IsNothing in C# 1

[lfc77]

What's the C# equivalent of VB IsNothing ?


Thanks,

lfc77

 

[timothy]

Just a shot in the dark, check isnull or null.

 

[rosenk]

Instead of [tt]If IsNothing(blah) Then[/tt] you would do [tt]if (blah != null) {[/tt]

 

[chiph]

Or reverse the sides of the comparison operator if you're like me and occasionally forget to type one of the equals signs:

if (null == blah)

That way the compiler flags it as trying to assign a value to a constant.

Chip H.


If you want to get the best response to a question, please check out FAQ222-2244 first

 

[merlyn2450]

rofl

 

[chiph]

merlyn2450 -

It's actually a technique that I saw used in MFC programming. The compiler messages in C# are pretty good and usually catch you leaving one of the equals-signs off. In straight C++, the compiler usually doesn't tell you unless the datatypes on both sides are different (in which case you need to be doing a cast anyway). So you end up coding an assignment instead of a comparison, and you don't find out until runtime (uh-oh!).

So, by putting the constant value (if any) on the left-hand side of the comparison operator, you protect yourself against typos.

Chip H.


If you want to get the best response to a question, please check out FAQ222-2244 first