WithEvents (Visual Basic)
Specifies that one or more declared member variables refer to an instance of a class that can raise events.
Remarks
When a variable is defined using WithEvents
, you can declaratively specify that a method handles the variable's events using the Handles
keyword.
You can use WithEvents
only at class or module level. This means the declaration context for a WithEvents
variable must be a class or module and cannot be a source file, namespace, structure, or procedure.
You cannot use WithEvents
on a structure member.
You can declare only individual variables—not arrays—with WithEvents
.
Rules
Element Types. You must declare WithEvents
variables to be object variables so that they can accept class instances. However, you cannot declare them as Object
. You must declare them as the specific class that can raise the events.
The WithEvents
modifier can be used in this context: Dim Statement
Example
Dim WithEvents app As Application
See also
Phản hồi
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