Question

Visual Studio中另一个令人烦恼的随机错误。一切正常，现在当我尝试通过常规手段（F5）启动调试时，我收到此错误：

    System.InvalidOperationException: 'An error occurred creating the form. See Exception.InnerException for details.  The error is: No process is associated with this object.'

堆栈追踪：

   at C64DebuggerGUI.My.MyProject.MyForms.Create__Instance__[T](T Instance)
   at C64DebuggerGUI.My.MyProject.MyForms.get_cdbf()
   at C64DebuggerGUI.My.MyApplication.OnCreateMainForm()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
   at C64DebuggerGUI.My.MyApplication.Main(String[] Args)

代码中抓住异常的点：

Application.Designer.vb

Option Strict On
Option Explicit On

Namespace My

Partial Friend Class MyApplication

    <Global.System.Diagnostics.DebuggerStepThroughAttribute()>  _
    Public Sub New()
        MyBase.New(Global.Microsoft.VisualBasic.ApplicationServices.AuthenticationMode.Windows)
        Me.IsSingleInstance = false
        Me.EnableVisualStyles = true
        Me.SaveMySettingsOnExit = true
        Me.ShutDownStyle = Global.Microsoft.VisualBasic.ApplicationServices.ShutdownMode.AfterMainFormCloses
    End Sub

    <Global.System.Diagnostics.DebuggerStepThroughAttribute()>  _
    Protected Overrides Sub OnCreateMainForm()
        Me.MainForm = Global.C64DebuggerGUI.cdbf  ' < !!!!!!EXCEPTION HERE!!!!!!
    End Sub
End Class
End Namespace

谷歌此时并不是我的朋友。类/形式C64DebuggerGUI.cdbf肯定存在。

我确实更改了一次owrked的启动表单，即它在调试器中启动到此子表单。但是，将其更改回cdbf.vb然后再次尝试子表单，在我的代码中的其他地方获得相同的错误。即：

System.InvalidOperationException: 'An error occurred creating the form. See Exception.InnerException for details.  The error is: No process is associated with this object.'

在：

 Private Sub Initialise()
    Db = cdbf.MainDb
    ToolsBindingSource.DataSource = Db.Tables("Tools") ' <-- !!! EXCEPTION HERE !!!
    ' truncated as code above just illustrative

我不确定这是我的代码还是VS的怪癖，但这是令人沮丧的地狱。这让我完全无法解决问题:(

如何解决此异常？

Answer 1

哎哟。解决了它。罪魁祸首是cdbf.vb中的这段代码：

Private Sub RefreshC64DebugWnd()

    If My.Settings.SuppressC64dAtStartup Then Return
    ShowWindow(C64Dproc.MainWindowHandle, SW_HIDE)
    wait(100)
    ShowWindow(C64Dproc.MainWindowHandle, SW_MAXIMIZE)

End Sub

Private Sub MainSplitContainer_SplitterMoved(sender As Object, e As SplitterEventArgs) Handles MainSplitContainer.SplitterMoved

    RefreshC64DebugWnd()

End Sub

我猜在实例化C64Dproc（进程）之前，splitter.moved事件被触发了。因此'未找到过程'错误。我猜是因为这是通过'非托管'（？）代码操纵的，VS无法指出我的罪魁祸首？

当然，真正具有讽刺意味的是，这是我班上的最后3行！

Visual Studio中的调试错误：'创建表单时出错。没有进程与此对象关联。'

1 个答案: