DetailsViewDeletedEventArgs 類別

參考

定義

命名空間:: System.Web.UI.WebControls

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

提供 ItemDeleted 事件的資料。

public ref class DetailsViewDeletedEventArgs : EventArgs

public class DetailsViewDeletedEventArgs : EventArgs

type DetailsViewDeletedEventArgs = class
    inherit EventArgs

Public Class DetailsViewDeletedEventArgs
Inherits EventArgs

繼承: Object

EventArgs
DetailsViewDeletedEventArgs

範例

下列程式碼範例示範如何使用 DetailsViewDeletedEventArgs 傳遞至事件處理常式的物件， ItemDeleted 判斷刪除作業期間是否發生例外狀況。


<%@ 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">

  void StoresDetailView_ItemDeleted(Object sender, 
    DetailsViewDeletedEventArgs e)
  {
    // Use the Exception property to determine whether an exception
    // occurred during the delete operation.
    if (e.Exception == null)
    {
      // Use the AffectedRows property to determine the numbers of
      // rows affected by the delete operation.
      if (e.AffectedRows == 1)
      {
        MessageLabel.Text = e.AffectedRows.ToString() 
          + " record deleted successfully.";
      }
      else
      {
        MessageLabel.Text = e.AffectedRows.ToString() 
          + " records deleted successfully.";
      }
    }
    else
    {
      // Insert the code to handle the exception.
      MessageLabel.Text = e.Exception.Message;
      
      // Use the ExceptionHandled property to indicate that the 
      // exception is already handled.
      e.ExceptionHandled = true;
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewDeletedEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewDeletedEventArgs Example</h3>
                
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneratedeletebutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          onitemdeleted="StoresDetailView_ItemDeleted" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <asp:label id="MessageLabel"
          forecolor="Red"
          runat="server"/>
            
        <!-- This example uses Microsoft SQL Server and connects  -->
        <!-- to the Northwind sample database. Use an ASP.NET     -->
        <!-- expression to retrieve the connection string value   -->
        <!-- from the web.config file.                            -->
        <asp:sqldatasource id="DetailsViewSource"
          selectcommand="Select [CustomerID], [CompanyName], [Address], 
            [City], [PostalCode], [Country] From [Customers]"
          deletecommand="Delete [Customers] 
            Where [CustomerID]=@CustomerID"
          connectionstring=
            "<%$ ConnectionStrings:NorthWindConnectionString%>" 
          runat="server"/>
            
      </form>
  </body>
</html>


<%@ Page language="VB" AutoEventWireup="False" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub StoresDetailView_ItemDeleted(ByVal sender As Object, _
    ByVal e As DetailsViewDeletedEventArgs) _
    Handles CustomerDetailsView.ItemDeleted
  
    ' Use the Exception property to determine whether an exception
    ' occurred during the delete operation.
    If e.Exception Is Nothing Then
    
      ' Use the AffectedRows property to determine the numbers of
      ' rows affected by the delete operation.
      If e.AffectedRows = 1 Then
      
        MessageLabel.Text = e.AffectedRows.ToString() _
          & " record deleted successfully."
      
      Else
              
        MessageLabel.Text = e.AffectedRows.ToString() _
          & " records deleted successfully."
      
      End If
    
    Else
    
      ' Insert the code to handle the exception.
      MessageLabel.Text = e.Exception.Message
      
      ' Use the ExceptionHandled property to indicate that the 
      ' exception is already handled.
      e.ExceptionHandled = True
    
    End If
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewDeletedEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewDeletedEventArgs Example</h3>
                
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneratedeletebutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <asp:label id="MessageLabel"
          forecolor="Red"
          runat="server"/>
            
        <!-- This example uses Microsoft SQL Server and connects  -->
        <!-- to the Northwind sample database. Use an ASP.NET     -->
        <!-- expression to retrieve the connection string value   -->
        <!-- from the web.config file.                            -->
        <asp:sqldatasource id="DetailsViewSource"
          selectcommand="Select [CustomerID], [CompanyName], [Address], 
            [City], [PostalCode], [Country] From [Customers]"
          deletecommand="Delete [Customers] 
            Where [CustomerID]=@CustomerID"
          connectionstring=
            "<%$ ConnectionStrings:NorthWindConnectionString%>" 
          runat="server"/>
            
      </form>
  </body>
</html>

備註

DetailsView當控制項的 [刪除] 按鈕 (CommandName 控制項的屬性設定為「Delete」) ，但在控制項刪除記錄之後 DetailsView ，控制項就會引發 ItemDeleted 事件。這可讓您提供事件處理常式來執行自訂常式，例如每當發生此事件時檢查刪除作業的結果。

DetailsViewDeletedEventArgs物件會傳遞至事件處理常式，可讓您判斷受影響的記錄數目，以及可能發生的任何例外狀況。若要判斷受刪除作業影響的記錄數目，請使用 AffectedRows 屬性。 Exception使用屬性來判斷是否發生任何例外狀況。您也可以藉由設定 ExceptionHandled 屬性，指出是否在事件處理常式中處理例外狀況。如果您想要存取已刪除記錄之索引鍵欄位和非索引鍵欄位的名稱/值組，請分別使用 Keys 和 Values 屬性。

如需如何處理事件的詳細資訊，請參閱處理和引發事件。

如需 DetailsViewDeletedEventArgs 類別之執行個體的初始屬性值清單，請參閱 DetailsViewDeletedEventArgs 建構函式。

建構函式

DetailsViewDeletedEventArgs(Int32, Exception)

初始化 DetailsViewDeletedEventArgs 類別的新執行個體。

屬性

AffectedRows	取得刪除作業所影響的資料列數目。
Exception	取得刪除作業中引發的例外狀況 (如果有的話)。
ExceptionHandled	取得或設定值，指出是否在事件處理常式中處理刪除作業中引發的例外狀況。
Keys	取得索引鍵欄位名稱/值組的排序字典，其中包含已刪除項目之索引鍵欄位的名稱和值。
Values	取得要刪除項目中非索引鍵欄位名稱/值組的字典。

方法

Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)

適用於

DetailsViewDeletedEventArgs 類別

定義

範例

備註

建構函式

屬性

方法

適用於

另請參閱

意見反應

其他資源