ListViewCancelEventArgs Class
Provides data for the ItemCanceling event.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
System::EventArgs
System.ComponentModel::CancelEventArgs
System.Web.UI.WebControls::ListViewCancelEventArgs
| Name | Description | |
|---|---|---|
 | ListViewCancelEventArgs(Int32, ListViewCancelMode) | Initializes a new instance of the ListViewCancelEventArgs class. |
| Name | Description | |
|---|---|---|
 | Cancel | Gets or sets a value indicating whether the event should be canceled.(Inherited from CancelEventArgs.) |
| CancelMode | Gets the data-entry mode that the ListView control was in when the Cancel button was clicked. |
| ItemIndex | Gets the index of the item that contains the Cancel button that raised the event. |
| Name | Description | |
|---|---|---|
| Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
 | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
| GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
| GetType() | |
| MemberwiseClone() | |
| ToString() | Returns a string that represents the current object.(Inherited from Object.) |
The ListView control raises the ItemCanceling event when the Cancel button is clicked, but before exiting insert or edit mode. (A Cancel button is a button whose CommandName property is set to "Cancel") This enables you to provide an event-handling method that performs a custom routine whenever this event occurs, such as stopping the cancel operation if it would put the item in an unwanted state.
A ListViewCancelEventArgs object is passed to the event-handling method. This object enables you to determine the index of the item that contains the Cancel button that raised the event. You can also determine what operation was canceled. To stop the cancel operation, set the Cancel property to true.
For a list of initial property values for an instance of the ListViewCancelEventArgs class, see the ListViewCancelEventArgs constructor.
The following example shows how to use the ListViewCancelEventArgs object to display a message when the user cancels the insert or update operation in a ListView control. The ListViewCancelEventArgs object is passed to the event-handling method for the ItemCanceling event.
Security Note
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This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
Available since 3.5
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.