列表项不会删除 | 列表项不会删除

本文介绍了列表项不会删除的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个代码

列表< PurchaseMain> addList =  new  List< PurchaseMain>（）; 
列表< PurchaseMain> poRecive =  new 列表< PurchaseMain>（）; 
列表< PurchaseMain> poNewGenerate =  new  List< PurchaseMain>（）; 
 使用（InventoryEntities inventoryEntities =  new  InventoryEntities（））
 {
  var  poResult =（来自 res   inventoryEntities.PORecived_Main 
 选择  new  PurchaseMain {RecNo = res.RefNo}）。ToList< PurchaseMain> ;（）; ; 
 poRecive = poResult; 
  var  poNewResult =（ from  res  in  inventoryEntities.PONewGenerate_Main 
 选择  new  PurchaseMain {RecNo = res.RefNo}）。 ToList< PurchaseMain>（）; 
 poNewGenerate = poNewResult; 
  foreach （ var  t  in  poNewGenerate）
 {
 poRecive.Add（t）; 
} 
  var  purchaseResult =（ from  res  in  inventoryEntities.Purchase_Main 
 选择  new  PurchaseMain {RecNo = res .RecivedPO}）。ToList< PurchaseMain>（）; ; 
  var  chklist = poRecive; 
  foreach （ var  t  in  purchaseResult）
 {
  for （ int  counter =  0 ;计数器<  poRecive.Count; counter ++）
 {
  if （t.RecNo == poRecive [counter] .RecNo）
 {
 chklist.Remove（t）; 
} 
} 
  //   foreach（var rt in poRecive） 
  //   { 
 
  //  }  
} 
 addList = chklist; 
} 
  return  addList;

返回时，它包含相同的值..

解决方案

I have a code

List<PurchaseMain> addList = new List<PurchaseMain>();
           List<PurchaseMain> poRecive = new List<PurchaseMain>();
           List<PurchaseMain> poNewGenerate = new List<PurchaseMain>();
           using (InventoryEntities inventoryEntities = new InventoryEntities())
           {
               var poResult = (from res in inventoryEntities.PORecived_Main
                               select new PurchaseMain { RecNo = res.RefNo }).ToList<PurchaseMain>(); ;
               poRecive = poResult;
               var poNewResult = (from res in inventoryEntities.PONewGenerate_Main
                                  select new PurchaseMain { RecNo = res.RefNo }).ToList<PurchaseMain>();
               poNewGenerate = poNewResult;
               foreach (var t in poNewGenerate)
               {
                   poRecive.Add(t);
               }
               var purchaseResult = (from res in inventoryEntities.Purchase_Main
                                     select new PurchaseMain { RecNo = res.RecivedPO }).ToList<PurchaseMain>(); ;
               var chklist = poRecive;
               foreach (var t in purchaseResult)
               {
                   for (int counter = 0; counter < poRecive.Count; counter++)
                   {
                       if (t.RecNo == poRecive[counter].RecNo)
                       {
                           chklist.Remove(t);
                       }
                   }
                   //foreach (var rt in poRecive)
                   //{

                   //}
               }
               addList = chklist;
           }
           return addList;

when it return, it contain same value..

解决方案

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