Adomd_Connect_sample.cs

using (var conn = new AdomdConnection(connectionString))
{
    conn.Open();
    var commandText = @"SELECT
                        {
                        [Measures].[Gains Period],
                        [Measures].[Gains YTD],
                        [Measures].[Amount]
                        } ON COLUMNS,
                        [Valuation Dates Accumulated].[Hierarchy].[Year].Members ON ROWS
                        FROM Accumulated
                        Where ({ @PortfolioId })";
    var data = conn.Query<MyResultDTO>(commandText,
        new AdomdParameterMultipleValues<int>()
        {
            ParameterName = "@PortfolioId",
            MemberName = "[Portfolios].[Port Code]",
            Values = new List<int>() { 282, 185 }
        }
    );
    conn.Close();
}