ObjectDataSourceView::Update Method (IDictionary, IDictionary, IDictionary)
Performs an update operation by calling the method that is identified by the UpdateMethod property and using any parameters that are supplied in the keys, values, or oldValues collections.
Assembly: System.Web (in System.Web.dll)
Parameters
- keys
- Type: System.Collections::IDictionary
A IDictionary of the key values used to identify the item to update. These parameters are used with the method specified by the UpdateMethod property to perform the update operation. If there are no parameters associated with the method, pass nullptr.
- values
- Type: System.Collections::IDictionary
A IDictionary of new values to apply to the data source. These parameters are used with the method specified by the UpdateMethod property to perform the update database operation. If there are no parameters associated with the method, pass nullptr.
- oldValues
- Type: System.Collections::IDictionary
A IDictionary that contains the additional non-key values used to match the item in the data source. Row values are passed to the delete method, only if the ConflictDetection property is set to the CompareAllValues field.
Return Value
Type: System::Int32The number of rows updated; otherwise, -1, if the number is not known.
The default return value is -1, which means that an unknown number of rows were updated. To return a different value, set the AffectedRows property of the ObjectDataSourceStatusEventArgs object of the Updated event. The number of affected rows is typically returned by the Update method for the business object, and that value is available from the ReturnValue property of the ObjectDataSourceStatusEventArgs parameter of the Updated event.
The Update method calls the ExecuteUpdate method, passing the keys, values, and oldValues parameters.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.