Try this ,
SqlDataAdapter sqlcom0 = new SqlDataAdapter("select no_of_train from transshipment where id_transshipment in (1,2)", myConnection);
DataSet ds0 = new DataSet();
sqlcom0.Fill(ds0, "transshipment");
gd_transshipment.DataSource = ds0.Tables["transshipment"].DefaultView;
gd_transshipment.DataBind();