Private Sub DataTableRowChanged()
     Dim custTable As DataTable = New DataTable("Customers")
     ' add columns
     custTable.Columns.Add("id", Type.GetType("System.Int32"))
     custTable.Columns.Add("name", Type.GetType("System.String"))
     custTable.Columns.Add("address", Type.GetType("System.String"))

     ' set PrimaryKey
     custTable.Columns("id").Unique = True
     custTable.PrimaryKey = New DataColumn() {custTable.Columns("id")}

     ' add a RowChanged event handler for the table.
     AddHandler custTable.RowChanged, _
            New DataRowChangeEventHandler(AddressOf Row_Changed)


     ' add ten rows
     Dim id As Integer
     For id = 1 To 10
         custTable.Rows.Add( _
New Object() {id, String.Format("customer{0}", id), _
         String.Format("address{0}", id)})
     Next

     custTable.AcceptChanges()

     ' change the name column in all the rows
     Dim row As DataRow
     For Each row In custTable.Rows
         row("name") = String.Format("vip{0}", row("id"))
     Next

 End Sub

 Private Sub Row_Changed(ByVal sender As Object, _
 ByVal e As DataRowChangeEventArgs)
     Console.WriteLine("Row_Changed Event: name={0}; action={1}", _
      e.Row("name"), e.Action)
 End Sub

    private static void DataTableRowChanged()
    {
        DataTable custTable = new DataTable("Customers");
        // add columns
        custTable.Columns.Add("id", typeof(int));
        custTable.Columns.Add("name", typeof(string));
        custTable.Columns.Add("address", typeof(string));

        // set PrimaryKey
        custTable.Columns[ "id" ].Unique = true;
        custTable.PrimaryKey = new DataColumn[] { custTable.Columns["id"] };

        // add a RowChanged event handler for the table.
        custTable.RowChanged += new DataRowChangeEventHandler(Row_Changed);


        // add ten rows
        for(int id=1; id<=10; id++)
        {
            custTable.Rows.Add(
                new object[] { id, string.Format("customer{0}", id), 
                string.Format("address{0}", id) });
        }
	
        custTable.AcceptChanges();

        // change the name column in all the rows
        foreach(DataRow row in custTable.Rows)
        {
            row["name"] = string.Format("vip{0}", row["id"]);
        }

    }

    private static void Row_Changed(object sender, DataRowChangeEventArgs e)
    {
        Console.WriteLine("Row_Changed Event: name={0}; action={1}", 
            e.Row["name"], e.Action);
    }