Update Method

DataSourceView.Update Method (IDictionary, IDictionary, IDictionary, DataSourceViewOperationCallback)

 

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)

abstract Update : 
        keys:IDictionary *
        values:IDictionary *
        oldValues:IDictionary *
        callback:DataSourceViewOperationCallback -> unit
override Update : 
        keys:IDictionary *
        values:IDictionary *
        oldValues:IDictionary *
        callback:DataSourceViewOperationCallback -> unit

Parameters

keys
Type: System.Collections.IDictionary

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

values
Type: System.Collections.IDictionary

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

oldValues
Type: System.Collections.IDictionary

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

callback
Type: System.Web.UI.DataSourceViewOperationCallback

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

Exception Condition
ArgumentNullException

The DataSourceViewOperationCallback supplied is null.

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.

.NET Framework
Available since 2.0
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