GridView.RowDeleted Event (System.Web.UI.WebControls)

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RowDeleted Event

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

GridView..::.RowDeleted Event

Occurs when a row's Delete button is clicked, but after the GridView control deletes the row.

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

Syntax

Visual Basic (Declaration)

Public Event RowDeleted As GridViewDeletedEventHandler

Visual Basic (Usage)

Dim instance As GridView
Dim handler As GridViewDeletedEventHandler

AddHandler instance.RowDeleted, handler

public event GridViewDeletedEventHandler RowDeleted

Visual C++

public:
 event GridViewDeletedEventHandler^ RowDeleted {
    void add (GridViewDeletedEventHandler^ value);
    void remove (GridViewDeletedEventHandler^ value);
}

JScript

JScript does not support events.

ASP.NET

<asp:GridView OnRowDeleted="GridViewDeletedEventHandler" />

Remarks

The RowDeleted event is raised when a row's Delete button is clicked, but after the GridView control deletes the row. 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.

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. You can also indicate whether the exception was handled in the event-handling method by setting the ExceptionHandled property of the GridViewDeletedEventArgs object.

For more information about handling events, see Consuming Events.

Examples

The following example demonstrates how to use the RowDeleted event to check the result of the delete operation. A message is displayed to indicate to the user whether the operation succeeded.

Visual Basic

<%@ 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  >
  <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="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  >
  <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>

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

GridView Class

GridView Members

System.Web.UI.WebControls Namespace

GridViewDeletedEventArgs

AutoGenerateDeleteButton

Other Resources

Consuming Events