C# 将此SQL语句转换为LINQ

我对linq非常陌生，在linq中高效地编写此查询时遇到了一些困难

SELECT ID, UniqueID, RouteHeaderID, RouteObjectState, OriginalRouteUniqueID
FROM  dbo.MeterReadingOrderERPRouteCreateResponses
WHERE (ID NOT IN (SELECT MeterReadingOrderERPRouteCreateResponseID
                  FROM  dbo.Tasks
                  WHERE (TaskType = 'MeterReading')))

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需要帮忙吗？我已从尝试此解决方案，但出现以下错误：无法创建“TaskManager.Models.Task”类型的常量值。在此上下文中只支持基本类型“如Int32、String和Guid”。

我只是在脑子里想了想，但可能是这样吗

var meterReadingTasks = from task in context.Tasks
                       where task.TaskType == "MeterReading"
                       select task.MeterReadingOrderERPRouteCreateResponseID;

var results = from m in context.MeterReadingOrderERPRouteCreateResponses
              where !meterReadingTasks.Contains(m.Id)
              select new { m.ID, m.UniqueID, m.RouteHeaderID, m.RouteObjectState, m.OriginalRouteUniqueID};

var subQuery = from t in Tasks
               where t.TaskType == "MeterReading"
               select t.MeterReadingOrderERPRouteCreateResponseID

var query = from m in MeterReadingOrderERPRouteCreateResponses
            where !subQuery.Contains(m.ID)
            select new
            {
                ID = m.ID,
                UniqueID = m.UniqueID,
                RouteHeaderID = m.RouteHeaderID,
                RouteObjectState = m.RouteObjectState,
                OriginalRouteUniqueID = m.OriginalRouteUniqueID
            };

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只是在我的头顶上做这个，但也许是这个

var subQuery = from t in Tasks
               where t.TaskType == "MeterReading"
               select t.MeterReadingOrderERPRouteCreateResponseID

var query = from m in MeterReadingOrderERPRouteCreateResponses
            where !subQuery.Contains(m.ID)
            select new
            {
                ID = m.ID,
                UniqueID = m.UniqueID,
                RouteHeaderID = m.RouteHeaderID,
                RouteObjectState = m.RouteObjectState,
                OriginalRouteUniqueID = m.OriginalRouteUniqueID
            };

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嗨，巴拉R.试过了，效果很好。感谢您的快速回答。Hi Bala R.试过了，效果非常好。谢谢你的快速回答