ObjectDataSourceStatusEventArgs 類別

定義

提供 Selected 控制項之 InsertedUpdatedDeletedObjectDataSource 事件的資料。Provides data for the Selected, Inserted, Updated, and Deleted events of the ObjectDataSource control.

public ref class ObjectDataSourceStatusEventArgs : EventArgs
public class ObjectDataSourceStatusEventArgs : EventArgs
type ObjectDataSourceStatusEventArgs = class
    inherit EventArgs
Public Class ObjectDataSourceStatusEventArgs
Inherits EventArgs
繼承
ObjectDataSourceStatusEventArgs

範例

本節包含兩個程式碼範例。This section contains two code examples. 第一個程式碼範例示範如何使用 ObjectDataSource 具有商務物件的控制項,以及用 GridView 來刪除資料的控制項。The first code example demonstrates how to use an ObjectDataSource control with a business object and a GridView control to delete data. 第二個程式碼範例提供第一個程式碼範例所使用的範例仲介層商務物件。The second code example provides an example middle-tier business object that the first code example uses.

下列程式碼範例示範如何使用 ObjectDataSource 具有商務物件的控制項,以及用 GridView 來刪除資料的控制項。The following code example demonstrates how to use an ObjectDataSource control with a business object and a GridView control to delete data. GridView一開始會顯示一組所有員工,使用屬性所指定的方法來抓取 SelectMethod 物件中的資料 EmployeeLogicThe GridView initially displays a set of all employees, using the method that is specified by the SelectMethod property to retrieve the data from the EmployeeLogic object. 因為 AutoGenerateDeleteButton 屬性設定為,所以 true GridView 控制項會自動顯示 [ 刪除 ] 按鈕。Because the AutoGenerateDeleteButton property is set to true, the GridView control automatically displays a Delete button.

如果您按一下 [ 刪除 ] 按鈕, Delete 就會使用屬性所指定的方法 DeleteMethod 和集合中指定的任何參數來執行動作 DeleteParametersIf you click the Delete button, the Delete action is performed using the method that is specified by the DeleteMethod property and any parameters that are specified in the DeleteParameters collection. 在此程式碼範例中,會在 DeleteParameters 對應至員工識別碼的集合中指定一個參數。In this code example, one parameter is specified in the DeleteParameters collection that corresponds to the employee ID. 這是因為雖然識別碼會以物件的形式包含在 Columns 集合中 BoundField ,但它會以字串形式傳遞給 ObjectDataSource 控制項。This is because although the ID is included in the Columns collection as a BoundField object, it will be passed as a string to the ObjectDataSource control. 藉由將它明確地新增至 DeleteParameters 集合 Type ,並將屬性設定為 Int32 值,它會 ObjectDataSource 以整數的形式傳遞給方法,而不是字串。By adding it explicitly to the DeleteParameters collection with a Type property set to the Int32 value, it will pass correctly by the ObjectDataSource to the method as an integer, rather than as string.

在此程式碼範例中,也會執行一些前置處理和後置處理步驟。In this code example, some preprocessing and post-processing steps are also performed. NorthwindEmployeeDeleting委派會在 Deleting 執行動作之前呼叫來處理事件 Delete ,並 NorthwindEmployeeDeleted 呼叫委派來處理 Deleted 動作完成後的事件 Delete ,以處理可能發生的任何例外狀況。The NorthwindEmployeeDeleting delegate is called to handle the Deleting event before the Delete action is performed, and the NorthwindEmployeeDeleted delegate is called to handle the Deleted event after the Delete action has completed, to handle any exceptions that might have occurred. NorthwindEmployeeDeleted委派會存取使用物件之商務物件所擲回的可能例外狀況 ObjectDataSourceStatusEventArgsThe NorthwindEmployeeDeleted delegate accesses possible exceptions that are thrown by the business object that is using the ObjectDataSourceStatusEventArgs object. 在此範例中,如果擲回,則會 NorthwindDataException 由此委派來處理。In this example, if a NorthwindDataException is thrown, it is handled by this delegate.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS" Assembly="Samples.AspNet.CS" %>
<%@ Import namespace="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
private void NorthwindEmployeeDeleting(object source, ObjectDataSourceMethodEventArgs e)
{
  // The GridView passes the ID of the employee
  // to be deleted. However, the buisiness object, EmployeeLogic,
  // requires a NorthwindEmployee parameter, named "ne". Create
  // it now and add it to the parameters collection.
  IDictionary paramsFromPage = e.InputParameters;
  if (paramsFromPage["EmpID"] != null) {
    NorthwindEmployee ne
      = new NorthwindEmployee( Int32.Parse(paramsFromPage["EmpID"].ToString()));
    // Remove the old EmpID parameter.
    paramsFromPage.Clear();
    paramsFromPage.Add("ne", ne);
  }
}

private void NorthwindEmployeeDeleted(object source, ObjectDataSourceStatusEventArgs e)
{
  // Handle the Exception if it is a NorthwindDataException
  if (e.Exception != null)
  {

    // Handle the specific exception type. The ObjectDataSource wraps
    // any Exceptions in a TargetInvokationException wrapper, so
    // check the InnerException property for expected Exception types.
    if (e.Exception.InnerException is NorthwindDataException)
    {
      Label1.Text = e.Exception.InnerException.Message;
      // Because the exception is handled, there is
      // no reason to throw it.
      e.ExceptionHandled = true;
    }
  }
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ObjectDataSource - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">

        <asp:gridview
          id="GridView1"
          runat="server"
          datasourceid="ObjectDataSource1"
          autogeneratedeletebutton="true"
          autogeneratecolumns="false"
          datakeynames="EmpID">
          <columns>
            <asp:boundfield headertext="EmpID" datafield="EmpID" />
            <asp:boundfield headertext="First Name" datafield="FirstName" />
            <asp:boundfield headertext="Last Name" datafield="LastName" />
          </columns>
        </asp:gridview>

        <asp:objectdatasource
          id="ObjectDataSource1"
          runat="server"
          selectmethod="GetAllEmployees"
          deletemethod="DeleteEmployee"
          ondeleting="NorthwindEmployeeDeleting"
          ondeleted="NorthwindEmployeeDeleted"
          typename="Samples.AspNet.CS.EmployeeLogic">
          <deleteparameters>
            <asp:parameter name="EmpID" type="Int32" />
          </deleteparameters>
        </asp:objectdatasource>

        <asp:label id="Label1" runat="server" />

    </form>
  </body>
</html>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB" Assembly="Samples.AspNet.VB" %>
<%@ Import namespace="Samples.AspNet.VB" %>
<%@ Page language="vb" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
' Called before a Delete operation.
    Private Sub NorthwindEmployeeDeleting(ByVal source As Object, ByVal e As ObjectDataSourceMethodEventArgs)

        ' The GridView passes the ID of the employee
        ' to be deleted. However, the business object, EmployeeLogic,
        ' requires a NorthwindEmployee parameter, named "ne". Create
        ' it now and add it to the parameters collection.
        Dim paramsFromPage As IDictionary = e.InputParameters
  
        If Not paramsFromPage("EmpID") Is Nothing Then
    
            Dim ne As New NorthwindEmployee(paramsFromPage("EmpID").ToString())
            ' Remove the old EmpID parameter.
            paramsFromPage.Clear()
            paramsFromPage.Add("ne", ne)
    
    
        End If
    End Sub ' NorthwindEmployeeDeleting

    ' Called after a Delete operation.
    Private Sub NorthwindEmployeeDeleted(ByVal source As Object, ByVal e As ObjectDataSourceStatusEventArgs)
        ' Handle the Exception if it is a NorthwindDataException.
        If Not e.Exception Is Nothing Then

            ' Handle the specific exception type. The ObjectDataSource wraps
            ' any Exceptions in a TargetInvokationException wrapper, so
            ' check the InnerException property for the expected Exception types.
            If e.Exception.InnerException.GetType().Equals(GetType(NorthwindDataException)) Then

                Label1.Text = e.Exception.InnerException.Message
                ' Because the exception is handled, there is
                ' no reason to throw it.
                e.ExceptionHandled = True
      
            End If
        End If
    End Sub ' NorthwindEmployeeDeleted
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ObjectDataSource - VB Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">

        <asp:gridview
          id="GridView1"
          runat="server"
          datasourceid="ObjectDataSource1"
          autogeneratedeletebutton="true"
          autogeneratecolumns="false"
          datakeynames="EmpID">
          <columns>
            <asp:boundfield headertext="EmpID" datafield="EmpID" />
            <asp:boundfield headertext="First Name" datafield="FirstName" />
            <asp:boundfield headertext="Last Name" datafield="LastName" />
          </columns>
        </asp:gridview>

        <asp:objectdatasource
          id="ObjectDataSource1"
          runat="server"
          selectmethod="GetAllEmployees"
          deletemethod="DeleteEmployee"
          ondeleting="NorthwindEmployeeDeleting"
          ondeleted="NorthwindEmployeeDeleted"
          typename="Samples.AspNet.VB.EmployeeLogic">
          <deleteparameters>
            <asp:parameter name="EmpID" type="Int32" />
          </deleteparameters>
        </asp:objectdatasource>

        <asp:label id="Label1" runat="server" />

    </form>
  </body>
</html>

下列程式碼範例會提供前述程式碼範例所使用的範例中介層商務物件。The following code example provides an example middle-tier business object that the preceding code example uses. 下列清單描述程式碼範例中定義的兩個主要類別:The following list describes the two major classes that are defined in the code example:

  • EmployeeLogic類別是不會維護狀態並封裝商務邏輯的類別。The EmployeeLogic class is a class that does not maintain state and encapsulates business logic.

  • NorthwindEmployee類別是一個模型類別,其中只包含從資料層載入和保存資料所需的基本功能。The NorthwindEmployee class is a model class that contains only the basic functionality that is required to load and persist data from the data tier.

此外,也 NorthwindDataException 會提供類別以方便您使用。In addition, a NorthwindDataException class is provided as a convenience.

這組範例類別會使用 Northwind 商貿資料庫,這是 Microsoft SQL Server 和 Microsoft Access 提供的範例資料庫。This set of example classes uses the Northwind Traders database, which is an example database that is available with Microsoft SQL Server and Microsoft Access. 如需完整的實用範例,您必須將此程式碼編譯為程式庫,然後從 ASP 頁面使用這些類別。For a complete working example, you must compile this code as a library, and then use these classes from an ASP page. 先前範例中提供的 ASP 頁面已設定為使用此類別庫。The ASP page that is provided in the preceding example is configured to work with this class library. UpdateEmployeeInfo方法並未完全實作為,因此當您嘗試使用此範例時,不會將資料插入 Northwind 商貿資料庫中。The UpdateEmployeeInfo method is not completely implemented, so you will not insert data into the Northwind Traders database when you experiment with this example.

namespace Samples.AspNet.CS {

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI;
using System.Web.UI.WebControls;
  //
  // EmployeeLogic is a stateless business object that encapsulates
  // the operations you can perform on a NorthwindEmployee object.
  //
  public class EmployeeLogic {

    // Returns a collection of NorthwindEmployee objects.
    public static ICollection GetAllEmployees () {
      ArrayList al = new ArrayList();

      // Use the SqlDataSource class to wrap the
      // ADO.NET code required to query the database.
      ConnectionStringSettings cts = ConfigurationManager.ConnectionStrings["NorthwindConnection"];

      SqlDataSource sds
        = new SqlDataSource(cts.ConnectionString,
                            "SELECT EmployeeID FROM Employees");
      try {
        IEnumerable IDs = sds.Select(DataSourceSelectArguments.Empty);

        // Iterate through the Enumeration and create a
        // NorthwindEmployee object for each ID.
        IEnumerator enumerator = IDs.GetEnumerator();
        while (enumerator.MoveNext()) {
          // The IEnumerable contains DataRowView objects.
          DataRowView row = enumerator.Current as DataRowView;
          string id = row["EmployeeID"].ToString();
          NorthwindEmployee nwe = new NorthwindEmployee(id);
          // Add the NorthwindEmployee object to the collection.
          al.Add(nwe);
        }
      }
      finally {
        // If anything strange happens, clean up.
        sds.Dispose();
      }

      return al;
    }

    public static NorthwindEmployee GetEmployee(object anID) {
      return new NorthwindEmployee(anID);
    }

    public static void DeleteEmployee(NorthwindEmployee ne) {
      bool retval = ne.Delete();
      if (! retval) { throw new NorthwindDataException("Employee delete failed."); }
      // Delete the object in memory.
      ne = null;
    }

    public static void DeleteEmployeeByID(int anID) {
        NorthwindEmployee tempEmp = new NorthwindEmployee(anID);
        DeleteEmployee(tempEmp);
    }
  }

  public class NorthwindEmployee {

    public NorthwindEmployee () {
      ID = DBNull.Value;
      lastName = "";
      firstName = "";
    }

    public NorthwindEmployee (object anID) {
      this.ID = anID;

      ConnectionStringSettings cts = ConfigurationManager.ConnectionStrings["NorthwindConnection"];

      SqlConnection conn = new SqlConnection (cts.ConnectionString);
      SqlCommand sc =
        new SqlCommand(" SELECT FirstName,LastName " +
                       " FROM Employees " +
                       " WHERE EmployeeID = @empId",
                       conn);
      // Add the employee ID parameter and set its value.
      sc.Parameters.Add(new SqlParameter("@empId",SqlDbType.Int)).Value = Int32.Parse(anID.ToString());
      SqlDataReader sdr = null;

      try {
        conn.Open();
        sdr = sc.ExecuteReader();

        // This is not a while loop. It only loops once.
        if (sdr != null && sdr.Read()) {
          // The IEnumerable contains DataRowView objects.
          this.firstName        = sdr["FirstName"].ToString();
          this.lastName         = sdr["LastName"].ToString();
        }
        else {
          throw new NorthwindDataException("Data not loaded for employee id.");
        }
      }
      finally {
        try {
          if (sdr != null) sdr.Close();
          conn.Close();
        }
        catch (SqlException) {
          // Log an event in the Application Event Log.
          throw;
        }
      }
    }

    private object ID;
    public object EmpID {
      get { return ID; }
    }

    private string lastName;
    public string LastName {
      get { return lastName; }
      set { lastName = value; }
    }

    private string firstName;
    public string FirstName {
      get { return firstName; }
      set { firstName = value;  }
    }
    public bool Delete () {
      if (ID.Equals(DBNull.Value)) {
        // The Employee object is not persisted.
        return true;
      }
      else {
        // The Employee object is persisted.
        // Use the SqlDataSource control as a convenient wrapper for
        // the ADO.NET code needed to delete a record from the database.
        ConnectionStringSettings cts = ConfigurationManager.ConnectionStrings["NorthwindConnection"];
        SqlDataSource sds = new SqlDataSource();

        try {
          sds.ConnectionString = cts.ConnectionString;
          sds.DeleteParameters.Add(new Parameter("empID", TypeCode.Int32, this.ID.ToString()));
          sds.DeleteCommand = "DELETE FROM [Order Details] " + 
              "WHERE OrderID IN (SELECT OrderID FROM Orders WHERE EmployeeID=@empID)";
          sds.Delete();
          sds.DeleteCommand = "DELETE FROM Orders WHERE EmployeeID=@empID";
          sds.Delete();
          sds.DeleteCommand = "DELETE FROM EmployeeTerritories WHERE EmployeeID=@empID";
          sds.Delete();
          sds.DeleteCommand = "DELETE FROM Employees WHERE EmployeeID=@empID";
          sds.Delete();
          return true;
        }
        finally {
          // Clean up resources.
          sds.Dispose();
        }
      }
    }
  }

  public class NorthwindDataException: Exception {
    public NorthwindDataException(string msg) : base (msg) { }
  }
}
Imports System.Collections
Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI
Imports System.Web.UI.WebControls

Namespace Samples.AspNet.VB
'
' EmployeeLogic is a stateless business object that encapsulates
' the operations you can perform on a NorthwindEmployee object.
Public Class EmployeeLogic

   ' Return a collection of NorthwindEmployee objects.
   Public Shared Function GetAllEmployees() As ICollection
      Dim al As New ArrayList()

      ' Use the SqlDataSource class to wrap the
      ' ADO.NET code required to query the database.
      Dim cts As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("NorthwindConnection")
      Dim sds As New SqlDataSource(cts.ConnectionString, _
                                  "SELECT EmployeeID FROM Employees")
      Try
         Dim IDs As IEnumerable = sds.Select(DataSourceSelectArguments.Empty)

         ' Iterate through the Enumeration and create a
         ' NorthwindEmployee object for each ID.
         Dim enumerator As IEnumerator = IDs.GetEnumerator()
         While enumerator.MoveNext()
            ' The IEnumerable contains DataRowView objects.
            Dim row As DataRowView = CType(enumerator.Current,DataRowView)
            Dim id As String = row("EmployeeID").ToString()
            Dim nwe As New NorthwindEmployee(id)
            ' Add the NorthwindEmployee object to the collection.
            al.Add(nwe)
         End While
      Finally
         ' If anything strange happens, clean up.
         sds.Dispose()
      End Try

      Return al
   End Function 'GetAllEmployees


   Public Shared Function GetEmployee(anID As Object) As NorthwindEmployee
      Return New NorthwindEmployee(anID)
   End Function 'GetEmployee


   Public Shared Sub DeleteEmployee(ne As NorthwindEmployee)
      Dim retval As Boolean = ne.Delete()
      If Not retval Then
         Throw New NorthwindDataException("Employee delete failed.")
      End If ' Delete the object in memory.
      ne = Nothing
   End Sub


   Public Shared Sub DeleteEmployeeByID(anID As Integer)
      Dim tempEmp As New NorthwindEmployee(anID)
      DeleteEmployee(tempEmp)
   End Sub

End Class

Public Class NorthwindEmployee

   Public Sub New()
      ID = DBNull.Value
      aLastName = ""
      aFirstName = ""
   End Sub


   Public Sub New(anID As Object)
      Me.ID = anID
      Dim cts As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("NorthwindConnection")
      Dim conn As New SqlConnection(cts.ConnectionString)
      Dim sc As New SqlCommand(" SELECT FirstName,LastName " & _
                               " FROM Employees " & _
                               " WHERE EmployeeID = @empId", conn)
      ' Add the employee ID parameter and set its value.
      sc.Parameters.Add(New SqlParameter("@empId", SqlDbType.Int)).Value = Int32.Parse(anID.ToString())
      Dim sdr As SqlDataReader = Nothing

      Try
         conn.Open()
         sdr = sc.ExecuteReader()

         ' This is not a while loop. It only loops once.
         If Not (sdr Is Nothing) AndAlso sdr.Read() Then
            ' The IEnumerable contains DataRowView objects.
            Me.aFirstName = sdr("FirstName").ToString()
            Me.aLastName = sdr("LastName").ToString()
         Else
            Throw New NorthwindDataException("Data not loaded for employee id.")
         End If
      Finally
         Try
            If Not (sdr Is Nothing) Then
               sdr.Close()
            End If
            conn.Close()
         Catch se As SqlException
            ' Log an event in the Application Event Log.
            Throw
         End Try
      End Try
   End Sub

   Private ID As Object
   Public ReadOnly Property EmpID() As Object
      Get
         Return ID
      End Get
   End Property

   Private aLastName As String
   Public Property LastName() As String
      Get
         Return aLastName
      End Get
      Set
         aLastName = value
      End Set
   End Property

   Private aFirstName As String
   Public Property FirstName() As String
      Get
         Return aFirstName
      End Get
      Set
         aFirstName = value
      End Set
   End Property

   Public Function Delete() As Boolean
      If ID.Equals(DBNull.Value) Then
         ' The Employee object is not persisted.
         Return True
      Else
         ' The Employee object is persisted.
         ' Use the SqlDataSource control as a convenient wrapper for
         ' the ADO.NET code needed to delete a record from the database.
         Dim cts As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("NorthwindConnection")
         Dim sds As New SqlDataSource()
         Try
            sds.ConnectionString = cts.ConnectionString
            sds.DeleteParameters.Add(New Parameter("empID", TypeCode.Int32, Me.ID.ToString()))
            sds.DeleteCommand = "DELETE FROM [Order Details] " & _
                "WHERE OrderID IN (SELECT OrderID FROM Orders WHERE EmployeeID=@empID)"
            sds.Delete()
            sds.DeleteCommand = "DELETE FROM Orders WHERE EmployeeID=@empID"
            sds.Delete()
            sds.DeleteCommand = "DELETE FROM EmployeeTerritories WHERE EmployeeID=@empID"
            sds.Delete()
            sds.DeleteCommand = "DELETE FROM Employees WHERE EmployeeID=@empID"
            sds.Delete()
            Return True
         Finally
            ' Clean up resources.
            sds.Dispose()
         End Try
      End If
   End Function 'Delete
End Class

Public Class NorthwindDataException
   Inherits Exception

   Public Sub New(msg As String)
      MyBase.New(msg)
   End Sub

End Class
End Namespace

備註

ObjectDataSourceStatusEventArgs類別是在 OnSelectedOnUpdatedOnInserted 和方法中用 OnDeleted 來提供輸出參數、傳回值和由控制項所呼叫的方法所擲回之例外狀況的存取權 ObjectDataSourceThe ObjectDataSourceStatusEventArgs class is used in the OnSelected, OnUpdated, OnInserted, and OnDeleted methods to provide access to output parameters, return values, and exceptions that are thrown by the method that is called by the ObjectDataSource control. 這些是由 OutputParametersReturnValueException 屬性分別存取。These are accessed by the OutputParameters, ReturnValue, and Exception properties, respectively. 藉由新增委派來處理 SelectedUpdatedInsertedDeleted 事件,您可以檢查此資料,並執行所需的任何其他 post 處理。By adding a delegate to handle the Selected, Updated, Inserted, or Deleted events, you can examine this data and perform any additional post processing that is required.

ObjectDataSource控制項會公開許多事件,讓您在其生命週期中的不同時間處理基礎商務物件。The ObjectDataSource control exposes many events that you can handle to work with the underlying business object at various times in its lifecycle. 下表列出事件和相關聯的 EventArgs 類別和事件處理常式委派。The following table lists the events and the associated EventArgs classes and event handler delegates.

事件Event EventArgsEventArgs EventHandlerEventHandler
ObjectCreating.ObjectCreating.

在建立商務物件的實例之前立即發生。Occurs immediately before the instance of the business object is created.
ObjectDataSourceEventArgs ObjectDataSourceObjectEventHandler
ObjectCreated.ObjectCreated.

在建立商務物件的實例之後立即發生。Occurs immediately after the instance of the business object is created.
ObjectDataSourceEventArgs ObjectDataSourceObjectEventHandler
Selecting.Selecting.

在抓取資料之前發生。Occurs before the data is retrieved.
ObjectDataSourceSelectingEventArgs ObjectDataSourceSelectingEventHandler
InsertingUpdatingDeletingInserting, Updating, and Deleting.

在執行插入、更新或刪除作業之前發生。Occur before an insert, update, or delete operation is performed.
ObjectDataSourceMethodEventArgs ObjectDataSourceMethodEventHandler
Selected.Selected.

在資料抓取之後發生。Occurs after the data is retrieved.
ObjectDataSourceStatusEventArgs ObjectDataSourceStatusEventHandler
InsertedUpdatedDeletedInserted, Updated, and Deleted.

在插入、更新或刪除作業完成之後發生。Occur after the insert, update, or delete operation is completed.
ObjectDataSourceStatusEventArgs ObjectDataSourceStatusEventHandler
ObjectDisposing.ObjectDisposing.

在終結商務物件之前發生。Occurs before a business object is destroyed.
ObjectDataSourceDisposingEventArgs ObjectDataSourceDisposingEventHandler

建構函式

ObjectDataSourceStatusEventArgs(Object, IDictionary)

使用指定的輸出參數和傳回值,初始化 ObjectDataSourceStatusEventArgs 類別的新執行個體。Initializes a new instance of the ObjectDataSourceStatusEventArgs class using the specified output parameters and return value.

ObjectDataSourceStatusEventArgs(Object, IDictionary, Exception)

使用指定的輸出參數、傳回值和例外狀況,初始化 ObjectDataSourceStatusEventArgs 類別的新執行個體。Initializes a new instance of the ObjectDataSourceStatusEventArgs class using the specified output parameters, return value, and exception.

屬性

AffectedRows

取得或設定受到資料作業影響的資料列數目。Gets or sets the number of rows that are affected by the data operation.

Exception

取得在資料作業期間由 ObjectDataSource 控制項呼叫的方法所擲回之任何例外狀況的包裝函式。Gets a wrapper for any exceptions that are thrown by the method that is called by the ObjectDataSource control during a data operation.

ExceptionHandled

取得或設定值,表示是否已處理商務物件擲回的例外狀況。Gets or sets a value indicating whether an exception that was thrown by the business object has been handled.

OutputParameters

取得包含商務物件方法參數和其值的集合。Gets a collection that contains business object method parameters and their values.

ReturnValue

取得商務物件方法傳回之做為物件的傳回值 (如果有的話)。Gets the return value that is returned by the business object method, if any, as an object.

方法

Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(繼承來源 Object)
GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(繼承來源 Object)
GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(繼承來源 Object)
MemberwiseClone()

建立目前 Object 的淺層複製。Creates a shallow copy of the current Object.

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。Returns a string that represents the current object.

(繼承來源 Object)

適用於

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