Checking variables containing nothing

[Hylsan]

Hi
Ok it might be a wierd subject but i couldnt come up with a better.

I have a integer that i wanna check if it has any value. When looking at it with a watch it contains "nothing" but how do i write that in the code?
This is how it looks now but aint working;

if -1 <> iVariable then
  ...
end if

Hope you understand what i mean, and that you can help me.

Thanks in advance!

/Hylsan

 

[SqueakinSweep]

if iVariable is Nothing
'Your Code
endif

Sweep
...if it works dont mess with it

 

[bueller]

Hylsan,

To do this use the is nothing command in the so it would look like this.

if iVariable is Nothing then
...
end if
HTH,
Bueller

 

[Hylsan]

Thanks both of you!
It works like a charm now

/Hylsan

 

[JohnYingling]

Wait a minute. A variable defined As Integer can never be Nothing.

Now if you have Option Strict Off (BAD Idea) and are boxing and unboxing values with objects (another BAD idea), it is possible to have an integer "boxed" inside an object.

http://www.VBResizer.com

Forms/Controls Resizing/Tabbing

http://www.VBCompare.com

Compare Code

http://www.VBSortGen.com

Generate Sort Class in VB

http://www.Vbcompare.com/Check.Htm(1979

Check To MS)