Object reference not set to an instance of an object.

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hi all :)

I have a problem, when I try to insert new item from grid view to my table

I got this problem

how can I fix it ? :\

http://msasoftware.net/Hamza/Pics/Programmingproblems/porblem9878658645.png[^]

can you help me please

Posted 24-Sep-11 4:51am

Msaya

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Ali Al Omairi(Abu AlHassan) 24-Sep-11 11:11am

Please send the markups of your grid.

1 solution

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Simon Bang Terkildsen · Accepted Answer · 2011-09-24T05:16:00

Solution 1

Make sure none of the below is null and you've fixed the error.
0) insertItem
1) insertItem["User_Name"]
2) insertItem["User_Name"].FindControl("User_Name02")
3) insertItem["User_Name"].FindControl("User_Name02") as RadTextBox

note 3) is null if the result from 2) is null or not a RadTextBox. and it doesn't make much sense that you use as, as you do not check for null, you should explicitly cast instead.

Time to start debugging or provide more details as Ali requests. I suggest you debug this yourself, as a null reference exception is the most simple and common exception poeple encounter and the most easy to fix.

Posted 24-Sep-11 5:16am

Simon Bang Terkildsen

Comments

RaisKazi 24-Sep-11 11:19am

My 5!

Simon Bang Terkildsen 24-Sep-11 11:32am

Thank you, RaisKazi

Ali Al Omairi(Abu AlHassan) 24-Sep-11 11:42am

Complete Answer, 5+.
But why Beginning from zero(its not an array).

Simon Bang Terkildsen 24-Sep-11 11:48am

There is no rule saying a numbered list can't be zero-based :)
Thank you for your vote.

Sergey Alexandrovich Kryukov 25-Sep-11 3:45am

All correct, my 5.
--SA