Assembly: System.Web (in system.web.dll)
/** @property */ public boolean get_AutoGenerateDeleteButton () /** @property */ public void set_AutoGenerateDeleteButton (boolean value)
public function get AutoGenerateDeleteButton () : boolean public function set AutoGenerateDeleteButton (value : boolean)
Property Valuetrue to automatically add a CommandField field column with a Delete button for each data row; otherwise, false. The default is false.
When a data source control that supports deleting is bound to a GridView control, the GridView control can take advantage of the data source control's capabilities and provide automatic deleting functionality.
For a data source control to delete data, it must be configured to delete data. To configure a data source control to delete records, see the documentation for the specific data source control.
When the AutoGenerateDeleteButton property is set to true, a column (represented by a CommandField object) with a Delete button for each data row is automatically added to the GridView control. Clicking the Delete button for a row permanently removes that record from the data source.
You must also set the DataKeyNames property to identify the key field or fields of the data source for the automatic deleting feature to work.
The GridView control provides several events that you can use to perform a custom action when a row is deleted. The following table lists the available events.
Occurs when a row's Delete button is clicked, but after the GridView control deletes the record from the data source. This event is often used to check the results of the delete operation.
Occurs when a row's Delete button is clicked, but before the GridView control deletes the record from the data source. This event is often used to cancel the deleting operation.
The following code example demonstrates how to use the AutoGenerateDeleteButton property to enable the automatic deleting feature of a GridView control.
<%@ Page language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView Edit Example</title> </head> <body> <form id="form1" runat="server"> <h3>GridView Edit Example</h3> <!-- The GridView control automatically sets the columns --> <!-- specified in the datakeynames property as read-only. --> <!-- No input controls are rendered for these columns in --> <!-- edit mode. --> <asp:gridview id="CustomersGridView" datasourceid="CustomersSqlDataSource" autogeneratecolumns="true" autogeneratedeletebutton="true" autogenerateeditbutton="true" datakeynames="CustomerID" 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]" updatecommand="Update Customers SET CompanyName=@CompanyName, Address=@Address, City=@City, PostalCode=@PostalCode, Country=@Country WHERE (CustomerID = @CustomerID)" deletecommand="Delete from Customers where CustomerID = @CustomerID" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"> </asp:sqldatasource> </form> </body> </html>