TaskInfos.Item[Object] 属性

定义

从集合中检索 TaskInfo

public:
 property Microsoft::SqlServer::Dts::Runtime::TaskInfo ^ default[System::Object ^] { Microsoft::SqlServer::Dts::Runtime::TaskInfo ^ get(System::Object ^ index); };
public Microsoft.SqlServer.Dts.Runtime.TaskInfo this[object index] { get; }
member this.Item(obj) : Microsoft.SqlServer.Dts.Runtime.TaskInfo
Default Public ReadOnly Property Item(index As Object) As TaskInfo

参数

index
Object

要从集合中检索的 TaskInfo 的名称、ID 或索引。

属性值

TaskInfo

TaskInfo 对象。

示例

下面的代码示例使用两个方法从集合中检索项。 第一种方法使用 tInfos[0] 语法来检索位于集合第一个位置的整个对象,并将其放在对象中 tInfo 。 你现在可以像平常一样检索对象的所有属性 tInfo 。 第二个方法演示如何检索集合中第一个对象的特定属性。

using System;  
using System.Collections.Generic;  
using System.Text;  
using Microsoft.SqlServer.Dts.Runtime;  

namespace TaskInfos_Item  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            Application app = new Application();  
            TaskInfos tInfos = app.TaskInfos;  

            //Using the Item method syntax of [x], obtain the first   
            //entry.  
            TaskInfo tInfo = tInfos[0];  
            String nameOfFirstItem = tInfos[0].Name;  
           //This could also be done using the Name property, as  
           //demonstrated by this next line of commented code.  
           //TaskInfo tInfo = tInfos["Execute Package Task"];  
           //You can also use the ID property.  
           // TaskInfo tInfo = tInfos["{8FE4A9F8-D077-436B-9B00-C1EEAEFAFE55}"];  

            //Print the name of the task object located at position [0].  
            Console.WriteLine("The task ID of the first provider is: {0}", tInfo.ID);  
            Console.WriteLine("The Name of the first task is: {0}", nameOfFirstItem);  
        }  
    }  
}  
Imports System  
Imports System.Collections.Generic  
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime  

Namespace TaskInfos_Item  
    Class Program  
        Shared  Sub Main(ByVal args() As String)  
            Dim app As Application =  New Application()   
            Dim tInfos As TaskInfos =  app.TaskInfos   

            'Using the Item method syntax of [x], obtain the first   
            'entry.  
            Dim tInfo As TaskInfo =  tInfos(0)   
            Dim nameOfFirstItem As String =  tInfos(0).Name   
           'This could also be done using the Name property, as  
           'demonstrated by this next line of commented code.  
           'TaskInfo tInfo = tInfos["Execute Package Task"];  
           'You can also use the ID property.  
           ' TaskInfo tInfo = tInfos["{8FE4A9F8-D077-436B-9B00-C1EEAEFAFE55}"];  

            'Print the name of the task object located at position [0].  
            Console.WriteLine("The task ID of the first provider is: {0}", tInfo.ID)  
            Console.WriteLine("The Name of the first task is: {0}", nameOfFirstItem)  
        End Sub  
    End Class  
End Namespace  

示例输出:

第一个提供程序的任务 ID 为: {8FE4A9F8-D077-436B-9B00-C1EEAEFAFE55}

第一个任务的名称是:执行包任务

注解

如果对方法的调用 Contains 返回 true ,则可以使用语法访问集合中的指定元素 TaskInfos[index] 。 但是,如果对方法的调用 Contains 返回 false ,则此属性将引发异常。 在 C# 中,此属性为 TaskInfos 类的索引器。

适用于