DetailsViewDeletedEventArgs.Exception Property

 

Gets the exception (if any) that was raised during the delete operation.

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

Public ReadOnly Property Exception As Exception

Property Value

Type: System.Exception

An Exception that represents the exception that was raised during the delete operation.

Use the Exception property to determine the exception (if any) that was raised during the delete operation. If no exceptions were raised, this property returns null.

System_CAPS_noteNote

If an exception was raised and you decide to handle the exception in the event handler, be sure to set the ExceptionHandled property to true; otherwise, the exception is passed to the next method on the call stack for handling.

The following code example demonstrates how to use the Exception property to determine whether an exception occurred during a delete operation.


<%@ 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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