Load datareader to datatable

1. public DataTable GetDataTable()
2. {
3.    DataTable dataTable = new DataTable();
4.    using (SqlConnection conn =
5.       new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString))
6.    {
7.       SqlCommand cmd = conn.CreateCommand();
8.       cmd.CommandText = "procedure_name";
9.       cmd.CommandType = CommandType.StoredProcedure;
10. 

11.       // SqlDataReader need an open conncetion, so check and open it.
12.       if (conn.State != ConnectionState.Open)
13.            conn.Open();
14. 

15.       // Read data by using Execute Reader
16.       SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
17. 

18.       //Use data table load method to load data from data reader
19.       dataTable.Load(dr);                
20.    }
21.    return dataTable;
22. }