DataTable.ColumnChanged Event

public event DataColumnChangeEventHandler ColumnChanged

/** @event */
public void add_ColumnChanged (DataColumnChangeEventHandler value)

/** @event */
public void remove_ColumnChanged (DataColumnChangeEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

private static void DataTableColumnChanged()
{
    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 ColumnChanged event handler for the table.
    custTable.ColumnChanged += new 
        DataColumnChangeEventHandler(Column_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 Column_Changed(object sender, DataColumnChangeEventArgs e )
{
    Console.WriteLine("Column_Changed Event: name={0; Column={1; original name={2", 
        e.Row["name"], e.Column.ColumnName, e.Row["name", DataRowVersion.Original]);