C# 连接两个表以使用嵌套集合填充viewModel

我有两个表

客户

和

账户

：

public partial class Client
{
    public Client()
    {
        this.Account = new HashSet<Account>();
        this.Doc = new HashSet<Doc>();
    }

    public int ClientId { get; set; }
    public string Name { get; set; }

    public virtual ICollection<Account> Account { get; set; }
    public virtual ICollection<Doc> Doc { get; set; }
}

账户：

我编写了以下查询：

var query = from clnt in db.Client
                        join acnt in db.Account 
                             on clnt.ClientId equals acnt.Fk_ClientId
                        select new SearchViewModel
                        {
                            Name = clnt.Name,
                            AccountNumber = //don't know what I should write here
                        };

结果应该如下所示：

我的视图模型是

SearchViewModel

：

public class SearchViewModel
{
    public string Name { get; set; }
    public IList<string> AccountNumber { get; set; }        
}

如何使用

linq

？

---

任何帮助都将不胜感激

您正在寻找的是

Groupjoin

方法。 在查询语法中，它如下所示：

var query = from clnt in db.Client
            join acnt in db.Account on clnt.ClientId equals acnt.Fk_ClientId into accounts
            select new SearchViewModel
            {
                Name = clnt.Name,
                AccountNumber = accounts.Select(account => account.Name)
            };

试试这个：

var result = db.Client.Select(client => new SearchViewModel
{
    Name = client.Name,
    AccountNumber = client.Account.Select(account => account.Name).ToList()
}).ToList();

---

伙计，你太棒了！在5分钟内接受你的答案！：）非常感谢你！

public class SearchViewModel
{
    public string Name { get; set; }
    public IList<string> AccountNumber { get; set; }        
}

List<SearchViewModel> searchVM = new List<SearchViewModel>()
{ 
   new SearchViewModel(){Name="Ben", AccountNumber = new List<string>() { "BenAccount1", 
           "BenAccount2" } }, 
   new SearchViewModel(){Name="Joseph", AccountNumber = new List<string>() {  
           "JosephAccount1", "JosephAccount2", "JosephAccount3" } },                    
};

var query = from clnt in db.Client
            join acnt in db.Account on clnt.ClientId equals acnt.Fk_ClientId into accounts
            select new SearchViewModel
            {
                Name = clnt.Name,
                AccountNumber = accounts.Select(account => account.Name)
            };

var result = db.Client.Select(client => new SearchViewModel
{
    Name = client.Name,
    AccountNumber = client.Account.Select(account => account.Name).ToList()
}).ToList();