Question

I’m checking If a border’s child property is not set to nothing or equal to a given element, but whenever I run the program, it says that it’s set to nothing and crashes. Here’s my code:

If Not Me.Child.Equals(Nothing) Then ...
If Me.Child.Equals(value) Then ...

Both gives an error. What should I do to pass these lines? Also in C# it would look like this:

if(this.Child != null) ...
if (this.Child != value) ...

But this time it doesn’t give an error. So what I’m doing wrong?

Answer 1

If Child is nothing (or null), then trying to invoke the Equals method on it will be an error. The VB version of what your C# code is doing for the null check would be

If Not Me.Child Is Nothing Then
     ...
End If