Solved

check to see if var is initialized in c#

Posted on 2002-04-12
3
454 Views
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?
0
Comment
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.
}
0
 
LVL 23

Accepted Solution

by:
naveenkohli earned 50 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.
0
 
LVL 3

Author Comment

by:jrspano
ID: 6951335
thanks that worked.  don't know why I didn't do that to start with???
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.

896 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now