OrElse doesn't seem to work.

[tshad]

I am trying to find out why OrElse doesn't work in my code which is a snippet of code I put together to test the OrElse.

If I take the following code:

Module Module1

Sub Main()

Dim str As String = String.Empty
Dim j As Integer
Dim k As Integer

str = "aaa"
j = 5
k = 0

If str = String.Empty Or (j / k) Then
Console.WriteLine("Inside If statement")
Else
Console.WriteLine("Inside Else Statement")
End If
Console.ReadLine()
End Sub
End Module

I get a divide by zero error (which was expected). But if I change the Or to OrElse, I don't get the error which I figured I would.

Module Module1

Sub Main()

Dim str As String = String.Empty
Dim j As Integer
Dim k As Integer

str = "aaa"
j = 5
k = 0

If str = String.Empty OrElse (j / k) Then
Console.WriteLine("Inside If statement")
Else
Console.WriteLine("Inside Else Statement")
End If
Console.ReadLine()
End Sub
End Module


Since "str = String.Empty" is false, the next test should go to "(j / k)" which should get an error (as it did before), but prints the "Inside If statement".

Why is that?

I know the OrElse will check the 1st test and if it fails (as it does here) it goes to the next.

What am I missing?

Thanks,

Tom

 

[MarkSweetland]

Not sure it's evaluating the way you think it is with OrElse

Replace your Console.WriteLine() inside the if-then-else with Console.WriteLine(j / k) and see what is output...


Mark

"You guys pair up in groups of three, then line up in a circle."
- Bill Peterson, a Florida State football coach

 

[tshad]

That was interesting.

It evaluated it as true and the new line showed me infinity.

When actually I would think it should have given me a divide by zero error as the "Or" did it either in the OrElse clause or the Console.WriteLine statement.

Seems like an error.

Thanks,

Tom