示例：复杂的 LINQ 查询
发布日期： 2017年1月
适用于： Dynamics 365 (online),Dynamics 365 (on-premises),Dynamics CRM 2016,Dynamics CRM Online
此示例代码适用于 Microsoft Dynamics 365（在线或本地）。下载 Microsoft Dynamics CRM SDK 包。 可以在下载包的以下位置找到该示例：
SampleCode\CS\GeneralProgramming\Queries\LINQExamples.cs
要求
有关运行此 SDK 中提供的示例代码的要求的详细信息，请参阅使用示例和帮助程序代码。
演示
此示例显示的是如何通过 Microsoft Dynamics CRM 2015 和 Microsoft Dynamics CRM Online 2015 更新 使用 .NET 语言集成查询 (LINQ)。
示例
using System;
using System.ServiceModel;
using System.ServiceModel.Description;
// These namespaces are found in the Microsoft.Xrm.Sdk.dll assembly
// located in the SDK\bin folder of the SDK download.
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Messages;
// This namespace is found in Microsoft.Crm.Sdk.Proxy.dll assembly
// found in the SDK\bin folder.
using Microsoft.Crm.Sdk.Messages;
using System.Linq; //namespace for LINQ queries
namespace Microsoft.Crm.Sdk.Samples
{
/// <summary>
/// Demonstrates basic and complex LINQ queries used with Microsoft Dynamics CRM
/// </summary>
/// <remarks>
/// At run-time, you will be given the option to delete all the
/// database records created by this program.</remarks>
public class LINQ101
{
#region Class Level Members
private Guid _contactId1;
private Guid _contactId2;
private Guid _contactId3;
private Guid _contactId4;
private Guid _accountId1;
private Guid _accountId2;
private Guid _incidentId1;
private Guid _incidentId2;
private Guid _leadId;
private OrganizationServiceProxy _serviceProxy;
#endregion Class Level Members
#region How To Sample Code
/// <summary>
/// This method first connects to the Organization service. Afterwards,
/// a series of LINQ queries are performed.
/// </summary>
/// <param name="serverConfig">Contains server connection information.</param>
/// <param name="promptforDelete">When True, the user will be prompted to delete all
/// created entities.</param>
public void Run(ServerConnection.Configuration serverConfig, bool promptforDelete)
{
try
{
// Connect to the Organization service.
// The using statement assures that the service proxy will be properly disposed.
using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
{
// This statement is required to enable early-bound type support.
_serviceProxy.EnableProxyTypes();
CreateRequiredRecords();
#region EarlyBoundExamples
// *****************************************************************************************************************
// LNQ Simple where clause 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Accounts using one where clause");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_where1 = from a in svcContext.AccountSet
where a.Name.Contains("Contoso")
select a;
foreach (var a in query_where1)
{
System.Console.WriteLine(a.Name + " " + a.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Accounts using where clause 1
//======================================
//Contoso Ltd Redmond
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Simple where clause 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Accounts using two where clauses");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_where2 = from a in svcContext.AccountSet
where a.Name.Contains("Contoso")
where a.Address1_City == "Redmond"
select a;
foreach (var a in query_where2)
{
System.Console.WriteLine(a.Name + " " + a.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Accounts using where clause 2
//======================================
//Contoso Ltd Redmond
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Join and simple where clause query
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Account and Contact Info using where clause");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_where3 = from c in svcContext.ContactSet
join a in svcContext.AccountSet
on c.ContactId equals a.PrimaryContactId.Id
where a.Name.Contains("Contoso")
where c.LastName.Contains("Smith")
select new
{
account_name = a.Name,
contact_name = c.LastName
};
foreach (var c in query_where3)
{
System.Console.WriteLine("acct: " +
c.account_name +
"\t\t\t" +
"contact: " +
c.contact_name);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Account and Contact Info using where clause
//======================================
//acct: Contoso Ltd contact: Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the Distinct operator (returns only one of duplicate elements)
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using Distinct operator");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_distinct = (from c in svcContext.ContactSet
select c.LastName).Distinct();
foreach (var c in query_distinct)
{
System.Console.WriteLine(c);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using Distinct operator
//======================================
//Parker
//Smith
//Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Simple inner join 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact and Account Info Using join 1 ");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_join1 = from c in svcContext.ContactSet
join a in svcContext.AccountSet
on c.ContactId equals a.PrimaryContactId.Id
select new
{
c.FullName,
c.Address1_City,
a.Name,
a.Address1_Name
};
foreach (var c in query_join1)
{
System.Console.WriteLine("acct: " +
c.Name +
"\t\t\t" +
"contact: " +
c.FullName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact and Account Info Using join 1
//==================================
//acct: Contoso Ltd contact: Brian Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Multiple join 4
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact, Account, Lead Info using multiple join 4");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_join4 = from a in svcContext.AccountSet
join c in svcContext.ContactSet
on a.PrimaryContactId.Id equals c.ContactId
join l in svcContext.LeadSet
on a.OriginatingLeadId.Id equals l.LeadId
select new
{
contact_name = c.FullName,
account_name = a.Name,
lead_name = l.FullName
};
foreach (var c in query_join4)
{
System.Console.WriteLine(c.contact_name +
" " +
c.account_name +
" " +
c.lead_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact, Account, Lead Info using multiple join 4
//==================================
//Brian Smith Contoso Ltd Diogo Andrade
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Self join 5
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Account Info using self join 5");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_join5 = from a in svcContext.AccountSet
join a2 in svcContext.AccountSet
on a.ParentAccountId.Id equals a2.AccountId
select new
{
account_name = a.Name,
account_city = a.Address1_City
};
foreach (var c in query_join5)
{
System.Console.WriteLine(c.account_name + " " + c.account_city);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Account Info using self join 5
//==================================
//Contoso Ltd Redmond
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Double join 6
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using double join 6");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_join6 = from c in svcContext.ContactSet
join a in svcContext.AccountSet
on c.ContactId equals a.PrimaryContactId.Id
join a2 in svcContext.AccountSet
on a.ParentAccountId.Id equals a2.AccountId
select new
{
contact_name = c.FullName,
account_name = a.Name
};
foreach (var c in query_join6)
{
System.Console.WriteLine(c.contact_name + " " + c.account_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact Info using double join 6
//==================================
//Brian Smith Contoso Ltd
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Entity Fields join 7
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using entity field join 7");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var list_join = (from a in svcContext.AccountSet
join c in svcContext.ContactSet
on a.PrimaryContactId.Id equals c.ContactId
where a.Name == "Contoso Ltd" &&
a.Address1_Name == "Contoso Pharmaceuticals"
select a).ToList();
foreach (var c in list_join)
{
System.Console.WriteLine("Account " + list_join[0].Name
+ " and it's primary contact "
+ list_join[0].PrimaryContactId.Id);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
// Account Contoso Ltd and it's primary contact 918228af-04a1-e011-b1b7-00155dba3818
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Left join 8
// A left join is designed to return parents with and without children from two sources.
// There is a correlation between parent and child, but no child may actually exist.
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using left join 8");
System.Console.WriteLine("==================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_join8 = from a in svcContext.AccountSet
join c in svcContext.ContactSet
on a.PrimaryContactId.Id equals c.ContactId
into gr
from c_joined in gr.DefaultIfEmpty()
select new
{
contact_name = c_joined.FullName,
account_name = a.Name
};
foreach (var c in query_join8)
{
System.Console.WriteLine(c.contact_name + " " + c.account_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact Info using left join 8
//==================================
// Coho Winery
//Brian Smith Contoso Ltd
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the Equals operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using Equals operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_equals1 = from c in svcContext.ContactSet
where c.FirstName.Equals("Colin")
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_equals1)
{
System.Console.WriteLine(c.FirstName +
" " + c.LastName +
" " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using Equals operator 1
//======================================
//Colin Wilcox Redmond
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the Equals operator 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using Equals operator 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_equals2 = from c in svcContext.ContactSet
where c.FamilyStatusCode.Equals(3)
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_equals2)
{
System.Console.WriteLine(c.FirstName +
" " + c.LastName +
" " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using Equals operator 2
//======================================
//Brian Smith Bellevue
//Darren Parker Kirkland
//Ben Smith Kirkland
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the not equals operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using not equals operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_ne1 = from c in svcContext.ContactSet
where c.Address1_City != "Redmond"
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_ne1)
{
System.Console.WriteLine(c.FirstName + " " +
c.LastName + " " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using not equals operator 1
//======================================
//Brian Smith Bellevue
//Darren Parker Kirkland
//Ben Smith Kirkland
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the not equals operator 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using not equals operator 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_ne2 = from c in svcContext.ContactSet
where !c.FirstName.Equals("Colin")
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_ne2)
{
System.Console.WriteLine(c.FirstName + " " +
c.LastName + " " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using not equals operator 2
//======================================
//Brian Smith Bellevue
//Darren Parker Kirkland
//Ben Smith Kirkland
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LINQ Method-based LINQ query with where clause
// *****************************************************************************************************************
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var methodResults = svcContext.ContactSet
.Where(a => a.LastName == "Smith");
var methodResults2 = svcContext.ContactSet
.Where(a => a.LastName.StartsWith("Smi"));
Console.WriteLine();
Console.WriteLine("Method query using Lambda expression");
Console.WriteLine("---------------------------------------");
foreach (var a in methodResults)
{
Console.WriteLine("Name: " + a.FirstName + " " + a.LastName);
}
Console.WriteLine("---------------------------------------");
Console.WriteLine("Method query 2 using Lambda expression");
Console.WriteLine("---------------------------------------");
foreach (var a in methodResults2)
{
Console.WriteLine("Name: " + a.Attributes["firstname"] +
" " + a.Attributes["lastname"]);
}
}
Console.WriteLine("---------------------------------------");
// OUTPUT:
//Method query using Lambda expression
//---------------------------------------
//Name: Brian Smith
//Name: Ben Smith
//---------------------------------------
//Method query 2 using Lambda expression
//---------------------------------------
//Name: Brian Smith
//Name: Ben Smith
//---------------------------------------
// *****************************************************************************************************************
// LNQ Using the greater than operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using greater than operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_gt1 = from c in svcContext.ContactSet
where c.Anniversary > new DateTime(2010, 2, 5)
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_gt1)
{
System.Console.WriteLine(c.FirstName + " " +
c.LastName + " " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using greater than operator 1
//======================================
//Colin Wilcox Redmond
//Brian Smith Bellevue
//Darren Parker Kirkland
//Ben Smith Kirkland
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the greater than operator 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using greater than operator 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_gt2 = from c in svcContext.ContactSet
where c.CreditLimit.Value > 20000
select new
{
c.FirstName,
c.LastName,
c.Address1_City
};
foreach (var c in query_gt2)
{
System.Console.WriteLine(c.FirstName + " " +
c.LastName + " " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using greater than operator 2
//======================================
//Brian Smith Bellevue
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the ge and le operators 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the ge and le operators 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_gele1 = from c in svcContext.ContactSet
where c.CreditLimit.Value >= 200 &&
c.CreditLimit.Value <= 400
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_gele1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using the ge and le operators 1
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the contains operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the contains operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_contains1 = from c in svcContext.ContactSet
where c.Description.Contains("Alpine")
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_contains1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the contains operator 1
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the negated contains operator 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the negated contains operator 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_contains2 = from c in svcContext.ContactSet
where !c.Description.Contains("Coho")
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_contains2)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the negated contains operator 2
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the StartsWith operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the StartsWith operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_startswith1 = from c in svcContext.ContactSet
where c.FirstName.StartsWith("Bri")
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_startswith1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the StartsWith operator 1
//======================================
//Brian Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the endswith operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the EndsWith operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_endswith1 = from c in svcContext.ContactSet
where c.LastName.EndsWith("cox")
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_endswith1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the EndsWith operator 1
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the && and || operators 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the && and || operators 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_andor1 = from c in svcContext.ContactSet
where ((c.Address1_City == "Redmond" ||
c.Address1_City == "Bellevue") &&
(c.CreditLimit.Value != null &&
c.CreditLimit.Value >= 200))
select c;
foreach (var c in query_andor1)
{
System.Console.WriteLine(c.LastName + ", " + c.FirstName + " " +
c.Address1_City + " " + c.CreditLimit.Value);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using the && and || operators 1
//======================================
//Wilcox, Colin Redmond 300.0000
//Smith, Brian Bellevue 30000.0000
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the orderby operator 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the orderby operator 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_orderby1 = from c in svcContext.ContactSet
where !c.CreditLimit.Equals(null)
orderby c.CreditLimit descending
select new
{
limit = c.CreditLimit,
first = c.FirstName,
last = c.LastName
};
foreach (var c in query_orderby1)
{
System.Console.WriteLine(c.limit.Value + " " +
c.last + ", " + c.first);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the orderby operator 1
//======================================
//30000.0000 Smith, Brian
//12000.0000 Smith, Ben
//10000.0000 Parker, Darren
//300.0000 Wilcox, Colin
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the orderby operator 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the orderby operator 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_orderby2 = from c in svcContext.ContactSet
orderby c.LastName descending,
c.FirstName ascending
select new
{
first = c.FirstName,
last = c.LastName
};
foreach (var c in query_orderby2)
{
System.Console.WriteLine(c.last + ", " + c.first);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the orderby operator 2
//======================================
//Wilcox, Colin
//Smith, Ben
//Smith, Brian
//Parker, Darren
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the First and Single operators
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("==========================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
Contact firstcontact = svcContext.ContactSet.First();
Contact singlecontact = svcContext.ContactSet.Single(c => c.ContactId == _contactId1);
System.Console.WriteLine(firstcontact.LastName + ", " +
firstcontact.FirstName + " is the first contact");
System.Console.WriteLine("==========================");
System.Console.WriteLine(singlecontact.LastName + ", " +
singlecontact.FirstName + " is the single contact");
}
System.Console.WriteLine("======================================");
// OUTPUT:
//==========================
//Wilcox, Colin is the first contact
//==========================
//Wilcox, Colin is the single contact
//======================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Retrieving formatted values 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("Retrieving formatted values 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var list_retrieve1 = from c in svcContext.ContactSet
where c.ContactId == _contactId1
select new { StatusReason = c.FormattedValues["statuscode"] };
foreach (var c in list_retrieve1)
{
System.Console.WriteLine("Status: " + c.StatusReason);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//Retrieving formatted values 1
//======================================
//Status: Active
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the Skip and Take operators (non-paging)
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the Skip and Take operators");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_skip = (from c in svcContext.ContactSet
where c.LastName != "Parker"
orderby c.FirstName
select new
{
last = c.LastName,
first = c.FirstName
}).Skip(2).Take(2);
foreach (var c in query_skip)
{
System.Console.WriteLine(c.first + " " + c.last);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the Skip and Take operators
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the FirstOrDefault and SingleOrDefault operators
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("==========================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
Contact firstorcontact = svcContext.ContactSet.FirstOrDefault();
Contact singleorcontact = svcContext.ContactSet
.SingleOrDefault(c => c.ContactId == _contactId1);
System.Console.WriteLine(firstorcontact.FullName +
" is the first contact");
System.Console.WriteLine("==========================");
System.Console.WriteLine(singleorcontact.FullName +
" is the single contact");
}
System.Console.WriteLine("======================================");
// OUTPUT:
//==========================
//Colin Wilcox is the first contact
//==========================
//Colin Wilcox is the single contact
//======================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a self join with a condition on the linked entity
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a self join with a condition on the linked entity");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_joincond = from a1 in svcContext.AccountSet
join a2 in svcContext.AccountSet
on a1.ParentAccountId.Id equals a2.AccountId
where a2.AccountId == _accountId1
select new { Account = a1, Parent = a2 };
foreach (var a in query_joincond)
{
System.Console.WriteLine(a.Account.Name + " " + a.Parent.Name);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using a self join with a condition on the linked entity
//======================================
//Contoso Ltd Coho Winery
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a transformation in the where clause
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a transformation in the where clause");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_wheretrans = from c in svcContext.ContactSet
where c.ContactId == _contactId1 &&
c.Anniversary > DateTime.Parse("1/1/2010")
select new
{
c.FirstName,
c.LastName
};
foreach (var c in query_wheretrans)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using a transformation in the where clause
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a lookup value to order by
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Account Info using a lookup value to order by");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_orderbylookup = from a in svcContext.AccountSet
where a.Address1_Name == "Contoso Pharmaceuticals"
orderby a.PrimaryContactId
select new
{
a.Name,
a.Address1_City
};
foreach (var a in query_orderbylookup)
{
System.Console.WriteLine(a.Name + " " + a.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Account Info using a lookup value to order by
//======================================
//Contoso Ltd Redmond
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a a picklist to order by
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a picklist to order by");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_orderbypicklist = from c in svcContext.ContactSet
where c.LastName != "Parker" &&
c.AccountRoleCode != null
orderby c.AccountRoleCode, c.FirstName
select new
{
AccountRole = c.FormattedValues["accountrolecode"],
c.FirstName,
c.LastName
};
foreach (var c in query_orderbypicklist)
{
System.Console.WriteLine(c.AccountRole + " " +
c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using a picklist to order by
//======================================
//Decision Maker Colin Wilcox
//Employee Ben Smith
//Employee Brian Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a paging sort 1
// (Multi-column sort with extra condition)
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a paging sort 1");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_pagingsort1 = (from c in svcContext.ContactSet
where c.LastName != "Parker"
orderby c.LastName ascending,
c.FirstName descending
select new { c.FirstName, c.LastName })
.Skip(2).Take(2);
foreach (var c in query_pagingsort1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using a paging sort 1
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a paging sort 2
// (Page and sort where the column being sorted is different from the column being retrieved
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a paging sort 2");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_pagingsort2 = (from c in svcContext.ContactSet
where c.LastName != "Parker"
orderby c.FirstName descending
select new { c.FirstName }).Skip(2).Take(2);
foreach (var c in query_pagingsort2)
{
System.Console.WriteLine(c.FirstName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using a paging sort 2
//======================================
//Ben
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a paging sort 3
// (Creates only the first page)
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using a paging sort 3");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_pagingsort3 = (from c in svcContext.ContactSet
where c.LastName.StartsWith("W")
orderby c.MiddleName ascending,
c.FirstName descending
select new
{
c.FirstName,
c.MiddleName,
c.LastName
}).Take(10);
foreach (var c in query_pagingsort3)
{
System.Console.WriteLine(c.FirstName + " " +
c.MiddleName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using a paging sort 3
//======================================
//Colin Wilcox
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Retrieving related entity columns (for 1 to N relationships)
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact and Account Info by retrieving related entity columns");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_retrieve1 = from c in svcContext.ContactSet
join a in svcContext.AccountSet
on c.ContactId equals a.PrimaryContactId.Id
where c.ContactId != _contactId1
select new { Contact = c, Account = a };
foreach (var c in query_retrieve1)
{
System.Console.WriteLine("Acct: " + c.Account.Name +
"\t\t" + "Contact: " + c.Contact.FullName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact and Account Info by retrieving related entity columns
//======================================
//Acct: Contoso Ltd Contact: Brian Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using .Value to retrieve the value of an attribute
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using .Value to retrieve the value of an attribute");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_value = from c in svcContext.ContactSet
where c.ContactId != _contactId2
select new
{
ContactId = c.ContactId != null ?
c.ContactId.Value : Guid.Empty,
NumberOfChildren = c.NumberOfChildren != null ?
c.NumberOfChildren.Value : default(int),
CreditOnHold = c.CreditOnHold != null ?
c.CreditOnHold.Value : default(bool),
Anniversary = c.Anniversary != null ?
c.Anniversary.Value : default(DateTime)
};
foreach (var c in query_value)
{
System.Console.WriteLine(c.ContactId + " " + c.NumberOfChildren +
" " + c.CreditOnHold + " " + c.Anniversary);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using .Value to retrieve the value of an attribute
//======================================
//8f8228af-04a1-e011-b1b7-00155dba3818 1 False 3/5/2010 8:00:00 AM
//938228af-04a1-e011-b1b7-00155dba3818 2 False 10/5/2010 7:00:00 AM
//958228af-04a1-e011-b1b7-00155dba3818 2 True 7/5/2010 7:00:00 AM
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Multiple projections, new data type casting to different types
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using multiple projections");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_projections = from c in svcContext.ContactSet
where c.ContactId == _contactId1
&& c.NumberOfChildren != null &&
c.Anniversary.Value != null
select new
{
Contact = new Contact {
LastName = c.LastName,
NumberOfChildren = c.NumberOfChildren
},
NumberOfChildren = (double)c.NumberOfChildren,
Anniversary = c.Anniversary.Value.AddYears(1),
};
foreach (var c in query_projections)
{
System.Console.WriteLine(c.Contact.LastName + " " +
c.NumberOfChildren + " " + c.Anniversary);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using multiple projections
//======================================
//Wilcox 1 3/5/2011 8:00:00 AM
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the GetAttributeValue method
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using the GetAttributeValue method");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_getattrib = from c in svcContext.ContactSet
where c.GetAttributeValue<Guid>("contactid") != _contactId1
select new
{
ContactId = c.GetAttributeValue<Guid?>("contactid"),
NumberOfChildren = c.GetAttributeValue<int?>("numberofchildren"),
CreditOnHold = c.GetAttributeValue<bool?>("creditonhold"),
Anniversary = c.GetAttributeValue<DateTime?>("anniversary"),
};
foreach (var c in query_getattrib)
{
System.Console.WriteLine(c.ContactId + " " + c.NumberOfChildren +
" " + c.CreditOnHold + " " + c.Anniversary);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using the GetAttributeValue method
//======================================
//918228af-04a1-e011-b1b7-00155dba3818 2 False 4/5/2010 7:00:00 AM
//938228af-04a1-e011-b1b7-00155dba3818 2 False 10/5/2010 7:00:00 AM
//958228af-04a1-e011-b1b7-00155dba3818 2 True 7/5/2010 7:00:00 AM
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using math operations
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using math operations");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_math = from c in svcContext.ContactSet
where c.ContactId != _contactId2
&& c.Address1_Latitude != null &&
c.Address1_Longitude != null
select new
{
Round = Math.Round(c.Address1_Latitude.Value),
Floor = Math.Floor(c.Address1_Latitude.Value),
Ceiling = Math.Ceiling(c.Address1_Latitude.Value),
Abs = Math.Abs(c.Address1_Latitude.Value),
};
foreach (var c in query_math)
{
System.Console.WriteLine(c.Round + " " + c.Floor +
" " + c.Ceiling + " " + c.Abs);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using math operations
//======================================
//48 47 48 47.67417
//48 47 48 47.61056
//48 47 48 47.61056
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using multiple select and where clauses
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Incidents using multiple select and where clauses");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_multiselect = svcContext.IncidentSet
.Where(i => i.IncidentId != _incidentId1)
.Select(i => i.incident_customer_accounts)
.Where(a => a.AccountId != _accountId2)
.Select(a => a.account_primary_contact)
.OrderBy(c => c.FirstName)
.Select(c => c.ContactId);
foreach (var c in query_multiselect)
{
System.Console.WriteLine(c.GetValueOrDefault());
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Incidents using multiple select and where clauses
//======================================
//918228af-04a1-e011-b1b7-00155dba3818
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using SelectMany
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Account Info using SelectMany");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_selectmany = svcContext.ContactSet
.Where(c => c.ContactId != _contactId2)
.SelectMany(c => c.account_primary_contact)
.OrderBy(a => a.Name);
foreach (var c in query_selectmany)
{
System.Console.WriteLine(c.AccountId + " " + c.Name);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Account Info using SelectMany
//======================================
//9b8228af-04a1-e011-b1b7-00155dba3818 Contoso Ltd
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using String operations
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using String operations");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_string = from c in svcContext.ContactSet
where c.ContactId == _contactId2
select new
{
IndexOf = c.FirstName.IndexOf("contact"),
Insert = c.FirstName.Insert(1, "Insert"),
Remove = c.FirstName.Remove(1, 1),
Substring = c.FirstName.Substring(1, 1),
ToUpper = c.FirstName.ToUpper(),
ToLower = c.FirstName.ToLower(),
TrimStart = c.FirstName.TrimStart(),
TrimEnd = c.FirstName.TrimEnd(),
};
foreach (var c in query_string)
{
System.Console.WriteLine(c.IndexOf + "\n" + c.Insert + "\n" +
c.Remove + "\n" + c.Substring + "\n"
+ c.ToUpper + "\n" + c.ToLower +
"\n" + c.TrimStart + " " + c.TrimEnd);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using String operations
//======================================
//-1
//BInsertrian
//Bian
//r
//BRIAN
//brian
//Brian Brian
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using Two Where Clauses
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Account and Contact Info using two where clauses");
System.Console.WriteLine("======================================");
using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
var query_twowhere = from a in svcContext.AccountSet
join c in svcContext.ContactSet
on a.PrimaryContactId.Id equals c.ContactId
where c.LastName == "Smith" && c.CreditOnHold != null
where a.Name == "Contoso Ltd"
orderby a.Name
select a;
foreach (var c in query_twowhere)
{
System.Console.WriteLine(c.AccountId + " " + c.Name);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Account and Contact Info using two where clauses
//======================================
//9b8228af-04a1-e011-b1b7-00155dba3818 Contoso Ltd
//=====================================
System.Console.WriteLine();
#endregion EarlyBoundExamples
#region LateBoundExamples
// *****************************************************************************************************************
// LNQ Using late-bound entities, simple inner join 2
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact and Account Info using late-bound entities with join 2");
System.Console.WriteLine("==================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_join2 = from c in orgSvcContext.CreateQuery("contact")
join a in orgSvcContext.CreateQuery("account")
on c["contactid"] equals a["primarycontactid"]
select new
{
contact_name = c["fullname"],
account_name = a["name"]
};
foreach (var c in query_join2)
{
System.Console.WriteLine(c.contact_name + " " + c.account_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact and Account Info using late-bound entities with join 2
//==================================
//Brian Smith Contoso Ltd
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Alternative syntax simple inner join 3
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact and Account Info with alternative syntax join 3");
System.Console.WriteLine("==================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_join3 = from c in orgSvcContext.CreateQuery("contact")
join a in orgSvcContext.CreateQuery("account")
on c["contactid"] equals (Guid)((EntityReference)a["primarycontactid"]).Id
select new
{
contact_name = c["fullname"],
account_name = a["name"]
};
foreach (var c in query_join3)
{
System.Console.WriteLine(c.contact_name + " " + c.account_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact and Account Info with alternative syntax join 3
//==================================
//Brian Smith Contoso Ltd
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Late binding left join 9
// A left join is designed to return parents with and without children from two sources.
// There is a correlation between parent and child, but no child may actually exist.
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using late binding left join 9");
System.Console.WriteLine("==================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_join9 = from a in orgSvcContext.CreateQuery("account")
join c in orgSvcContext.CreateQuery("contact")
on a["primarycontactid"] equals c["contactid"] into gr
from c_joined in gr.DefaultIfEmpty()
select new
{
account_name = a.Attributes["name"]
};
foreach (var c in query_join9)
{
System.Console.WriteLine(c.account_name);
}
}
System.Console.WriteLine("==================================");
// OUTPUT:
//List of Contact Info using late binding left join 9
//==================================
//Coho Winery
//Contoso Ltd
//==================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using late binding and not equals operator 3
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using late binding and not equals operator 3");
System.Console.WriteLine("======================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_ne3 = from c in orgSvcContext.CreateQuery("contact")
where !c["address1_city"].Equals(null)
select new
{
FirstName = c["firstname"],
LastName = c["lastname"],
Address1_City = c["address1_city"]
};
foreach (var c in query_ne3)
{
System.Console.WriteLine(c.FirstName + " " +
c.LastName + " " + c.Address1_City);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
// List of Contact Info using late binding and not equals operator 3
//======================================
//Colin Wilcox Redmond
//Brian Smith Bellevue
//Darren Parker Kirkland
//Ben Smith Kirkland
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using late binding with Contains operator 3
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using late binding with Contains operator 3");
System.Console.WriteLine("======================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_contains3 = from c in orgSvcContext.CreateQuery("contact")
where ((string)c["description"]).Contains("Coho")
select new
{
firstname = c.Attributes["firstname"],
lastname = c.Attributes["lastname"]
};
foreach (var c in query_contains3)
{
System.Console.WriteLine(c.firstname + " " + c.lastname);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using late binding with Contains operator 3
//======================================
//Brian Smith
//Darren Parker
//Ben Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using the GetAttributeValue (late binding) method 1
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Contact Info using late binding and the GetAttributeValue method 2");
System.Console.WriteLine("======================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var list_getattrib1 = (from c in orgSvcContext.CreateQuery("contact")
where c.GetAttributeValue<Guid?>("contactid") != _contactId1
select new {
FirstName = c.GetAttributeValue<string>("firstname"),
LastName = c.GetAttributeValue<string>("lastname")
}).ToList();
foreach (var c in list_getattrib1)
{
System.Console.WriteLine(c.FirstName + " " + c.LastName);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Contact Info using late binding and the GetAttributeValue method 2
//======================================
//Brian Smith
//Darren Parker
//Ben Smith
//=====================================
System.Console.WriteLine();
// *****************************************************************************************************************
// LNQ Using a late binding join
// *****************************************************************************************************************
System.Console.WriteLine();
System.Console.WriteLine("List of Info using a late binding join");
System.Console.WriteLine("======================================");
using (OrganizationServiceContext orgSvcContext = new OrganizationServiceContext(_serviceProxy))
{
var query_dejoin = from c in orgSvcContext.CreateQuery("contact")
join a in orgSvcContext.CreateQuery("account")
on c["contactid"] equals a["primarycontactid"]
join l in orgSvcContext.CreateQuery("lead")
on a["originatingleadid"] equals l["leadid"]
where (string)c["lastname"] != "Parker"
select new { Contact = c, Account = a, Lead = l };
foreach (var c in query_dejoin)
{
System.Console.WriteLine(c.Account.Attributes["name"] + " " +
c.Contact.Attributes["fullname"] + " " + c.Lead.Attributes["leadid"]);
}
}
System.Console.WriteLine("=====================================");
// OUTPUT:
//List of Info using a late binding join
//======================================
//Contoso Ltd Brian Smith 9a8228af-04a1-e011-b1b7-00155dba3818
//=====================================
System.Console.WriteLine();
#endregion LateBoundExamples
DeleteRequiredRecords(promptforDelete);
}
}
// Catch any service fault exceptions that Microsoft Dynamics CRM throws.
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>)
{
// You can handle an exception here or pass it back to the calling method.
throw;
}
}
/// <summary>
/// Creates any entity records that this sample requires.
/// </summary>
public void CreateRequiredRecords()
{
Contact contact1 = new Contact
{
FirstName = "Colin",
LastName = "Wilcox",
Address1_City = "Redmond",
Address1_StateOrProvince = "WA",
Address1_PostalCode = "98052",
Anniversary = new DateTime(2010, 3, 5),
CreditLimit = new Money(300),
Description = "Alpine Ski House",
StatusCode = new OptionSetValue(1),
AccountRoleCode = new OptionSetValue(1),
NumberOfChildren = 1,
Address1_Latitude = 47.6741667,
Address1_Longitude = -122.1202778,
CreditOnHold = false
};
_contactId1 = _serviceProxy.Create(contact1);
Console.Write("Created a sample contact 1: {0}, ", contact1.FirstName + " " + contact1.LastName);
Contact contact2 = new Contact
{
FirstName = "Brian",
LastName = "Smith",
Address1_City = "Bellevue",
FamilyStatusCode = new OptionSetValue(3),
Address1_StateOrProvince = "WA",
Address1_PostalCode = "98008",
Anniversary = new DateTime(2010, 4, 5),
CreditLimit = new Money(30000),
Description = "Coho Winery",
StatusCode = new OptionSetValue(1),
AccountRoleCode = new OptionSetValue(2),
NumberOfChildren = 2,
Address1_Latitude = 47.6105556,
Address1_Longitude = -122.1994444,
CreditOnHold = false
};
_contactId2 = _serviceProxy.Create(contact2);
Console.Write("Created a sample contact 2: {0}, ", contact2.FirstName + " " + contact2.LastName);
Contact contact3 = new Contact
{
FirstName = "Darren",
LastName = "Parker",
Address1_City = "Kirkland",
FamilyStatusCode = new OptionSetValue(3),
Address1_StateOrProvince = "WA",
Address1_PostalCode = "98033",
Anniversary = new DateTime(2010, 10, 5),
CreditLimit = new Money(10000),
Description = "Coho Winery",
StatusCode = new OptionSetValue(1),
AccountRoleCode = new OptionSetValue(2),
NumberOfChildren = 2,
Address1_Latitude = 47.6105556,
Address1_Longitude = -122.1994444,
CreditOnHold = false
};
_contactId3 = _serviceProxy.Create(contact3);
Console.Write("Created a sample contact 3: {0}, ", contact3.FirstName + " " + contact3.LastName);
Contact contact4 = new Contact
{
FirstName = "Ben",
LastName = "Smith",
Address1_City = "Kirkland",
FamilyStatusCode = new OptionSetValue(3),
Address1_StateOrProvince = "WA",
Address1_PostalCode = "98033",
Anniversary = new DateTime(2010, 7, 5),
CreditLimit = new Money(12000),
Description = "Coho Winery",
StatusCode = new OptionSetValue(1),
AccountRoleCode = new OptionSetValue(2),
NumberOfChildren = 2,
Address1_Latitude = 47.6105556,
Address1_Longitude = -122.1994444,
CreditOnHold = true
};
_contactId4 = _serviceProxy.Create(contact4);
Console.Write("Created a sample contact 4: {0}, ", contact4.FirstName + " " + contact4.LastName);
Incident incident1 = new Incident
{
Title = "Test Case 1",
PriorityCode = new OptionSetValue(1), // 1 = High
CaseOriginCode = new OptionSetValue(1), // 1 = Phone
CaseTypeCode = new OptionSetValue(2), // 2 = Problem
Description = "Description for Test Case 1.",
FollowupBy = DateTime.Now.AddHours(3.0), // follow-up in 3 hours
CustomerId = new EntityReference(Contact.EntityLogicalName, _contactId2)
};
_incidentId1 = _serviceProxy.Create(incident1);
Console.Write("Created a sample incident 1: {0}, ", incident1.Title);
Relationship relationship1 = new Relationship("incident_customer_contacts");
EntityReferenceCollection relatedEntities1 = new EntityReferenceCollection();
relatedEntities1.Add(new EntityReference(Contact.EntityLogicalName, _contactId1));
_serviceProxy.Associate(Incident.EntityLogicalName, _incidentId1, relationship1, relatedEntities1);
Console.Write("Added relationship between incident 1 and contact 1, ");
Account account1 = new Account
{
Name = "Coho Winery",
Address1_Name = "Coho Vineyard & Winery",
Address1_City = "Redmond"
};
_accountId1 = _serviceProxy.Create(account1);
Console.Write("Created a sample account 1: {0}, ", account1.Name);
Incident incident2 = new Incident
{
Title = "Test Case 2",
PriorityCode = new OptionSetValue(1), // 1 = High
CaseOriginCode = new OptionSetValue(1), // 1 = Phone
CaseTypeCode = new OptionSetValue(2), // 2 = Problem
Description = "Description for Sample Case 2.",
FollowupBy = DateTime.Now.AddHours(3.0), // follow-up in 3 hours
CustomerId = new EntityReference(Contact.EntityLogicalName, _contactId1)
};
_incidentId2 = _serviceProxy.Create(incident2);
Console.Write("Created a sample incident 2: {0}, ", incident2.Title);
Relationship relationship2 = new Relationship("incident_customer_accounts");
EntityReferenceCollection relatedEntities2 = new EntityReferenceCollection();
relatedEntities2.Add(new EntityReference(Account.EntityLogicalName, _accountId1));
_serviceProxy.Associate(Incident.EntityLogicalName, _incidentId2, relationship2, relatedEntities2);
Console.Write("Added relationship between incident 2 and account 1, ");
Lead lead = new Lead()
{
FirstName = "Diogo",
LastName = "Andrade"
};
_leadId = _serviceProxy.Create(lead);
Console.Write("Created a sample Lead: {0} ", lead.FirstName + " " + lead.LastName);
Account account2 = new Account
{
Name = "Contoso Ltd",
ParentAccountId = new EntityReference(Account.EntityLogicalName, _accountId1),
Address1_Name = "Contoso Pharmaceuticals",
Address1_City = "Redmond",
OriginatingLeadId = new EntityReference(Lead.EntityLogicalName, _leadId)
};
_accountId2 = _serviceProxy.Create(account2);
Console.Write("Created a sample account 2: {0}, ", account2.Name);
Relationship relationship3 = new Relationship("account_primary_contact");
EntityReferenceCollection relatedEntities3 = new EntityReferenceCollection();
relatedEntities3.Add(new EntityReference(Account.EntityLogicalName, _accountId2));
_serviceProxy.Associate(Contact.EntityLogicalName, _contactId2, relationship3, relatedEntities3);
Console.WriteLine("Added relationship between account 2 and contact 2.");
}
/// <summary>
/// Deletes any entity records that were created for this sample.
/// <param name="prompt">Indicates whether to prompt the user
/// to delete the records created in this sample.</param>
/// </summary>
public void DeleteRequiredRecords(bool prompt)
{
// The three system users that were created by this sample will continue to
// exist on your system because system users cannot be deleted in Microsoft
// Dynamics CRM. They can only be enabled or disabled.
bool toBeDeleted = true;
if (prompt)
{
// Ask the user if the created entities should be deleted.
Console.Write("\nDo you want these entity records deleted? (y/n) [y]: ");
String answer = Console.ReadLine();
if (answer.StartsWith("y") ||
answer.StartsWith("Y") ||
answer == String.Empty)
{
toBeDeleted = true;
}
else
{
toBeDeleted = false;
}
}
if (toBeDeleted)
{
// Delete all records created in this sample.
_serviceProxy.Delete(Account.EntityLogicalName, _accountId2);
_serviceProxy.Delete(Incident.EntityLogicalName, _incidentId2);
_serviceProxy.Delete(Account.EntityLogicalName, _accountId1);
_serviceProxy.Delete(Lead.EntityLogicalName, _leadId);
_serviceProxy.Delete(Incident.EntityLogicalName, _incidentId1);
_serviceProxy.Delete(Contact.EntityLogicalName, _contactId4);
_serviceProxy.Delete(Contact.EntityLogicalName, _contactId3);
_serviceProxy.Delete(Contact.EntityLogicalName, _contactId2);
_serviceProxy.Delete(Contact.EntityLogicalName, _contactId1);
Console.WriteLine("Entity record(s) have been deleted.");
}
}
#endregion How To Sample Code
#region Main method
/// <summary>
/// Standard Main() method used by most SDK samples.
/// </summary>
/// <param name="args"></param>
static public void Main(string[] args)
{
try
{
// Obtain the target organization's Web address and client logon
// credentials from the user.
ServerConnection serverConnect = new ServerConnection();
ServerConnection.Configuration config = serverConnect.GetServerConfiguration();
LINQ101 app = new LINQ101();
app.Run(config, true);
}
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Timestamp: {0}", ex.Detail.Timestamp);
Console.WriteLine("Code: {0}", ex.Detail.ErrorCode);
Console.WriteLine("Message: {0}", ex.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", ex.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
catch (System.TimeoutException ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Message: {0}", ex.Message);
Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
Console.WriteLine("Inner Fault: {0}",
null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
}
catch (System.Exception ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine(ex.Message);
// Display the details of the inner exception.
if (ex.InnerException != null)
{
Console.WriteLine(ex.InnerException.Message);
FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe = ex.InnerException
as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
if (fe != null)
{
Console.WriteLine("Timestamp: {0}", fe.Detail.Timestamp);
Console.WriteLine("Code: {0}", fe.Detail.ErrorCode);
Console.WriteLine("Message: {0}", fe.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", fe.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
}
}
// Additonal exceptions to catch: SecurityTokenValidationException, ExpiredSecurityTokenException,
// SecurityAccessDeniedException, MessageSecurityException, and SecurityNegotiationException.
finally
{
Console.WriteLine("Press <Enter> to exit.");
Console.ReadLine();
}
}
#endregion Main method
}
}
另请参阅
OrganizationServiceContext
使用 LINQ（.NET 语言集成查询）构建查询
示例：使用 LINQ 检索多个条件运算符
Microsoft Dynamics 365
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