I am writing a program with VB .NET that uses the Excel
object library. I tried to get a value from a cell and
assign it to a variable:

strVar = CStr(Worksheet.Range("A10").Value)

But if the cell is empty, the returned value is Nothing.
So I modified the code to check for Nothing:

With Worksheet
strVar = CStr(IIf(.Range("A10").Value =
Nothing, "", .Range("A10").Value))
End With

However, I kept getting an Error 91.

I tried checking the .Text property of the cell, but that
always comes back with an empty string if the cell is
hidden.

Any suggestion on how I accomplish this?