SqlDataAdapter.RowUpdating Event
Occurs during Update before a command is executed against the data source. The attempt to update is made, so the event fires.
Namespace: System.Data.SqlClient
Assembly: System.Data (in System.Data.dll)
When using Update, there are two events that occur per data row updated. The order of execution is as follows:
The values in the DataRow are moved to the parameter values.
The OnRowUpdating event is raised.
The command executes.
If the command is set to FirstReturnedRecord, the first returned result is placed in the DataRow.
If there are output parameters, they are placed in the DataRow.
The OnRowUpdated event is raised.
AcceptChanges is called.
The following example shows how to use both the RowUpdating and RowUpdated events.
The RowUpdating event returns this output:
event args: (command=System.Data.SqlClient.SqlCommand commandType=2 status=0)
The RowUpdated event returns this output:
event args: (command=System.Data.SqlClient.SqlCommand commandType=2 recordsAffected=1 row=System.Data.DataRow[37] status=0)
// handler for RowUpdating event private static void OnRowUpdating(object sender, SqlRowUpdatingEventArgs e) { PrintEventArgs(e); } // handler for RowUpdated event private static void OnRowUpdated(object sender, SqlRowUpdatedEventArgs e) { PrintEventArgs(e); } public static int Main() { const string connectionString = "Integrated Security=SSPI;database=Northwind;server=MSSQL1"; const string queryString = "SELECT * FROMProducts"; // create DataAdapter SqlDataAdapter adapter = new SqlDataAdapter(queryString, connectionString); SqlCommandBuilder builder = new SqlCommandBuilder(adapter); // Create and fill DataSet (select only first 5 rows) DataSet dataSet = new DataSet(); adapter.Fill(dataSet, 0, 5, "Table"); // Modify DataSet DataTable table = dataSet.Tables["Table"]; table.Rows[0][1] = "new product"; // add handlers adapter.RowUpdating += new SqlRowUpdatingEventHandler( OnRowUpdating ); adapter.RowUpdated += new SqlRowUpdatedEventHandler( OnRowUpdated ); // update, this operation fires two events // (RowUpdating/RowUpdated) per changed row adapter.Update(dataSet, "Table"); // remove handlers adapter.RowUpdating -= new SqlRowUpdatingEventHandler( OnRowUpdating ); adapter.RowUpdated -= new SqlRowUpdatedEventHandler( OnRowUpdated ); return 0; } private static void PrintEventArgs(SqlRowUpdatingEventArgs args) { Console.WriteLine("OnRowUpdating"); Console.WriteLine(" event args: ("+ " command=" + args.Command + " commandType=" + args.StatementType + " status=" + args.Status + ")"); } private static void PrintEventArgs(SqlRowUpdatedEventArgs args) { Console.WriteLine("OnRowUpdated"); Console.WriteLine( " event args: ("+ " command=" + args.Command + " commandType=" + args.StatementType + " recordsAffected=" + args.RecordsAffected + " status=" + args.Status + ")"); }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
