Nothing is assigned to an object variable by using the Set statement. You can assign the same actual object to multiple object variables in vba code, and this association uses your systemFor objects, you cannot test if an objectvariable is equal to something, and using instead of Is will give an error. Theres good blog Article on Null vs Nothing by Eric Lippert. Nothing does not equal default in all cases.-1. Its a great article but its about VBScript and the question is about Visual Basic.Net. In a mixed code project (VB and C) we were debugging some old Visual Basic code where a statement as follows could be foundI just found out, -- probably for the tenth time and I will keep forgetting -- that the following two statements are not equal, while Nothing in VB should be equal to In its more than seven versions, Visual Basic has continued to provide us with the features we need to create rich, powerful Windows applications and as our needs evolved, so too did the VisualYou can check for Nothing by setting the Object variable equal to Nothing or by using the IsNothing function. Abel - 1 year ago 92. C Question. Nothing equals String.Empty, null does not equal String.Empty, what am I missing here? In a mixed code project (VB and C) we were debugging some old Visual Basic code like this The intent of this article is to once and for all prove, by means of empirical evidence, that the MSIL code generated by the VB and C compilers are not equal, particularlyReturn i End Function. Public Sub foo2(ByVal test As Boolean). Dim s As String Nothing. If s String.Empty Then. End If End Sub.
Advanced Search. VBForums. Visual Basic. Visual Basic 6 and Earlier. [RESOLVED] correct usage of "Is Not Nothing". If this is your first visit, be sure to check out the FAQ by clicking the link above. If the left and/or right side is an object, the objects content is compared for equality. So the variable is dereference. That wont work for Nothing as it references nothing.For that purpose, Visual Basic and VBA have the IS operator. VBA Comparison operators. These are operators that are used to compare values.