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c#dapper

Sql Query with Dapper returns an empty result, but the request result from profiler is not empty


I have the SQL Query made with dapper, and its return an empty result. But if i run the SQL Profiler and execute request that i see there the result would be not empty.

Here is my code

    public class Parameters
    {
        public DateTime? SinceDate { get; set; }
        public DateTime? UntilDate { get; set; }
        public byte NetworkId { get; set; } = 7;
    }

    var parameters = new Parameters()
    {
        SinceDate = startDate,
        UntilDate = endDate,
        NetworkId = networkId,
    };

    DynamicParameters requestParameters = new DynamicParameters();
    requestParameters .Add("@sinceDateFilter", parameters.SinceDate, DbType.DateTime);
    requestParameters .Add("@untilDateFilter", parameters.UntilDate, DbType.DateTime);
    requestParameters .Add("@networkId", parameters.networkId, DbType.Byte);

   using (var secondConn = new SqlConnection(ConnectionString))
   {
       var query = secondConn.Query<ReportRow>(
       "[dbo].[GET_Report] @sinceDateFilter, @untilDateFilter, @NetworkId",
       requestParameters,
       commandTimeout: 500
       );
       Groups = query.ToList();
   }


    public class ReportRow
    {
        public string Network { get; set; }
        public ulong Clicks { get; set; }
        public decimal Profit { get; set; }
    }

In the debugger i see that my "Groups" is empty, but if i run the sql profiler i see the request made by this code is

exec sp_executesql N'[dbo].[GET_Report] @sinceDateFilter, @untilDateFilter, @networkId',N'@sinceDateFilter datetime,@untilDateFilter datetime, @networkId tinyint',@sinceDateFilter='2019-04-01 00:00:00',@untilDateFilter='2019-04-02 00:00:00',@networkId=7

And if i execute this from management studio i see the table with data:

+----------+--------+--------+
| Network  | Clicks | Profit |
+----------+--------+--------+
| Network1 |  38835 | 0.45   |
| Network2 |  38835 | 0.35   |
+----------+--------+--------+

Solution

  • If you want to execute by stored procedure.

    You can try to set commandType parameter.

    Setting with CommandType.StoredProcedure

    using (var secondConn = new SqlConnection(ConnectionString))
    {
       var query = secondConn.Query<ReportRow>(
       "[dbo].[GET_Report]",
       requestParameters,
       commandTimeout: 500, 
       commandType: CommandType.StoredProcedure
       );
       Groups = query.ToList();
    }