DetailsViewDeletedEventArgs.ExceptionHandled Property

 

Gets or sets a value indicating whether an exception that was raised during the delete operation was handled in the event handler.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

Public Property ExceptionHandled As Boolean

Property Value

Type: System.Boolean

true if the exception was handled in the event handler; otherwise, false. The default is false.

When an exception is raised during the delete operation, use the ExceptionHandled property to indicate whether the exception was handled in the event handler. When this property is set to true, the exception is considered handled and is not passed further up the call stack. If this property is set to false, the exception is passed to the next method on the call stack for handling. To determine which exception was raised, use the Exception property.

The following code example demonstrates how to use the ExceptionHandled property to indicate that the exception was handled in the event handler.


<%@ 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>

.NET Framework
Available since 2.0
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