內存不足在行XXXX

Question

任何人都可以幫助我如何解決我的asp頁面上的內存不足錯誤？即時通訊使用LINQ到SQL ..後添加數據幾個數據..像超過10行。在網格中。出現內存不足的錯誤..隨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

我嘗試了所有的我的同齡人以及這裏提供的，從GC.Collect的解決方案給我兩個解決方案，以使用後處置等LINQ的datacontext然而，錯誤不斷髮生，我再試圖刪除更新面板，我讀了一個網站，顯示瞭如何處理數據esp當一個功能重複完成時，如何可笑的更新面板。噗！內存問題消失了！

Answer 2

我從你的代碼在這裏猜測：

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

是.get()走的是一條Func<SomeType, bool>，和你正在做的是這樣的：

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

（請糾正我在這裏，如果我不正確）

但是，此操作正在使用LINQ到對象，意思是：它將每行從表格加載到客戶端並在本地進行測試。這會傷害內存，特別是如果爲每行創建不同的數據庫上下文。另外，checkmarginanalysisid()調用每行正在執行，大概在行之間不會改變。

您應該使用Expression<Func<SomeType, bool>>進行測試，該代碼將被轉換爲TSQL並在服務器上執行。您可能還需要刪除不可譯的方法，即

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

這裏說的get(Expression<Func<SomeType, bool>>)。