Stack Overflow Exception

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Hi,

When I try to create object of a form, I got the above error during run.
An unhandled exception of type 'System.StackOverflowException' occurred in Test.exe

C#

public Form5 fg = new Form5();

Posted 18-Aug-15 23:40pm

Member 10994712

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phil.o 19-Aug-15 5:51am

Please improve your question and show us the code in the Form5 class constructor.

DamithSL 19-Aug-15 5:51am

what is the full exception?

F-ES Sitecore 19-Aug-15 6:08am

Your code is in an infinite loop, you'll need to step through the code using the debugger to try and find where the recursion is happening, as already said we can't step through the code for you. A common cause of this is code like

private string myVar;

public string MyVar
{
get
{
return MyVar; // typo here, it should be myVar
}
}

phil.o 19-Aug-15 6:12am

Your example would trigger an error at compile time, not run time.

F-ES Sitecore 19-Aug-15 6:15am

Nope, it's perfectly valid. I've generated many SO situations myself from this kind of fat-fingered programming.

Member 10994712 19-Aug-15 6:31am

Error occurring at the following line
public string ConString =
"Database=abc ;Data Source=(local)\\SQLEXPRESS;Integrated Security=True";
SqlConnection con = new SqlConnection();//error
public int rrr;
public PROGRAMS P;
public Filter ft;
public Form1 f1;
public Form1 f2;
public Test ts;
public Form5 fg = new Form5();

CPallini 19-Aug-15 6:51am

Please update your soulution, posting also the Form5 constructor code.

Philippe Mori 19-Aug-15 12:59pm

Just look the call stack when the exception occurs. That error and NullReferenceException are among the easiest to find...

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OriginalGriff · Answer 1 · 2015-08-18T23:59:00

A stack overflow error normally occurs when you have direct or indirect recursion:
So look at your Form5 constructor and see what it does. If it doesn't do much, then start looking at the Form5 fields and properties - somewhere, the class is calling a method that causes the Form5 instance to be created again, or a property setter is causing the property value to be changed.

If it's not obvious, then put a breakpoint on the first line of the constructor - if it gets hit, then you need to start stepping through the constructor code looking for the recursion, if it isn't, then it's probably a field initialisation that is doing it.

We can't do that for you - we can't run your code!