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I am loading data from database. This error is shown for line

DropDownList1.SelectedItem.Text = dtt.Rows[0]["Country"].ToString();

protected void Page_Load(object sender, EventArgs e)


       protected void loadprofiledata1()
           SqlConnection con = new SqlConnection("Data Source=jayraj-pc\\sqlexpress;Initial Catalog=Internship;Integrated Security=True;Pooling=False");

           SqlCommand cmd3 = new SqlCommand("select * from Users where UserID=" + Convert.ToInt16(Session["UserID"].ToString()), con);

           SqlDataAdapter daa = new SqlDataAdapter(cmd3);
           DataTable dtt = new DataTable();
           if (dtt.Rows.Count > 0)
               firstname.Text = dtt.Rows[0]["FirstName"].ToString();
               lastname.Text = dtt.Rows[0]["LastName"].ToString();
               username.Text = dtt.Rows[0]["UserName"].ToString();
               gender.SelectedItem.Text = dtt.Rows[0]["Gender"].ToString();
               email.Text = dtt.Rows[0]["EmailAddress"].ToString();
               dob.Text = dtt.Rows[0]["DOB"].ToString();
               mobile.Text = dtt.Rows[0]["MobileNo"].ToString();
               nationality.Text = dtt.Rows[0]["Nationality"].ToString();
               address.Text = dtt.Rows[0]["Address"].ToString();
               DropDownList1.SelectedItem.Text = dtt.Rows[0]["Country"].ToString();
               DropDownList2.SelectedItem.Text = dtt.Rows[0]["State"].ToString();
               DropDownList3.SelectedItem.Text = dtt.Rows[0]["City"].ToString();
               collegename.Text = dtt.Rows[0]["College"].ToString();
               degree.SelectedItem.Text = dtt.Rows[0]["Degree"].ToString();
               seconddegree.SelectedItem.Text = dtt.Rows[0]["SecondDegree"].ToString();
               branch1.SelectedItem.Text = dtt.Rows[0]["Branch"].ToString();
               startyear.SelectedItem.Text = dtt.Rows[0]["StartYear"].ToString();
               endyear.SelectedItem.Text = dtt.Rows[0]["ExpectedPassOutYear"].ToString();

Thanks7872 5-May-14 2:26am
See this: Object reference not set to an instance of an object
Its a well explained answer to this error.
Sivaraman Dhamodharan 5-May-14 2:43am
Check the spelling for Country in the database. I mean check that the column name is right.
dtt: is valid
Rows[0] also valid.
Only suspect is misspelled column name

well check if dropdown1 has any selecteditem or not,

dropdown1.selecteditem.text = dtt.Rows[0]["Country"].ToString();

but i would suggest you to write

dropdown1.selectedvalue = dtt.Rows[0]["Country"].ToString(); 

instead of selecteditem.text
jayraj86 5-May-14 3:39am
Same thing i am loading in other page using same code and it works perfectly on other page
this is due to null value in


check dtt ,by compile step by step ,hover the mouse in dtt and take full view of that table and check the value ["Country"]

OR check the name ["Country"] is same as in DB
jayraj86 5-May-14 3:39am
Same thing i am loading in other page using same code and it works perfectly on other page

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