events call backs

[MikeJ]

hi i have a class..i want to fire events
so a ui can respond
where can i find a good example
tks
mJ

 

[Michael C]

The help file or google?

 

[ClayB]

1) You declare the event.

public delegate void DateValueChangingEventHandler(object sender,
DateValueEventArgs e);
public event DateValueChangingEventHandler DateValueChanging;


2) You define the argument classes (if you are using a derived
argument class).

public class DateValueEventArgs : CancelEventArgs
{
//...
}

3) You raise the event in your code :

DateValueEventArgs e = new DateValueEventArgs(oldValue, newValue);
if(DateValueChanging != null)
{
DateValueChanging(this, e);
}

=====================
Clay Burch
Syncfusion, Inc.