Question

我有一个winforms用户控件，可让用户在面板上编辑工作流程。工作流程由构建块和连线组成，这也是我的用户控件。

当我将应用程序从winforms.exe迁移到另一个WCF应用程序的winform控件时，我注意到CPU使用率攀升至25％（=我的4核心机器的单核心的100％）

CPU在运行时尽快回落到0-1％：

我从任何现有控件清除我的工作流程面板，或

我将屏幕焦点移动到另一个应用程序（并让它在后台运行）或甚至是同一个应用程序中的不同选项卡。

重要的是要说这不会发生在Windows窗体托管应用程序中，只能在WCF中发生。

我看到了一个覆盖基础工作流程块UC的WndProc方法的地方，我也做了，但我仍然不理解WndProc方法的调用次数或者如何使其停止。

我的堆栈看起来像：

BaseControls.dll！Ast.Admin.Controls.BaseControl.WndProc（ref System.Windows.Forms.Message m = {System.Windows.Forms.Message}）第91行C＃       System.Windows.Forms.dll！System.Windows.Forms.Control.ControlNativeWindow.OnMessage（ref System.Windows.Forms.Message m）+ 0x1d bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.ControlNativeWindow.WndProc（ref System.Windows.Forms.Message m）+ 0xaa bytes
      System.Windows.Forms.dll！System.Windows.Forms.NativeWindow.Callback（System.IntPtr hWnd，int msg = 129，System.IntPtr wparam，System.IntPtr lparam）+ 0x6f bytes       System.Windows.Forms.dll！System.Windows.Forms.NativeWindow.WindowClass.Callback（System.IntPtr hWnd，int msg，System.IntPtr wparam，System.IntPtr lparam）+ 0x51 bytes
      [原产于管理过渡]
      [管理到原生过渡]
      System.Windows.Forms.dll！System.Windows.Forms.UnsafeNativeMethods.CreateWindowEx（int dwExStyle，string lpszClassName，string lpszWindowName，int style，int x，int y，int width，int height，System.Runtime.InteropServices.HandleRef hWndParent ，System.Runtime.InteropServices.HandleRef hMenu，System.Runtime.InteropServices.HandleRef hInst，object pvParam）+ 0x3f bytes
      System.Windows.Forms.dll！System.Windows.Forms.NativeWindow.CreateHandle（System.Windows.Forms.CreateParams cp）+ 0x22d bytes       System.Windows.Forms.dll！System.Windows.Forms.Control.CreateHandle（）+ 0x12c bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.CreateControl（bool fIgnoreVisible = false）+ 0x89 bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.CreateControl（）+ 0x31 bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.ControlCollection.Add（System.Windows.Forms.Control value = {Ast.Controls.AllianceEnterprise.DataSource}）+ 0x1dd bytes
      AdminUC.dll！Ast.Admin.AdminUC.RuleBuilderUC.AddItem（object objData =＆＃34; C：\ Ast Alliance NextUI \ Bin \ Escalation \ Controls \ Actions \ DataConnector.dll; Ast.Controls.AllianceEnterprise.DataSource＆＃34; ）+ 0x510字节       AdminUC.dll！Ast.Admin.AdminUC.RuleBuilderUC.drawingPanel_DragDrop（object sender = {System.Windows.Forms.Panel}，System.Windows.Forms.DragEventArgs e = {System.Windows.Forms.DragEventArgs}）+ 0xa0 bytes <登记/>       System.Windows.Forms.dll！System.Windows.Forms.Control.OnDragDrop（System.Windows.Forms.DragEventArgs drgevent）+ 0x73 bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.System.Windows.Forms.IDropTarget.OnDragDrop（System.Windows.Forms.DragEventArgs drgEvent）+ 0x15 bytes       System.Windows.Forms.dll！System.Windows.Forms.DropTarget.System.Windows.Forms.UnsafeNativeMethods.IOleDropTarget.OleDrop（object pDataObj，int grfKeyState，long pt，ref int pdwEffect = 1）+ 0x5d bytes       [原产于管理过渡]
      [管理到原生过渡]
      System.Windows.Forms.dll！System.Windows.Forms.Control.DoDragDrop（object data，System.Windows.Forms.DragDropEffects allowedEffects）+ 0xed bytes       AdminUC.dll！Ast.Admin.AdminUC.RuleBuilderUC.listView_MouseDown（object sender = {System.Windows.Forms.ListView}，System.Windows.Forms.MouseEventArgs e = {X = 16 Y = 6 Button = Left}）+ 0x285字节       System.Windows.Forms.dll！System.Windows.Forms.Control.OnMouseDown（System.Windows.Forms.MouseEventArgs e）+ 0x73 bytes
      System.Windows.Forms.dll！System.Windows.Forms.ListView.WmMouseDown（ref System.Windows.Forms.Message m = {System.Windows.Forms.Message}，System.Windows.Forms.MouseButtons button，int clicks） + 0x7a字节
      System.Windows.Forms.dll！System.Windows.Forms.ListView.WndProc（ref System.Windows.Forms.Message m）+ 0xf7 bytes       System.Windows.Forms.dll！System.Windows.Forms.Control.ControlNativeWindow.OnMessage（ref System.Windows.Forms.Message m）+ 0x1d bytes
      System.Windows.Forms.dll！System.Windows.Forms.Control.ControlNativeWindow.WndProc（ref System.Windows.Forms.Message m）+ 0xaa bytes
      System.Windows.Forms.dll！System.Windows.Forms.NativeWindow.Callback（System.IntPtr hWnd，int msg = 513，System.IntPtr wparam，System.IntPtr lparam）+ 0x6f bytes       [原产于管理过渡]
      [管理到原生过渡]
      WindowsBase.dll！System.Windows.Threading.Dispatcher.PushFrameImpl（System.Windows.Threading.DispatcherFrame frame = {System.Windows.Threading.DispatcherFrame}）+ 0xb5 bytes       WindowsBase.dll！System.Windows.Threading.Dispatcher.PushFrame（System.Windows.Threading.DispatcherFrame frame）+ 0x3c bytes
      PresentationFramework.dll！System.Windows.Application.RunDispatcher（对象忽略）+ 0x34字节
      PresentationFramework.dll！System.Windows.Application.RunInternal（System.Windows.Window window）+ 0x16f bytes
      PresentationFramework.dll！System.Windows.Application.Run（System.Windows.Window窗口）+ 0x33字节       PresentationFramework.dll！System.Windows.Application.Run（）+ 0x69字节       Ast Browser.exe！Ast.NextUI.GUI.Shell.App.StartApplication（）+ 0x75 bytes
      Ast Browser.exe！Ast.NextUI.GUI.Shell.App.Main（string [] args）+ 0x22b bytes

其中basecontrol是我的工作流程块的基类。

这种情况将永远发生在第二次我将第一块放在面板上，并不像我在屏幕上做任何事情来证明所有这些痛苦。

Answer 1

这是做什么的：

[Managed to Native Transition]
 System.Windows.Forms.dll!System.Windows.Forms.UnsafeNativeMethods.CreateWindowEx(int dwExStyle, string lpszClassName, string lpszWindowName, int style, int x, int y, int width, int height, System.Runtime.InteropServices.HandleRef hWndParent, System.Runtime.InteropServices.HandleRef hMenu, System.Runtime.InteropServices.HandleRef hInst, object pvParam) + 0x3f bytes
System.Windows.Forms.dll!System.Windows.Forms.NativeWindow.CreateHandle(System.Windows.Forms.CreateParams cp) + 0x22d bytes 
System.Windows.Forms.dll!System.Windows.Forms.Control.CreateHandle() + 0x12c bytes

看起来正在调用OnPaint，因为窗口是第一次创建的。

如果这是一个典型的调用堆栈，在拖放应用程序中每秒调用数百次，你真的需要找出原因并停止它......

onPaint发射太多次

1 个答案: