/// <summary>
/// Initializes new instance of DataRowTrigger with specified row action, table name, handler and subscribes it to appropriate data events.
/// </summary>
/// <param name="rowAction">row action flags</param>
/// <param name="tableName">table name to match</param>
/// <param name="handler">handler delegate</param>
/// <param name="broker">data events broker</param>
public DataRowTrigger(DataRowActionType rowAction, string tableName, Action <DataRowTriggerEventArgs> handler, DataEventBroker broker)
{
TableName = tableName;
Action = rowAction;
Handler = handler;
SubscribeForEvents(broker);
}
protected virtual void Execute(DataRowActionType eventType, DataRow r, object sender, EventArgs args)
{
if (Handler != null)
{
Handler(new DataRowTriggerEventArgs(eventType, r, sender, args));
}
}
public DataRowTriggerEventArgs(DataRowActionType action, DataRow r, object sender, EventArgs args)
{
Action = action;
Row = r;
Sender = sender;
Args = args;
}
protected virtual bool IsMatch(DataRow r, DataRowActionType eventType)
{
// event
if ((Action & eventType) != eventType)
{
return(false);
}
// table name
if (TableName != null && TableName != r.Table.TableName)
{
return(false);
}
return(true);
}
/// <summary>
/// Initializes new instance of DataRowTrigger with specified row action, table name and handler
/// </summary>
/// <param name="rowAction">row action flags</param>
/// <param name="tableName">table name to match</param>
/// <param name="handler">handler delegate</param>
public DataRowTrigger(DataRowActionType rowAction, string tableName, Action <DataRowTriggerEventArgs> handler) :
this(rowAction, tableName, handler, null)
{
}
