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check to see if var is initialized in c#

Posted on 2002-04-12
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Last Modified: 2006-11-17
I didn't see a C# category, so I'll ask here.
If I have a variable in c# as an xmldocument, I want to know if it has been initialized or not with a constructor.  in the debug window it is set to nothing until it is initialized.  How do you check for that in code?
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Question by:jrspano
3 Comments
 

Expert Comment

by:rtenhove
ID: 6938123
You'd probably do better in the Java forum, since C# is more closely related to Java than C/C++.

At a guess, I'd say you want something like:

if (var == null)
{
    // ... whatever.
}
else
{
    // safe to use var.
}
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Accepted Solution

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naveenkohli earned 200 total points
ID: 6938148
every variable that is of type class, is initialized to null unless you explictly initialize it caling new. XmlDocument object will also be null. so as rtenhove said... check if it == null or not.
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Author Comment

by:jrspano
ID: 6951335
thanks that worked.  don't know why I didn't do that to start with???
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