获取“指定演员表无效”。 MS VS 2013中的错误

Question

您好我正在使用MSSQL，MS VS 2013，C＃创建一个Web服务，到目前为止一切进展顺利

c_array[10]

作为简单SQL查询运行时的查询执行正常但在代码中结果为

List<Company_Invoices> customers = new List<Company_Invoices>();
    var json = "";
    var result = dc.ExecuteQuery<Company_Invoices>(@"SELECT top 10 
      sih.[No_],
      sih.[External Document No_], 
      sih.[Due Date], 
      sih.[Order Date], 
      sih.[Posting Date],
      sih.[Shipment Date], 
      cus.[Id] as 'Sell To Customer Id',
      cust.[Id] as 'Bill To Customer Id', 
      sih.[Currency Code], 
      sih.[Salesperson Code],
      sih.[Location Code], 
      cle.[Open], 
      cle.[Sales (LCY)], 
      (SELECT SUM([Amount (LCY)]) AS Expr1 
          FROM dbo.[Company$Detailed Cust_ Ledg_ Entry] AS d 
          WHERE  ([Cust_ Ledger Entry No_] = cle.[Entry No_])
             AND ([Entry Type] = 1) AND ([Posting Date] = cle.[Posting Date]))  
          as 'Sum Amount LCY',
      (SELECT SUM([Amount (LCY)]) AS Expr1 
          FROM dbo.[Company$Detailed Cust_ Ledg_ Entry] AS dcle 
          WHERE ([Cust_ Ledger Entry No_] = cle.[Entry No_])) as 'Sum Amount LCY2' 
      FROM dbo.[Company$Sales Invoice Header] AS sih 
      LEFT OUTER JOIN dbo.[Company$Cust_ Ledger Entry] AS cle 
          ON cle.[Document No_] = sih.No_ 
          AND cle.[Document Type] = 2 
      LEFT OUTER JOIN dbo.[Company$Customer] AS cus 
          ON sih.[Sell-to Customer No_] = cus.[No_] 
      LEFT OUTER JOIN dbo.[Company$Customer] AS cust 
          ON sih.[Bill-to Customer No_] = cust.[No_]");

    customers = result.ToList<Company_Invoices>();
    json = jss.Serialize(customers);
    return json;

有什么问题？问，因为我做了几个类似的查询，他们工作得很好，但这个并没有太大的不同。