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Creating a new WinForms project in .NET 6 in Version 17.3.0 Preview 2.0 breaks the designer for Form1.cs

See original GitHub issue

Environment

Version 17.3.0 Preview 2.0

.NET version

 Version:   6.0.400-preview.22301.10
 Commit:    25580ffe7a

Běhové prostředí:
 OS Name:     Windows
 OS Version:  10.0.19043
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\6.0.400-preview.22301.10\

Host (useful for support):
  Version: 6.0.5
  Commit:  70ae3df4a6

.NET SDKs installed:
  5.0.203 [C:\Program Files\dotnet\sdk]
  6.0.400-preview.22301.10 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 5.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 5.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Did this work in a previous version of Visual Studio and/or previous .NET release?

yes it worked in some previous VS 2022

Issue description

Create a new project from template.

The error says ensure that the project can be built but it can. ========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========

It is unclear what the problem is.

Call stack is:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<STYLE>.MainHeaderText { font:0.8em Segoe UI; color:#FFFFFF; font-weight:bold; }.MainHeaderErrorNumberText { font:0.7em Segoe UI; color:#000000; }.MainHeaderWhyText { font:0.8em Segoe UI; color:#FFFFFF; text-decoration:underline; cursor:pointer; }.MainHeaderIgnoreText { font:0.8em Segoe UI; color:#FFFFFF; text-decoration:underline; cursor:pointer; }.MainHeaderBackground { background-image:url('C:\Users\janse\AppData\Local\Temp\tmpB16F.tmp.gif'); background-repeat:repeat-x; background-color:#434E5E; }.ErrorHeaderErrorText { font:0.7em Segoe UI; color:#000000; font-weight:bold; }.ErrorHeaderGoToCodeText { font:0.7em Segoe UI; color:#000080; text-decoration:underline; cursor:pointer; }.ErrorBodyTitle { font:0.8em Segoe UI; font-weight:bold; color:#000080; }.ErrorBodyLink { font:0.8em Segoe UI; color:#007ACC; text-decoration:underline; cursor:pointer; }.ErrorBodyLinkNoSizing { color:#007ACC; text-decoration:underline; cursor:pointer; }.ErrorBodyText { font:0.8em Segoe UI; color:#000000; }.ErrorBodyCallStack { font:0.7em Segoe UI; color:#000000; }.ClickableCell { cursor:pointer; }.HasVisuallyDistinctBorder { border:none; }</STYLE>
</HEAD>
<BODY bgColor=#1a1a1a>
<TABLE role=document id=CollapseBody0 class=HasVisuallyDistinctBorder 
cellSpacing=0 cellPadding=0 width="100%" bgColor=#ffffff>
<TBODY>
<TR role=presentation>
<TD bgColor=#ffffff>
<TABLE role=document cellSpacing=0 cellPadding=0 width="100%">
<TBODY>
<TR role=presentation>
<TD><!--StartFragment-->
<TABLE role=document cellSpacing=0 cellPadding=0>
<TBODY><TR role=presentation id=CallStackBody0_1>
<TD class=ErrorBodyCallStack>at 
Microsoft.DotNet.DesignTools.Client.Host.ProjectInfoProvider.NetCore.<GETNETCOREPROJECTINFOASYNC>d__6.MoveNext()<BR>--- 
End of stack trace from previous location where exception was thrown ---<BR>at 
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()<BR>at 
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task 
task)<BR>at 
Microsoft.DotNet.DesignTools.Client.Host.ProjectInfoProvider.<GETPROJECTINFOASYNC>d__9.MoveNext()<BR>--- 
End of stack trace from previous location where exception was thrown ---<BR>at 
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()<BR>at 
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task 
task)<BR>at 
Microsoft.DotNet.DesignTools.Client.Host.ServerHostFactory.<CREATEHOSTASYNC>d__7.MoveNext()<BR>--- 
End of stack trace from previous location where exception was thrown ---<BR>at 
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()<BR>at 
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task 
task)<BR>at 
Microsoft.DotNet.DesignTools.Client.DesignToolsClientLoader.<CREATECLIENTASYNC>d__29.MoveNext()<BR>--- 
End of stack trace from previous location where exception was thrown ---<BR>at 
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()<BR>at 
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task 
task)<BR>at 
Microsoft.DotNet.DesignTools.Client.DesignToolsClientLoader.&lt;&gt;c__DisplayClass25_1.&lt;&lt;-ctor&gt;b__1&gt;d.MoveNext()<BR>--- 
End of stack trace from previous location where exception was thrown ---<BR>at 
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()<BR>at 
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task 
task)<BR>at 
Microsoft.DotNet.DesignTools.Client.DesignToolsClientLoader.<GETCLIENTASYNC>d__27.MoveNext() 
</TD></TR></TBODY></TABLE>
<TABLE role=document cellSpacing=0 cellPadding=0 width="100%">
<TBODY>
<TR role=presentation>
<TD><BR></TD></TR></TBODY></TABLE><!--EndFragment--></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></BODY></HTML>

Steps to reproduce

Create a new WinForms project

Diagnostics

No response

Workarounds

open/close Visual Studio fixes the issue

Issue Analytics

State:
Created a year ago
Reactions:2
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

RussKiecommented, Jul 26, 2022

Without additional diagnostics there’s nothing we can do further. If you see this issue occur again please ping here or raise a new issue. Thanks.

0reactions

janseriscommented, Jul 25, 2022

@RussKie

I can’t repro the issue.

OK I thought it would work for everyone because it was just clicking new project in that VS version and I got the error immediately and I got two likes which I thought means that two more people experienced this as well.

" why are you unable to share the diagnostics?

as I wrote I don’t have that version installed anymore because it’s been 14+ days and my environment has changed.

I can’t use a preview version now because of lack of disk space and this is not a priority problem for me because I can work in regular VS. I just wanted to let you know

If you cannot reproduce it with that VS version, we can close the issue. Maybe it is not even present in the current preview (anyways, new and new VS 2022 previews are released every week or two because of MAUI team not being able to patch MAUI runtime and SDK in a different way)