May be give you some more similar information.

This waste me 2 hrs for finding the right Keywords!!

+= EventHandler(xxxxx) does Click, DoubleClick, Enter, Leave, ...
+= KeyEventHandler(xxxxx) does KeyUp, KeyDown, KeyXXXX...
+= MouseEventHandler(xxxx) does MouseUp, MouseWheel, ...

I donno KeyEventHandler, waste a lot of time to try but simple.


>Thanks. althought I'm still sorta fuzzy. Sorry for the confusion. I'm still looking C# throughg the lens of VFP.
>
>See my notes in line.
>
>

>
>// I understand this. It's the event declaration
>public event EventHandler MyFooBar;
>
>// I get this
>if (this.MyTextBox.Text == "FOO")
>
>      // I looked up the EventArgs class on MSDN. It states:
>      //
>      // "This class contains no event data; it is used by events that do not pass state
>      // information to an event handler when an event is raised. If the event handler
>      // requires state information, the application must derive a class from this class
>      // to hold the data."
>      //
>      // So this creates and passes a default EventArgs class because OnMyFooBar
>      // takes an EventArgs parameter, correct?
>	this.OnMyFooBar(new EventArgs());
>
>
>// Lastly, this raises the MyFooBar event:
>protected virtual void OnMyFooBar(EventArgs e)
>{
>        // This is don't get at all. MyFooBar is an event definition. How can it be Null?
>        // What would make it not null?
>	if MyFooBar != null)
>		MyFooBar(this, e);
>}
>

>
>
>This I need help with:
>
>

>
>// Can you translate this into english for me?
>this.oMyControl.MyFooBar += new System.EventHandler(this.oMyControl_MyFooBarHandler);
>
>// This is the function to run when the event is raised, correct?
>private void oMyControl_MyFooBarHandler(object sender, System.EventArgs e)
>{
>	// whatever your code needs to be
>}
>