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Problem with gridview dynamically generated columns and textboxes

Posted By:      Posted Date: October 04, 2010    Points: 0   Category :ASP.Net

Hi All,

 I am using asp.net/c# application. In my application, I have a gridview.

<asp:GridView id ="gv_QuestionList" runat="server"> </asp:GridView>

In Code Behind, I created dynamic textboxes and DropDownLists on RowDataBound.

protected void gv_QuestionList_RowDataBound(object sender, GridViewRowEventArgs e)
            if (e.Row.RowType == DataControlRowType.DataRow)

                if (ObjQMDO.QuestionType == "TextBox")
                    TextBox txt = new TextBox();
                else if (ObjQMDO.QuestionType == "Dropdownlist")
                    DropDownList drp = new DropDownList();
                    drp.DataSource = ObjQMDA.GetQuesTypeValues(QUES_ID);
                    drp.DataTextField = "QTYV_QuesTypeValue";
                    drp.DataValueField = "QTYV_ID";
                    drp.Items.Insert(0, new ListItem("Select One", "0"));

                else if (ObjQMDO.QuestionType == "Radio")

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