Difference Between LostFocus Event and Leave Event of TextBox - c#-4.0

Question

What is the difference between the LostFocus and the Leave events of TextBox?

Answer 1

Check the notes section on these links:
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.lostfocus.aspx
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.leave.aspx
According to MSDN, there is difference when changing focus of a control. The Leave event occurs before a validation and LostFocus occurs after validation.
UPDATE: 14 Feb 2019
I see that I'm still getting views and upvotes on the answer that I posted couple of years ago. It has now become imperative that I include a (rather important) quote from the MSDN links above to avoid confusion among new programmers (note the difference of order esp. in case of focus by using the mouse or by calling the Focus method):
When you change the focus by using the keyboard (TAB, SHIFT+TAB, and
so on), by calling the Select or SelectNextControl methods, or by
setting the ContainerControl.ActiveControl property to the current
form, focus events occur in the following order:
Enter
GotFocus
Leave <--- before validation
Validating --
|<--- validation
Validated --
LostFocus <--- after validation
When you change the focus by using the mouse or by calling the Focus
method, focus events occur in the following order:
Enter
GotFocus
LostFocus <--- before validation
Leave <--- before validation
Validating --
|<--- validation
Validated --
N.B: Emphasis on text and indicators in the quote added by me

Answer 2

They happen at different points in the control's lifecycle. Depending on the method used, validation happens after Leave and before LostFocus.
See MSDN: http://msdn.microsoft.com/en-us/library/system.windows.forms.control.lostfocus.aspx

Answer 3

Leave() event means that first executes keyboard event and then executes mouse event where as Lost() event means that first executes mouse event and then executes keyboard event.

Answer 4

To sum up, it either won't work for the keyboard or it won't work for the mouse. Considering you can't predict what input method will be used it's not very helpful.
However, that's not my point. LostFocus will happen when the form loads, Leave does not.
This would turn the text box yellow when the form is loaded.
Private Sub txtBox_LostFocus(sender As Object, e As EventArgs) Handles TextBox.LostFocus
txtBox.BackColor = Color.Yellow
End Sub
This would not.
Private Sub txtBox_TextLeave(sender As Object, e As EventArgs) Handles TextBox.Leave
txtBox.BackColor = Color.Yellow
End Sub