DataSourceView.Update Method

Performs an asynchronous update operation on the list of data that the DataSourceView object represents.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

virtual void Update (
	IDictionary^ keys, 
	IDictionary^ values, 
	IDictionary^ oldValues, 
	DataSourceViewOperationCallback^ callback
public void Update (
	IDictionary keys, 
	IDictionary values, 
	IDictionary oldValues, 
	DataSourceViewOperationCallback callback
public function Update (
	keys : IDictionary, 
	values : IDictionary, 
	oldValues : IDictionary, 
	callback : DataSourceViewOperationCallback
Not applicable.



An IDictionary of object or row keys to be updated by the update operation.


An IDictionary of name/value pairs that represent data elements and their new values.


An IDictionary of name/value pairs that represent data elements and their original values.


A DataSourceViewOperationCallback delegate that is used to notify a data-bound control when the asynchronous operation is complete.

Exception typeCondition


The DataSourceViewOperationCallback supplied is a null reference (Nothing in Visual Basic).

The Update method is the asynchronous data modification interface for all data source view objects. The Update method calls the ExecuteUpdate method using any keys, values, and oldValues parameter values supplied. The callback parameter is a delegate that a data-bound control passes to the data source view, which is used to notify the data-bound control when the ExecuteUpdate operation has completed. The method uses the parameters of the DataSourceViewOperationCallback delegate to return the number of affected records and any Exception exception that is thrown by the ExecuteUpdate call.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0