Please help me in my code

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hello sir,
I want to ask that I have to call values that is saved in my backend I have to call them in a dropdown that is inside an itemtemplate field in gridview

I m using this code

C#

protected void grdDaily_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        DataTable dt = new DataTable();
        dt = DelayworkReport.fillProjects();
        ListItem lst = new ListItem("Select", "0");
        DropDownList list = (DropDownList)grdDaily.FindControl("ddlProject");
        list.DataTextField = "ProjectABR";
        list.DataValueField = "ProjectId";
        list.DataSource = dt;
        list.DataBind();
        list.Items.Insert(0, lst);
    }

When I debug this code using F10 the debugging stop at

list.DataTextField = "ProjectABR";

the error comes of object Reference not set to an instance of the object Please guide me in my code

Posted 30-Nov-11 19:55pm

Prashant Srivastava LKO

Updated 30-Nov-11 20:01pm

Mehdi Gholam

v2

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Sergey Alexandrovich Kryukov 1-Dec-11 2:08am

What does it mean "call values"? You call only methods, functions, procedures...
--SA

Sergey Alexandrovich Kryukov 1-Dec-11 2:09am

Where is your exception information?
--SA

Sergey Alexandrovich Kryukov 1-Dec-11 2:14am

I see. Is the debugger broken?
--SA

Prashant Srivastava LKO 1-Dec-11 5:30am

Yes sir I solved by myself this line is wrong

DropDownList list = (DropDownList)grdDaily.FindControl("ddlProject");
agai I debug I found the exception and understand its meaning

Sergey Alexandrovich Kryukov 19-Dec-11 23:54pm

Great. Debugger is a good thing.
Good luck,
--SA

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Prashant Srivastava LKO · Answer 1 · 2011-11-30T23:29:00

C#

 protected void grdDaily_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            //Projects values in drodpown
            dt = DelayworkReport.fillProjects();
            ListItem lst = new ListItem("Select", "0");
            DropDownList list = (DropDownList)e.Row.Cells[5].FindControl("ddlProject");
            list.DataTextField = "ProjectABR";
            list.DataValueField = "ProjectId";
            list.DataSource = dt;
            list.DataBind();
            list.AutoPostBack = true;
            list.Items.Insert(0, lst);
}
}

I have solved by myself the above question I asked thank u for help

Sergey Alexandrovich Kryukov · Answer 2 · 2011-11-30T20:13:00

Not again! Is it a problem to run it under Debugger and see what's going on. If your report is correct, your call to FindControl returned null. A note for you: using FindControl for regular UI development is a sign of incorrect or bad design. Normally, you never need to search for any controls. All your controls are accessible to you, why searching. Also, using any immediate constants like your "dllProject" is really bad. If you misspell it, compiler cannot help to find a problem. Everything is wrong from the very beginning; if you fix this bug, some other will haunt you. You need to review the code design.

—SA

Please help me in my code

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