/// <include file='doc\OleDbDataAdapter.uex' path='docs/doc[@for="OleDbDataAdapter.OnRowUpdating1"]/*' />
override protected void OnRowUpdating(RowUpdatingEventArgs value)
{
OleDbRowUpdatingEventHandler handler = (OleDbRowUpdatingEventHandler)Events[ADP.EventRowUpdating];
if ((null != handler) && (value is OleDbRowUpdatingEventArgs))
{
handler(this, (OleDbRowUpdatingEventArgs)value);
}
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// oledbrowupdatingeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this OleDbRowUpdatingEventHandler oledbrowupdatingeventhandler, Object sender, OleDbRowUpdatingEventArgs e, AsyncCallback callback)
{
if (oledbrowupdatingeventhandler == null)
{
throw new ArgumentNullException("oledbrowupdatingeventhandler");
}
return(oledbrowupdatingeventhandler.BeginInvoke(sender, e, callback, null));
}
protected override void OnRowUpdating(RowUpdatingEventArgs value)
{
OleDbRowUpdatingEventHandler handler = (OleDbRowUpdatingEventHandler)base.Events[EventRowUpdating];
if ((handler != null) && (value is OleDbRowUpdatingEventArgs))
{
handler(this, (OleDbRowUpdatingEventArgs)value);
}
base.OnRowUpdating(value);
}
private void ClearHandlers()
{
if (null != this.adohandler)
{
((OleDbDataAdapter)this.adapter).RowUpdating -= this.adohandler;
this.adohandler = null;
}
else if (null != this.sqlhandler)
{
((SqlDataAdapter)this.adapter).RowUpdating -= this.sqlhandler;
this.sqlhandler = null;
}
else if (null != this.odbchandler)
{
((OdbcDataAdapter)this.adapter).RowUpdating -= this.odbchandler;
this.odbchandler = null;
}
}
