i have made a function in class file to call store procedure to fatch data from data base, the function is written below.
 public DataTable odrsrch()
       {
           using (SqlConnection connection = new SqlConnection(GetConnectionString()))
           {
               connection.Open();
               SqlCommand com = new SqlCommand("ordersp", connection);
               com.CommandType = CommandType.StoredProcedure;
               
               SqlDataAdapter adp = new SqlDataAdapter(com);
               DataSet ds = new DataSet();
               adp.Fill(ds, "ordersp");
               connection.Close();
               return ds.Tables[0];
}
       } 
and at button i have called the mathed using class object, but i am not getting result.
protected void btnsrch_Click(object sender, EventArgs e)
       {
           ordercls oc = new ordercls();
           string srch = Convert.ToString(txtsrch.Text).Trim();
           DataTable objdt = oc.odrsrch();
           gv.DataSource = objdt;
           gv.DataBind();
       }