Set Statement

DIAdem 2018 Help


Edition Date: June 2018
Part Number: 370858P-01
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Use the Set statement to assign an object reference to a variable.

Set ObjectVar = ObjectExpression | New ClassName | Nothing
ObjectVarName of the variable according to the standard conventions.
ObjectExpressionExpression that consists of an object name, another object variable, or a function or method that returns and object. .
New ClassNameExpression with which you create a new instance of the ClassName class. You can define a class using the Class statement. If ObjectVar already contains a reference to an object, this reference is released as soon as the new reference is assigned.
NothingKeyword that cancels the assignment of the object variables to the object. If there are no further references to this object, you also release the system resources and the memory resources.

With the Dim statement, you declare one variable. If you want this variable to refer to an object, use the Set statement to create a reference to the object. You also can define several object variables that simultaneously refer to the same object. If you change the object, these changes always affect all variables that refer to this object.

The following example shows how you can generate an object of the FileSystemObject class, use it, and then release it:

Dim FSO, bExists
Set FSO = CreateObject("Scripting.FileSystemObject")
bExists = FSO.FileExists("C:\Autoexec.bat")
Call MsgBox(bExists)
' further instructions
Set FSO = Nothing

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