Or versus OrElse

Question

What\'s the difference between or and OrElse?

if temp is dbnull.value or temp = 0

produces the error:

Answer 1

This is the same behaviour as with C#, where everyone uses the Coditional Or (||) and the Conditional And (&&), where you also have the normal Or (|) and normal And (&). So comparing C# to VB.Net is:

| => Or

|| => OrElse

& => And

&& => AndAlso

The condifitonal boolean operators are very usefull preventing nested if constructions. But sometimes the normal boolean operators are needed to ensure hitting both code paths.