内存不足在行XXXX

Question

任何人都可以帮助我如何解决我的asp页面上的内存不足错误？即时通讯使用LINQ到SQL ..后添加数据几个数据..像超过10行。在网格中。出现内存不足的错误..随函附上是我的外接功能..

public ServiceDetail checkservicedetailid() 
{ 
    string ServiceName = ViewState["Tab"].ToString(); 
    ServiceDetail checkservicedetailid = ServiceDetails_worker.get(a => a.ServiceName == ServiceName && a.MarginAnalysisID == checkmarginanalysisid().MarginAnalysisID).SingleOrDefault(); 
    return checkservicedetailid; 
} 

public IEnumerable<ServiceDetail> get(Expression<Func<ServiceDetail, Boolean>> express)  
{ 
    return ServiceDetailsDB.ServiceDetails.Where(express); 
} 

protected void btnSaveEmptyOC_Click(object sender, EventArgs e) 
{ 
    try 
    { 
     if (checkservicedetailid() != null) 
     { 
      CashExpense tblCashExpenses = new CashExpense(); 
      Guid CashExpensesID = Guid.NewGuid(); 

      tblCashExpenses.CashExpensesID = CashExpensesID; 
      tblCashExpenses.ServiceDetailsID = checkservicedetailid().ServiceDetailsID; 
      tblCashExpenses.Description = txtDescriptionEmptyOC.Text; 
      tblCashExpenses.Quantity = Decimal.Parse(txtQTYEmptyOC.Text); 
      tblCashExpenses.UnitCost = Decimal.Parse(txtUnitCostEmptyOC.Text); 
      tblCashExpenses.CreatedBy = User.Identity.Name; 
      tblCashExpenses.DateCreated = DateTime.Now; 
      tblCashExpenses.CashExpensesTypeID = "OTHER"; 

      CashExpenses_worker.insert(tblCashExpenses); 
      CashExpenses_worker.submit(); 
      //Clear items after saving 
      txtDescriptionEmptyOC.Text = ""; 
      txtQTYEmptyOC.Text = ""; 
      txtUnitCostEmptyOC.Text = ""; 
      ValidationMessage.ShowValidationMessage(MessageCenter.CashExpenseMaintenace.InsertOC2, "SaveEmptyOC", this.Page); 
      MyAuditProvider.Insert(this.GetType().ToString(), ViewState["MarginAnalysisID"].ToString(), MessageCenter.Mode.ADD, MessageCenter.CashExpenseMaintenace.InsertOC2, Page.Request, User); 
      divOtherCost.Visible = false; 
      grd_othercost.Visible = true; 
      btnaddothercost.Visible = true; 
     } 
     else 
     { 
      //Displays a Message on the Validation Summary (Service Id does not exist) 
      ValidationMessage.ShowValidationMessage(MessageCenter.CashExpenseMaintenace.SaveServiceDetailOC, "SaveEmptyOC", this.Page); 
     } 
    } 
    catch 
    { 
     //Displays a Message on the Validation Summary (Error on Saving) 
     ValidationMessage.ShowValidationMessage(MessageCenter.CashExpenseMaintenace.InsertOCError, "SaveEmptyOC", this.Page); 
    } 

    finally 
    { 
     //Rebinds the Grid 
     populategrd_othercost(); 
    } 
} 

Answer 1

我尝试了所有的我的同龄人以及这里提供的，从GC.Collect的解决方案给我两个解决方案，以使用后处置等LINQ的datacontext然而，错误不断发生，我再试图删除更新面板，我读了一个网站，显示了如何处理数据esp当一个功能重复完成时，如何可笑的更新面板。噗！内存问题消失了！

Answer 2

我从你的代码在这里猜测：

ServiceDetail checkservicedetailid = ServiceDetails_worker.get(
    a => a.ServiceName == ServiceName && 
     a.MarginAnalysisID == checkmarginanalysisid().MarginAnalysisID 
).SingleOrDefault(); 

是.get()走的是一条Func<SomeType, bool>，和你正在做的是这样的：

var row = dbCtx.SomeTable.Where(predicate); 

（请纠正我在这里，如果我不正确）

但是，此操作正在使用LINQ到对象，意思是：它将每行从表格加载到客户端并在本地进行测试。这会伤害内存，特别是如果为每行创建不同的数据库上下文。另外，checkmarginanalysisid()调用每行正在执行，大概在行之间不会改变。

您应该使用Expression<Func<SomeType, bool>>进行测试，该代码将被转换为TSQL并在服务器上执行。您可能还需要删除不可译的方法，即

var marginAnalysisId = checkmarginanalysisid().MarginAnalysisID; 
ServiceDetail checkservicedetailid = ServiceDetails_worker.get(
    a => a.ServiceName == ServiceName && 
     a.MarginAnalysisID == marginAnalysisId 
).SingleOrDefault(); 

这里说的get(Expression<Func<SomeType, bool>>)。