Nullreferenceexception was unhandled by user code

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Hi Friends i get the following error ....

Null referenceexception was unhandled by user code

i have click the check box this error show (note : error show in login page not in current working page.immediately application closed but back ground worker do the work)
if checkbox clicked only error will be show .otherwise no error....
my code below.....

how to handle this error plz help me...

regards ...
sathya

Posted 7-Feb-12 20:08pm

SathyaRaju

Updated 8-Feb-12 1:34am

v5

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Al Moje 8-Feb-12 2:49am

added pre tag on code.

2 solutions

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vjdeeds · Answer 1 · 2012-02-07T20:13:00

Solution 2

Hello Sathya,

Somewhere in your code, you are assigning a null value to another variable. You need to add a try-catch block there. somewhat like this

try {
    TextBox3.text = DropDownList3.Items.FindByText(TextBox3.Text).Value
} catch (NullReferenceException ex) {
    TextBox3.text = "(none)";
}

Thanks!! Hope it help.

Posted 7-Feb-12 20:13pm

vjdeeds

Comments

Tech Code Freak 8-Feb-12 12:33pm

5up!

SayreCC · Answer 2 · 2012-02-07T20:10:00

Solution 1

Hi,

Can you post your code and where the error occurred.

Thank You

Posted 7-Feb-12 20:10pm

SayreCC