Object reference not set to an instance of an object.

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C#

   DataTable dt_GHide = (DataTable)ViewState["GdvVal"];
        if (dt_GHide.Rows.Count > 0)
        {
            for (int i = 0; i < dt_GHide.Rows.Count; i++)
            {

string itemm1 = DataBinder.Eval(grdSale.Rows[i].DataItem, "item1").ToString();  // Getting error
}
}

Any suggestion really appreciate !

Posted 17-Jun-13 0:59am

Mas11

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Thanks7872 17-Jun-13 7:04am

Check whether ViewState["GdvVal"] is null before this line:

DataTable dt_GHide = (DataTable)ViewState["GdvVal"];

Mahesh Bailwal 17-Jun-13 7:04am

Can you please explain what are you trying to do? As never used DataBinder.Eval this way.

E.F. Nijboer 17-Jun-13 7:10am

Set a breakpoint, step through the code and swatch the variables to see what happens.

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OriginalGriff · Answer 1 · 2013-06-17T01:11:00

You probably didn't mean to use grdSale.Rows[i] inside your loop - which would make sense given that the loop is bounded by the length of a totally different object.

Probably, you meant to say:

C#

string itemm1 = DataBinder.Eval(dt_GHide.Rows[i].DataItem, "item1").ToString();

instead of:

C#

string itemm1 = DataBinder.Eval(grdSale.Rows[i].DataItem, "item1").ToString();

Chintan Desai1988 · Answer 2 · 2013-06-18T00:41:00

Please check out viewstate value and if ViewState have value then please check out the value is available or not in "grdSale" dataset by applying the condition:
if(grdSale.rows.count !=0)
{
//Write code here
string itemm1 = DataBinder.Eval(grdSale.Rows[i].DataItem, "item1").ToString();
}

Object reference not set to an instance of an object.

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