GridView.RowDeleted Ereignis

Definition

Tritt ein, wenn auf die Schaltfläche Löschen einer Zeile geklickt wird, allerdings nachdem das GridView-Steuerelement die Zeile gelöscht hat.Occurs when a row's Delete button is clicked, but after the GridView control deletes the row.

public:
 event System::Web::UI::WebControls::GridViewDeletedEventHandler ^ RowDeleted;
public event System.Web.UI.WebControls.GridViewDeletedEventHandler RowDeleted;
member this.RowDeleted : System.Web.UI.WebControls.GridViewDeletedEventHandler 
Public Custom Event RowDeleted As GridViewDeletedEventHandler 

Beispiele

Im folgenden Beispiel wird veranschaulicht, wie das RowDeleted -Ereignis verwendet wird, um das Ergebnis des Löschvorgangs zu überprüfen.The following example demonstrates how to use the RowDeleted event to check the result of the delete operation. Eine Meldung wird angezeigt, um dem Benutzer mitzuteilen, ob der Vorgang erfolgreich abgeschlossen wurde.A message is displayed to indicate to the user whether the operation succeeded.


<%@ 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 CustomersGridView_RowDeleted(Object sender, GridViewDeletedEventArgs e)
  {
    
    // Display whether the delete operation succeeded.
    if(e.Exception == null)
    {
      Message.Text = "Row deleted successfully.";
    }
    else
    {
      Message.Text = "An error occurred while attempting to delete the row.";
      e.ExceptionHandled = true;   
    }
    
  }
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowDeleted Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowDeleted Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"          
        runat="server"/>
                
      <br/>
            
      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogeneratedeletebutton="true"
        datakeynames="CustomerID"
        onrowdeleted="CustomersGridView_RowDeleted"  
        runat="server">
      </asp:gridview>
            
      <!-- 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="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        deletecommand="Delete from Customers where CustomerID = @CustomerID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
      
    </form>
  </body>
</html>


<%@ 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">

  Sub CustomersGridView_RowDeleted(sender As Object, e As GridViewDeletedEventArgs)
    
    ' Display whether the delete operation succeeded.
    If e.Exception Is Nothing Then
    
      Message.Text = "Row deleted successfully."
    
    Else
          
      Message.Text = "An error occurred while attempting to delete the row."
      e.ExceptionHandled = True
      
    End If
    
  End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowDeleted Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowDeleted Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"          
        runat="server"/>
                
      <br/>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogeneratedeletebutton="true"
        datakeynames="CustomerID"
        onrowdeleted="CustomersGridView_RowDeleted"  
        runat="server">
      </asp:gridview>
            
      <!-- 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="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        deletecommand="Delete from Customers where CustomerID = @CustomerID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
      
    </form>
  </body>
</html>

Hinweise

Das RowDeleted -Ereignis wird ausgelöst, wenn auf die Schaltfläche Löschen einer Zeile geklickt wird GridView , aber nachdem das-Steuerelement die Zeile gelöscht hat.The RowDeleted event is raised when a row's Delete button is clicked, but after the GridView control deletes the row. Dies ermöglicht es Ihnen, eine Ereignis Behandlungsmethode bereitzustellen, die eine benutzerdefinierte Routine ausführt, z. b. das Überprüfen der Ergebnisse des Löschvorgangs, wenn dieses Ereignis auftritt.This enables you to provide an event-handling method that performs a custom routine, such as checking the results of the delete operation, whenever this event occurs.

Ein GridViewDeletedEventArgs -Objekt wird an die Ereignis Behandlungsmethode übermittelt, mit der Sie die Anzahl der betroffenen Zeilen und ggf. aufgetretenen Ausnahmen ermitteln können.A GridViewDeletedEventArgs object is passed to the event-handling method, which enables you to determine the number of rows affected and any exceptions that might have occurred. Sie können auch angeben, ob die Ausnahme in der Ereignis Behandlungsmethode behandelt wurde, indem Sie ExceptionHandled die-Eigenschaft GridViewDeletedEventArgs des-Objekts festgelegt haben.You can also indicate whether the exception was handled in the event-handling method by setting the ExceptionHandled property of the GridViewDeletedEventArgs object.

Weitere Informationen zum Behandeln von Ereignissen finden Sie unter behandeln und Auslösen von Ereignissen.For more information about how to handle events, see Handling and Raising Events.

Gilt für:

Siehe auch