Report Viewer X Dapper

Question

I\'m feeding a ReportDataSource with a query using Dapper. However, I have an empty report, even with an IEnumerable loaded data. When you spend a

Answer 1

As I could not find another way to feed my ReportViewer to a query Dapper.Query then downloaded the source and added the code below.

    #region CODTEC SISTEMAS
    /// 

    /// Return a typed list of objects, reader is closed after the call
    /// 
    public static DataTable Query(this IDbConnection cnn, string sql, object param, IDbTransaction transaction, int? commandTimeout, CommandType? commandType)
    {
        var identity = new Identity(sql, commandType, cnn, typeof(DapperRow), param == null ? null : param.GetType(), null);
        var info = GetCacheInfo(identity);

        IDbCommand cmd = null;
        IDataReader reader = null;

        bool wasClosed = cnn.State == ConnectionState.Closed;
        try
        {
            cmd = SetupCommand(cnn, transaction, sql, info.ParamReader, param, commandTimeout, commandType);

            if (wasClosed) cnn.Open();
            reader = cmd.ExecuteReader(wasClosed ? CommandBehavior.CloseConnection : CommandBehavior.Default);
            wasClosed = false; // *if* the connection was closed and we got this far, then we now have a reader
            // with the CloseConnection flag, so the reader will deal with the connection; we
            // still need something in the "finally" to ensure that broken SQL still results
            // in the connection closing itself

            DataTable dt = new DataTable();
            dt.Load(reader);


            // happy path; close the reader cleanly - no
            // need for "Cancel" etc
            reader.Dispose();
            reader = null;

            return dt;
        }
        finally
        {
            if (reader != null)
            {
                if (!reader.IsClosed) try { cmd.Cancel(); }
                    catch { /* don't spoil the existing exception */ }
                reader.Dispose();
            }
            if (wasClosed) cnn.Close();
            if (cmd != null) cmd.Dispose();
        }
    }
    #endregion