how to bind ASP.Net DropDownList control in EditItemTemplate of GridView on edit(imagebutton)click

Question

I have requirement to bind ASP.Net DropDownList control in EditItemTemplate of GridView. I have a edit imagebutton with commandname=\"Edit\"also dropdown needs to be binded

Answer 1

protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e) {

    using (SqlConnection con = new SqlConnection(ConnectionString))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT GatePassNo,PurposeOfVisit FROM VisitorList"))
        {
            cmd.CommandType = CommandType.Text;
            cmd.Connection = con;
            con.Open();
            DropDownList ddlpurposeofvisit = (DropDownList)e.Row.FindControl("ddlpurposeofvisit");
            ddlpurposeofvisit.DataSource = cmd.ExecuteReader();
            ddlpurposeofvisit.DataTextField = "PurposeOfVisit";
            ddlpurposeofvisit.DataValueField = "GatePassNo";
            ddlpurposeofvisit.DataBind();
            con.Close();
        }
    }

}