C# Sql easy help

if i have the following code, how do i know if the transaction was actually successful, so basically where in this code can i write TRANSACTION SUCCESFUL?

try
{
//Open up the connection
conn.Open();
//Setup the Transaction
trans = conn.BeginTransaction();
//First query in transaction
pre_query = "Delete from Menu where spec_name="
+ "'"
+ spec_name_array[i].Text.ToString()
+ "'" ;
//Second query in transaction
query = "INSERT into Menu VALUES ('"
+ Calendar1.SelectedDate
+"','"
+ spec_name_array[i].Text.ToString()
+"','"
+ spec_desc_array[i].Text.ToString()
+"','"
+spec_price_array[i].Text.ToString()
+"',1)";
SqlCommand comm = new SqlCommand(pre_query,conn);
//Setup the command to handle transaction
comm.Transaction = trans;
//Execute first query
comm.ExecuteNonQuery();
//Add in second query
comm.CommandText = query;
//Execute second query
comm.ExecuteNonQuery();
trans.Commit();
}
catch(SqlException ex)
{
com_label.Text = "Submission Not complete, did you forget the date or something else?";
//Undo all queries
trans.Rollback();
}
finally
{
conn.Close();
}

make some bool variable
and set it to false in catch
otherwise it is successfull.

Personally I suggest you to do the whole thing in the stored procedure