Pop Up With Click Anything On Grid

protected void fdhgfhgf(object sender, GridViewCommandEventArgs e)
   {
       try
       {
           int index = Convert.ToInt32(e.CommandArgument);
       GridViewRow row = GridView2.Rows[index];

           lblref.Text = row.Cells[1].Text;


           Session["refid"] = lblref.Text;
           SqlCommand cmd7 = new SqlCommand();
           cmd7.CommandText = "select_manpower_HOD";
           cmd7.CommandType = CommandType.StoredProcedure;
           cmd7.Connection = Db.GetConnection();
           cmd7.Parameters.AddWithValue("@RefrenceId",lblref.Text);
           SqlDataReader dr7 = cmd7.ExecuteReader();
           if (dr7.Read())
           {

               ddldeptt.Text= dr7["Department"].ToString();
               txtNoOfvacancies.Text = dr7["NoofVacancies"].ToString();
               txtDesignation.Text = dr7["Designation"].ToString();
               txtLocation.Text = dr7["Location"].ToString();
               txtExperience.Text = dr7["CoreExperience"].ToString();
               txtExpectedCTC.Text = dr7["ExpectedCTCAnnum"].ToString();
               txtMinExp.Text = dr7["Experiencemin"].ToString();
              txtMaxExp.Text = dr7["Experiencemax"].ToString();
              txtAge.Text= dr7["Age"].ToString();
               txtAcademicQuali.Text = dr7["AcademicQualification"].ToString();
              txtProfession.Text= dr7["ProfessionalQualification"].ToString();
               txtnature.Text = dr7["NatureOfVacancy"].ToString();
               txtImmdiateSuper.Text = dr7["ImmediateSuperior"].ToString();



           }
           cmd7.Connection.Close();
           this.modal1.Show();
       }
       catch (Exception ex)
       {
           Response.Write(ex.ToString());
       }

   }