> Can someone please tell me the what is the defference betweeen
delegates and events handler???
..NET application raise events. They can (and should) be handled by a special
set of subs, ie.
Private Sub cbMyCombo_SelectedIndexChanged(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles cbServerType.SelectedIndexChanged
this sub handles SelectedIndexChanged event for ComboBox control
Delegates, on the other hand, are like C++ pointers to functions, but more
powerful. From VS.NET help:
"It is a reference type that refers to a Shared method of a type or to an
instance method of an object. The closest equivalent of a delegate in other
languages is a function pointer, but whereas a function pointer can only
reference Shared functions, a delegate can reference both Shared and
instance methods. In the latter case, the delegate stores not only a
reference to the method's entry point, but also a reference to the object
instance with which to invoke the method."
Events and delegates are closely associated in Visual Basic .NET. An event
is a message sent by an object announcing that something important has
happened. Events are implemented using delegates, a form of object-oriented
function pointer that allows a function to be invoked indirectly by way of a
reference to the function.
sincerely,
--
Sebastian Zaklada
Skilled Software
http://www.skilledsoftware.com
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SQL Source Control 2003 - for
SQL Server Source Safe integration
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