LINQ專業查詢的WebMethod

Question

Global entity: { WorkerId , ProjId, Date } 
Worker entity: { Workerid, WorkerName } 
Project entity: { ProjId, ProjName } 
New Projects entity : { ProjId, ProjInf } 

的的WebMethod需要收到的日期，並返回：

>WorkerName 
>how many projects he has // count Project entity with WorkerId 
>how many new projects he has // count New Projects entity with ProjId, we know wich ProjId needs to be count for the worker from the Global entity 

請幫我建立這個LINQ查詢......我不能發現所有對谷歌的任何解決方案

Answer 1

這是不知道更多關於你的實體模型，我可以在想最好的：

var results = 
    objectContext.Global 
    .Where(g => g.Date == dateTimeParam) 
    .Select(
    g => 
     new 
     { 
     WorkerName = g.Worker.Name, 
     ProjectCount = g.Worker.Projects.Count(), 
     NewProjectCount = g.Worker.NewProjects.Count(), 
     });