無法轉換AnonymousType＃1 TI的IEnumerable

Question

我宣佈我的.cs頁面模型

public class InstrumentDetails 
{ 
    public long PullNo { get; set; } 
    public string Description { get; set; } 
    public int New { get; set; } 
    public int LN { get; set; } 
    public int PR { get; set; } 
    public int Any { get; set; } 
} 

這樣的方式，我正在檢索數據後：

IEnumerable<InstrumentDetails> instrumentdetails = (from p in NemcDb.tblPulls 
    join 
    pi in NemcDb.tblPullInstruments 
    on 
    p.PullId equals pi.PullId 
    join 
    i in NemcDb.tblInstruments 
    on 
    pi.InstrumentCode equals i.InstrumentCode 
    select new 
    { 
     PullNo = p.PullNo.Value, 
     InstrumentType = i.Description, 
     New = pi.NewQuantity, 
     LN = pi.LNQuantity, 
     PR = pi.UsedQuantity, 
     Any = pi.AnyQuantity 
    }).Where(i => i.PullNo.ToString() == item); 

但它給我的錯誤

無法將 'System.Linq.IQueryable < AnonymousType＃1>' 到「System.Collections.Generic.IEnumerable <>'。一個顯式轉換存在（是否缺少強制轉換？）

我在哪裏錯了？......我無法得到它通過....請幫助。

Answer 1

答案是：

  IEnumerable<InstrumentDetails> instrumentdetails = (from p in NemcDb.tblPulls 
                  join 
                  pi in NemcDb.tblPullInstruments 
                  on 
                  p.PullId equals pi.PullId 
                  join 
                  i in NemcDb.tblInstruments 
                  on 
                  pi.InstrumentCode equals i.InstrumentCode 
                  select new InstrumentDetails 
                  { 
                   PullNo = p.PullNo.Value, 
                   InstrumentType = i.Description, 
                   New = pi.NewQuantity, 
                   LN = pi.LNQuantity, 
                   PR = pi.UsedQuantity, 
                   Any = pi.AnyQuantity 

                  }).Where(i => i.PullNo.ToString() == item).ToList(); 

    } 

我多傻啊............

Answer 2

要InstrumentDetails類型的對象，你不告訴，你創建一個匿名類型。將select new { ...更改爲select new InstrumentDetails { ...，然後還請最後調用ToList(),ToEnumerable()或ToArray()以便查詢實際運行。