DetailsViewDeletedEventArgs.Exception Property
.NET Framework (current version)
Gets the exception (if any) that was raised during the delete operation.
Assembly: System.Web (in System.Web.dll)
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.
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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="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>
.NET Framework
Available since 2.0
Available since 2.0
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