SqlRowUpdatedEventArgs Class

Definition

public ref class SqlRowUpdatedEventArgs sealed : System::Data::Common::RowUpdatedEventArgs

public sealed class SqlRowUpdatedEventArgs : System.Data.Common.RowUpdatedEventArgs

type SqlRowUpdatedEventArgs = class
    inherit RowUpdatedEventArgs

Public NotInheritable Class SqlRowUpdatedEventArgs
Inherits RowUpdatedEventArgs

Inheritance

Object

EventArgs

RowUpdatedEventArgs

SqlRowUpdatedEventArgs

Examples

The following example shows how to use both the RowUpdating and RowUpdated events.

The RowUpdating event returns this output:

Event Arguments: (command=System.Data.SqlClient.SqlCommand commandType=2 status=0)

The RowUpdated event returns this output:

Event Arguments: (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 = "...";
    const string queryString = "SELECT * FROM Products";

    // create DataAdapter
    SqlDataAdapter adapter = new(queryString, connectionString);
    SqlCommandBuilder builder = new(adapter);

    // Create and fill DataSet (select only first 5 rows)
    DataSet dataSet = new();
    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 + ")");
}

    ' 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

    Public Overloads Shared Function Main(args() As String) As Integer
        Const connectionString As String = "..."
        Const queryString As String = "SELECT * FROM Products"

        ' create DataAdapter
        Dim adapter As New SqlDataAdapter(queryString, connectionString)
        Dim builder As New SqlCommandBuilder(adapter)

        ' Create and fill DataSet (select only first 5 rows)
        Dim dataSet As New DataSet()
        adapter.Fill(dataSet, 0, 5, "Table")

        ' Modify DataSet
        Dim table As DataTable = dataSet.Tables("Table")
        table.Rows(0)(1) = "new product"

        ' add handlers
        AddHandler adapter.RowUpdating, AddressOf OnRowUpdating
        AddHandler adapter.RowUpdated, AddressOf OnRowUpdated

        ' update, this operation fires two events
        '(RowUpdating/RowUpdated) per changed row
        adapter.Update(dataSet, "Table")

        ' remove handlers
        RemoveHandler adapter.RowUpdating, AddressOf OnRowUpdating
        RemoveHandler adapter.RowUpdated, AddressOf OnRowUpdated
        Return 0
    End Function


    Private Overloads 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


    Private Overloads 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
End Class

Remarks

The RowUpdated event is raised when an Update to a row is completed.

When using Update, there are two events that occur for each 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, and 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.

See also

• ADO.NET Overview