troubleshooting Question

C#: adding field name to List of SQL Results

Avatar of EricTaylor
EricTaylor asked on
C#.NET Programming
5 Comments1 Solution182 ViewsLast Modified:
I've written a piece to execute a SQL query and put the results into a List<object> where each record contains the fields of data from each SQL record returned. However, in my results, I no longer have the SQL field names that I can see but only have a dozen numbered fields. Is there a relatively easy way to keep the field names with the corresponding data? What I'd like to be able to do when dealing with the list is to interact with "JobID" rather than merely column 1, etc. But I've tried to write this in a generic way because this method will have to deal with many different SQL queries of varying complexity... returning anything from a single record to thousands (mostly in the 0 to several hundred range).

If you answer, please be very basic. While I've been programming for a while (almost all Delphi), I've only been working with C# for less than a week. I'm still very much in the "pirate" stage... looking for various answers online and "borrowing" and modifying to fit what I need to do. So while what I've written here works, it's is beyond my comfort level at this point. If you answer assuming that I can just pop off what's here, your answer will be over my head. (Generic suggestions to make this better or more efficient are also welcome.)

Anyway, here's what I've got so far.
    public class QueryResults : List<object[]>
    {
        public void GetData(string SQL, params object[] RequestParams)
        {
            using (FbConnection ibCon = new FbConnection(DBConnection.CreateConnString()))
            {
                try
                {
                    FbCommand cmdFBQuery = new FbCommand();

                    cmdFBQuery.Connection = ibCon;
                    cmdFBQuery.CommandType = CommandType.Text;
                    cmdFBQuery.CommandText = SQL;
                    int i = 0;
                    foreach (object obj in RequestParams)
                    {
                        cmdFBQuery.Parameters.Add(new FbParameter(i++.ToString(), obj));
                    }

                    ibCon.Open();
                    using (var reader = cmdFBQuery.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            var columns = new object[reader.FieldCount];
                            reader.GetValues(columns);
                            this.Add(columns);
                        }
                    }
                }
                catch (Exception ex)
                {
                    // handle error here
                }
            }
        }
    }
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