Solved

check to see if var is initialized in c#

Posted on 2002-04-12
3
481 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
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

Want Experts Exchange at your fingertips?

With Experts Exchange’s latest app release, you can now experience our most recent features, updates, and the same community interface while on-the-go. Download our latest app release at the Android or Apple stores today!

Question has a verified solution.

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

  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
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 be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

630 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