FormView.ItemDeleted Event


Occurs when a Delete button within a FormView control is clicked, but after the delete operation.

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

Public Event ItemDeleted As FormViewDeletedEventHandler

The FormView control raises the ItemDeleted event when a Delete button (a button with its CommandName property set to "Delete") within the control is clicked, but after the FormView control deletes the record. This allows you to provide an event-handling method that performs a custom routine, such as checking the results of a delete operation, whenever this event occurs.

A FormViewDeletedEventArgs object is passed to the event-handling method, which allows you to determine the number of records affected and any exceptions that might have occurred. To determine the number of records affected by the delete operation, use the AffectedRows property. Use the Exception property to determine whether any exceptions occurred. You can also indicate whether the exception was handled in the event-handling method by setting the ExceptionHandled property. If you want to access the name/value pairs of the key fields and non-key fields of the deleted record, use the Keys and Values properties, respectively.

For more information about handling events, see NIB: Consuming Events.

The following example demonstrates how to use the ItemDeleted event to determine whether an exception occurred during a delete operation.

<%@ Page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<script runat="server">

  Sub EmployeeFormView_ItemDeleted(ByVal sender As Object, ByVal e As FormViewDeletedEventArgs) Handles EmployeeFormView.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 whether the
      ' record was deleted. Sometimes an error might occur that 
      ' does not raise an exception, but prevents the delete
      ' operation from completing.
      If e.AffectedRows = 1 Then

        MessageLabel.Text = "Record deleted successfully."


        MessageLabel.Text = "An error occurred during the delete operation."

      End If


      ' Insert the code to handle the exception.
      MessageLabel.Text = e.Exception.Message

      ' Use the ExceptionHandled property to indicate that the 
      ' exception has already been handled.
      e.ExceptionHandled = True

    End If

  End Sub


<html xmlns="" >
  <head runat="server">
    <title>FormViewDeletedEventArgs Example</title>
    <form id="form1" runat="server">

      <h3>FormViewDeletedEventArgs Example</h3>

      <asp:formview id="EmployeeFormView"


                <asp:image id="EmployeeImage"
                  imageurl='<%# Eval("PhotoPath") %>'
                  alternatetext='<%# Eval("LastName") %>' 
                <h3><%# Eval("FirstName") %>&nbsp;<%# Eval("LastName") %></h3>      
                <%# Eval("Title") %>        
              <td colspan="2">
                <asp:button id="DeleteButton"
                  text="Delete Record"
                  runat="server" />



      <asp:label id="MessageLabel"

      <!-- 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="EmployeeSource"
        selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
        deletecommand="Delete [Employees] Where [EmployeeID]=@EmployeeID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 


.NET Framework
Available since 2.0
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