[dotnet-sdk-7.0.100-preview.2.22114.1] DbTool get exception after launch and app crashs

Application Name: DbTool OS: Windows 10 RS5 CPU: X64 .NET Build Number: dotnet-sdk-7.0.100-preview.2.22114.1

Verify Scenarios: 1). Windows10 RS5 x64+dotnet-sdk-7.0.100-preview.2.22114.1: Fail 2). Windows10 RS5 x64+dotnet-sdk-7.0.100-preview.1.22110.4: Pass 3). Windows10 RS5 x64+dotnet-sdk-5.0.405-win-x64 (Default SDK): Pass

Github link for source code: https://github.com/WeihanLi/DbTool

App Source and App Check at : https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1483884

Findings: When we create FolderBrowserDialog object, this issue only repro if we init Description property.

Description = “this is test”, //if you remove this line, issue not repro

Minimal Repro steps: dotnet-sdk-7.0.100-preview.2.22114.1 sdk should be installed on the machine. Sample code attached. WinFormsApp1 (1).zip

1. Create .net7 Winform app
2. Add FolderBrowserDialog and Button Component to form
3. In Button click event, write this :

  private void button1_Click(object sender, EventArgs e)
        {
            var dialog = new System.Windows.Forms.FolderBrowserDialog
            {
                Description = "this is test", //if you remove this line, issue not repro
                ShowNewFolderButton = true
            };
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) //error here
            {

            }
        }

Expected Result: Dialog will be closed.

Actual Result: Get below exception:

System.InvalidCastException
  HResult=0x80004002
  Message=Unable to cast object of type 'FileOpenDialogWrapper' to type 'IFileDialogCustomize'.
  Source=System.Private.CoreLib
  StackTrace:
   at System.Runtime.CompilerServices.CastHelpers.ChkCast_Helper(Void* toTypeHnd, Object obj)
   at System.Windows.Forms.FolderBrowserDialog.SetDialogProperties(IFileDialog dialog)
   at System.Windows.Forms.FolderBrowserDialog.TryRunDialogVista(IntPtr owner, Boolean& returnValue)
   at System.Windows.Forms.FolderBrowserDialog.RunDialog(IntPtr hWndOwner)
   at System.Windows.Forms.CommonDialog.ShowDialog(IWin32Window owner)
   at WinFormsApp1.Form1.button1_Click(Object sender, EventArgs e) in C:\Users\v-altunc\source\repos\WpfApp2\WinFormsApp1\Form1.cs:line 17
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)
   at Interop.User32.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.Interop.Mso.IMsoComponentManager.FPushMessageLoop(UIntPtr dwComponentID, msoloop uReason, Void* pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(msoloop reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(msoloop reason, ApplicationContext context)
   at WinFormsApp1.Program.Main() in C:\Users\v-altunc\source\repos\WpfApp2\WinFormsApp1\Program.cs:line 14

  This exception was originally thrown at this call stack:
    System.Windows.Forms.FolderBrowserDialog.SetDialogProperties(Interop.Shell32.IFileDialog)
    System.Windows.Forms.FolderBrowserDialog.TryRunDialogVista(System.IntPtr, out bool)
    System.Windows.Forms.FolderBrowserDialog.RunDialog(System.IntPtr)
    System.Windows.Forms.CommonDialog.ShowDialog(System.Windows.Forms.IWin32Window)
    WinFormsApp1.Form1.button1_Click(object, System.EventArgs) in Form1.cs
    System.Windows.Forms.Button.OnMouseUp(System.Windows.Forms.MouseEventArgs)
    System.Windows.Forms.Control.WmMouseUp(ref System.Windows.Forms.Message, System.Windows.Forms.MouseButtons, int)
    System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message)
    System.Windows.Forms.ButtonBase.WndProc(ref System.Windows.Forms.Message)
    System.Windows.Forms.Control.ControlNativeWindow.WndProc(ref System.Windows.Forms.Message)
    ...
    [Call Stack Truncated]

Repro steps for affected app: This is .Net 5.0 app, but we are running it on 7.0, machine only have 7.0 installed, and DOTNET_ROLL_FORWARD_ON_NO_CANDIDATE_FX=2, so it runs on 7.0 1.Launch DbTool.exe. 3.Input connection string: Server=(localdb)\MSSQLLocalDB;Database=master. 4.Select “SqlServer” item. 5.Click Connect button. 6.Check the item MSreplicationoptions. 7.Click “导出C# Code” button.

Expected Result: Export successful.

Actual Result: It shows error and crash.

Application: DbTool.exe
CoreCLR Version: 7.0.22.10302
.NET Version: 7.0.0-preview.2.22103.2
Description: The process was terminated due to an unhandled exception.
Exception Info: System.InvalidCastException: Unable to cast object of type 'FileOpenDialogWrapper' to type 'IFileDialogCustomize'.
at System.Windows.Forms.FolderBrowserDialog.SetDialogProperties(IFileDialog dialog)
at System.Windows.Forms.FolderBrowserDialog.TryRunDialogVista(IntPtr owner, Boolean& returnValue)
at System.Windows.Forms.FolderBrowserDialog.RunDialog(IntPtr hWndOwner)
at System.Windows.Forms.CommonDialog.ShowDialog(IWin32Window owner)
at DbTool.MainWindow.ChooseFolder() in C:\sourcr\DbTool\src\DbTool\MainWindow.xaml.cs:line 395
at DbTool.MainWindow.ExportModel_Click(Object sender, RoutedEventArgs e) in C:\sourcr\DbTool\src\DbTool\MainWindow.xaml.cs:line 145
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.Controls.Primitives.ButtonBase.OnClick()
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at DbTool.App.Main() in C:\sourcr\DbTool\src\DbTool\obj\Debug\net5.0-windows\App.g.cs:line 51

@dotnet-actwx-bot @dotnet/compat

[Junjun-zhao]

Verified with 7.0.100-preview.3.22118.7, this issue has been fixed. Thanks

[RussKie]

@kant2002 not easily, many dashboards, feeds and tools are internal only. In general the flow is, dotnet/winforms > dotnet/wpf > dotnet/windowsdesktop > dotnet/sdk > dotnet/installer. So to see that a particular commit has flown, one needs to walk down the stream and check each repo’s “[main] Update dependencies from dotnet/XYZ” PRs.