我使用的是Win2003 Standard Server + VS.Net 2003，最近发现在VS.Net中DataGrid无法使用，总是显示一个“创建控件时出错”的错误提示（见附图），开始怀疑是VS.Net 2003的问题，后来把VS.Net卸载后重装，问题依旧，试着使用SharpDeveloper，发现根本就无法创建Form，只要一创建就会提示一大堆如下所示的错误信息：
System.NullReferenceException: Object reference not set to an instance of an object.
at ICSharpCode.SharpDevelop.FormDesigner.FormKeyHandler.PreFilterMessage(Message& m)
at System.Windows.Forms.ThreadContext.System.Windows.Forms.UnsafeNativeMethods+IMsoComponent.FPreTranslateMessage(MSG& msg)
at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop
(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.RunDialog(Form form)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at System.Windows.Forms.Form.ShowDialog()
at ICSharpCode.SharpDevelop.SharpDevelopMain.ShowErrorBox(Object sender, ThreadExceptionEventArgs eargs)
at System.Windows.Forms.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.Control.WndProcException(Exception e)
at System.Windows.Forms.ControlNativeWindow.OnThreadException(Exception e)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.Control.SendMessage(Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.Control.ReflectMessageInternal(IntPtr hWnd, Message& m)
at System.Windows.Forms.Control.WmCommand(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.ParkingWindow.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
我怀疑是Framework损坏，但是运行dotnetfx.exe重新安装时提示“您尝试安装的产品已经随操作系统一起安装到计算机上，请使用Update安装最新的更新” 
现在我该怎么办？除了重装系统还有什么办法吗 
？
