DataList.UpdateCommand Event
Assembly: System.Web (in system.web.dll)
public: event DataListCommandEventHandler^ UpdateCommand { void add (DataListCommandEventHandler^ value); void remove (DataListCommandEventHandler^ value); }
/** @event */ public void add_UpdateCommand (DataListCommandEventHandler value) /** @event */ public void remove_UpdateCommand (DataListCommandEventHandler value)
JScript supports the use of events, but not the declaration of new ones.
The UpdateCommand event is raised when the Update button for an item is clicked.
A typical handler for the UpdateCommand event updates the data, sets the EditItemIndex property to -1 (to deselect the item), and then rebinds the data to the DataList control.
Caution |
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| This control can be used to display user input, which might include malicious client script. Check any information that is sent from a client for executable script, SQL statements, or other code before displaying it in your application. You can use validation controls to verify user input before displaying the input text in a control. ASP.NET provides an input request validation feature to block script and HTML in user input. For more information, see Securing Standard Controls, How to: Protect Against Script Exploits in a Web Application by Applying HTML Encoding to Strings, and Validating User Input in ASP.NET Web Pages. |
For more information about handling events, see How to: Consume Events in a Web Forms Application.
The following code example demonstrates how to specify and code a handler for the UpdateCommand event. It allows you to update the selected item in the DataList control with the new values entered by the user when the Update button is clicked.
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| The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Page Code Model. |
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Reference
DataList ClassDataList Members
System.Web.UI.WebControls Namespace
DataListCommandEventHandler
OnUpdateCommand
DataList.CancelCommand Event
DataList.DeleteCommand Event
DataList.EditCommand Event
Other Resources
DataList Web Server ControlHow to: Consume Events in a Web Forms Application
ASP.NET Web Page Code Model
Caution
Note