Object reference not set to an instance of an object.

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I made a dynamic website but always getting such error like object reference is not set to an instance of an object . I don't understand from where these error come..I am using session to get value.. Please help me..

What I have tried:

lblSales.Text = Session["adminhome"].ToString();

Posted 14-Jan-18 17:57pm

ADI@345

Updated 14-Jan-18 18:41pm

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2 solutions

Solution 1

Easy. You're code is assuming that something is returned by Session["adminhome"] when nothing, null, was returned. You can't call .ToString() on a null object.

The thing you have to do now is figure out why is there nothing being returned by the call to Session["adminhome"]. Either you have to handle the case where that session value may be null or figure out why that value isn't being set in the first place when you expect it to be set.

Posted 14-Jan-18 18:01pm

Dave Kreskowiak

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ADI@345 15-Jan-18 0:07am

Actually what happen, my code work fine on my PC, but if run on another PC,i face this error not always , but sometime..Initially session is not null, i send name and email in session.

Dave Kreskowiak 15-Jan-18 0:57am

That doesn't change my answer. From what you posted, what I said is all that can be said. There is no way for anyone but you to figure out why it's returning null.

We simply don't have anywhere enough information and code to go on. The quality of the answer you get in a forum is directly dictated by the quality of the question you ask.

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Altaf Ansari · Accepted Answer · 2018-01-14T18:41:00

Solution 2

You are getting the session value null..
please validate session value before assigning it..

if(Session["adminhome"] != null)
{
  lblSales.Text = Session["adminhome"].ToString();
}

Posted 14-Jan-18 18:41pm

Altaf Ansari