SqlRowUpdatingEventArgs Class
Assembly: System.Data (in system.data.dll)
'Declaration Public NotInheritable Class SqlRowUpdatingEventArgs Inherits RowUpdatingEventArgs 'Usage Dim instance As SqlRowUpdatingEventArgs
public final class SqlRowUpdatingEventArgs extends RowUpdatingEventArgs
public final class SqlRowUpdatingEventArgs extends RowUpdatingEventArgs
Not applicable.
The RowUpdating event is raised before an Update to a row.
When you are using Update, there are two events that occur for each data row updated. The order of execution is as follows:
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The values in the DataRow are moved to the parameter values.
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The OnRowUpdating event is raised.
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The command executes.
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If the command is set to FirstReturnedRecord, and the first returned result is placed in the DataRow.
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If there are output parameters, they are placed in the DataRow.
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The OnRowUpdated event is raised.
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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 Shared Sub OnRowUpdating(sender As Object, e As SqlRowUpdatingEventArgs) PrintEventArgs(e) End Sub 'Handler for RowUpdated event. Private Shared Sub OnRowUpdated(sender As Object, e As SqlRowUpdatedEventArgs) PrintEventArgs(e) End Sub 'Entry point which delegates to C-style main Private Function. Public Overloads Shared Sub Main() System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs()) End Sub Overloads Public Shared Function Main(args() As String) As Integer Const CONNECTION_STRING As String = "Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer" Const SELECT_ALL As String = "select * from Products" 'Create DataAdapter. Dim rAdapter As New SqlDataAdapter(SELECT_ALL, CONNECTION_STRING) 'Create and fill DataSet (Select only first 5 rows.). Dim rDataSet As New DataSet() rAdapter.Fill(rDataSet, 0, 5, "Table") 'Modify DataSet. Dim rTable As DataTable = rDataSet.Tables("Table") rTable.Rows(0)(1) = "new product" 'Add handlers. AddHandler rAdapter.RowUpdating, AddressOf OnRowUpdating AddHandler rAdapter.RowUpdated, AddressOf OnRowUpdated 'Update--this operation fires two events (RowUpdating and RowUpdated) for each changed row. rAdapter.Update(rDataSet, "Table") 'Remove handlers. RemoveHandler rAdapter.RowUpdating, AddressOf OnRowUpdating RemoveHandler rAdapter.RowUpdated, AddressOf OnRowUpdated Return 0 End Function Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatingEventArgs) Console.WriteLine("OnRowUpdating") Console.WriteLine(" event args: (" & _ " command=" & _ args.Command.CommandText & _ " commandType=" & _ args.StatementType & _ " status=" & _ args.Status & _ ")") End Sub Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatedEventArgs) Console.WriteLine("OnRowUpdated") Console.WriteLine(" event args: (" & _ " command=" & _ args.Command.CommandText & _ " commandType=" & _ args.StatementType & _ " recordsAffected=" & _ args.RecordsAffected & _ " status=" & _ args.Status & _ ")") End Sub
System.EventArgs
System.Data.Common.RowUpdatingEventArgs
System.Data.SqlClient.SqlRowUpdatingEventArgs
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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.