System.Data.OleDb Namespace   OleDbDataAdapter Class

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Occurs during Update before a command is executed against the data source. The attempt to update is made, so the event fires.

[ VB ]
Public Event RowUpdating As OleDbRowUpdatingEventHandler

[ C# ]
public event OleDbRowUpdatingEventHandler RowUpdating;
[ C++ ]
public: __event OleDbRowUpdatingEventHandler* RowUpdating;

In [ JScript ], you can handle the events defined by a class, but you cannot define your own.

The event handler receives an argument of type OleDbRowUpdatingEventArgs containing data related to this event. The following OleDbRowUpdatingEventArgs properties provide information specific to this event.

Property	Description
Command	Sets or retrieves the OleDbCommand to execute when performing the Update.
Errors ( inherited from RowUpdatingEventArgs )	Gets the errors generated by the .NET data provider when the Command executes.
Row ( inherited from RowUpdatingEventArgs )	Gets the DataRow to send through an Update.
StatementType ( inherited from RowUpdatingEventArgs )	Gets the type of SQL statement to execute.
Status ( inherited from RowUpdatingEventArgs )	Gets the UpdateStatus of the Command.
TableMapping ( inherited from RowUpdatingEventArgs )	Gets the DataTableMapping sent through an Update.

When using Update, there are two events that occur per data row updated. The order of execution is as follows:

1. the values in the DataRow are moved to the parameter values.
2. the OnRowUpdating event is raised.
3. the command executes.
4. If the command is set to FirstReturnedRecord, then the first returned result is placed in the DataRow.
5. If there are output parameters, they are placed in the DataRow.
6. the OnRowUpdated event is raised.
7. AcceptChanges is called.

OleDbDataAdapter Members   OleDbRowUpdatingEventArgs Class   OleDbRowUpdatingEventHandler Delegate

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