Pull Back Data Using A Dataset

Hello,
I am trying to pull run this sql statement but it's bombing out at the comm.ExecuteNonQuery();. ..

 

Could someone help me figure this out..

 Ex.System.Int32 bum = System.Convert.ToInt32(Request.QueryString["dum"]);

SqlConnection conn = new SqlConnection("Data Source=**********************");SqlCommand comm = new SqlCommand();

comm.Connection = conn;SqlDataAdapter myadapter = new SqlDataAdapter(comm);DataSet myset = new DataSet();

conn.Open();

 comm.CommandText = "Select * from Order_Forms where (Order_Num = " + Session["dum1"] + " ) ";

 

comm.ExecuteNonQuery();myadapter.Fill(myset, "Order_Forms");

myset.AcceptChanges();

 

Can yo usee the problem???