NullReferenceException in my project

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I have card game , and I am working on it and sometimes I get stumbled, but after awhile I figure out what the problem is, but in this case I am just helpless.

I have to post the link to my file, otherwise the code will be too long, because there's a lot of different classes.

This is is the link

http://www.4shared.com/rar/AQvIkAQr/LetItRide.html?refurl=d1url[^]

What you have to do to get the error is click Start button, then click 25-500 bet range button, and then click on any chip button and after that click Deal button, and that's when you should get the exception.

Posted 23-Feb-12 16:27pm

Alexander Alekseyevich Fedoseev

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Sergey Alexandrovich Kryukov 23-Feb-12 22:52pm

This is the easiest exception to find out the problem. Just run it under Debugger. If something is not clear, ask more specific question.
--SA

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Varun Sareen · Answer 1 · 2012-02-23T17:09:00

you may be using some variable in your code which is null and its not handled properly means the null exception handling. Do debugging and check. Thess links will be helpful to you:-

http://www.csharp-station.com/Tutorials/lesson15.aspx[^]

http://msdn.microsoft.com/en-us/library/ms173163.aspx[^]

44,500,000 results on null exception handling c#

krumia · Answer 2 · 2012-02-23T21:28:00

NullReferenceException can happen when you call a method on a null variable. For example:

C#

string s = null;
if (s.equals(...)) // NullReferenceException is thrown here
...

In the example, you have called equals method in a string variable, but the variable actually doesn't point to any object. It's null.

As SAKryukov has wrote in his comment, just debug it, go step by step, and find out which variable is set to null.

See the stack-trace to identify the point which the exception is thrown. Then you will have to check just few lines around that point.

NullReferenceException in my project

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