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agileobjects / ReadableExpressions

A library and Debugger Visualizer which translates Expression Trees into readable C# source code. .NET 3.5+ and .NET Standard 1.0+.
MIT License
396 stars 22 forks source link

System.NotSupportedException in the newest Visual Studio #81

Closed aradalvand closed 3 years ago

aradalvand commented 3 years ago

Hi there! Extremely useful extension! I've been using it for quite a while now, but after I reinstalled Visual Studio 2019 (I'm on version 16.8.1 right now), whenever I click on the magnifier button, I get the following error window: image

I was going to try uninstalling and then installing the extension again, but the "Uninstall" button is grayed out: image

I'd appreciate any help.

SteveWilkes commented 3 years ago

Hello!

Thanks for letting me know about this - glad the extension has been useful!

Because it installs with an MSI, you have to uninstall it via Add/Remove Programs - could you give that a try and let me know how you get on?

Cheers!

Steve

aradalvand commented 3 years ago

@SteveWilkes Hi, Steve. Thank you for the response! I uninstalled it from Add/Remove Programs as you said (thanks for pointing that out by the way) and then installed it again. The problem however is still there. One other thing I noticed is that this doesn't happen when I'm in a console app project, I tried it in an ASP.NET Core project and I faced this error window.

What do you think could be causing this?

SteveWilkes commented 3 years ago

Hmm - looks like we've run into this .NET 5 breaking change, which is causing issues elsewhere, too.

I assume (confirmed - see 'The VisualizerObjectSource') the VS debugger uses BinaryFormatter to serialize Expressions before sending them to the visualizer, and it's been disabled by default in ASP.NET Core 5, but not console apps. Does that match your scenario?

You can enable it in Debug only using:

<PropertyGroup>
  <TargetFramework>net5.0</TargetFramework>
  <EnableUnsafeBinaryFormatterSerialization Condition=" '$(Configuration)' == 'Debug' ">
    true
  </EnableUnsafeBinaryFormatterSerialization>
</PropertyGroup>

There are security considerations to doing this, but I suspect unless you're using BinaryFormatter for serialization of objects from outside of your control, switching it on in Debug won't do any harm. No warranty intended or implied, of course!

Thanks again for bringing this to my attention, I'll have a look to see if there's anything I can do to work around it on my end, although I suspect it's down to how Visual Studio Debugger Visualizers are implemented, so it'll be one for Microsoft!

SteveWilkes commented 3 years ago

Hello!

I've now had a reply on Microsoft's Developer Community regarding this, which confirms it's ASP.NET Core 5-specific, and is down to a change in Visual Studio.

The recommended fix is to enable the binary formatter in debug as described above.

Cheers,

Steve

aradalvand commented 3 years ago

Hi! Sorry for being late! Okay, got it, thank you!

mhamri commented 3 years ago

OMG!, this one should be on the readme.md. I'm installing and uninstalling things for two days, blamed my anti-virus and stuff BCS of this.

SteveWilkes commented 3 years ago

Sorry about that @mhamri - I've updated the readme as you suggested.

All the best,

Steve

drewnoakes commented 3 years ago

Sounds like there's an issue with the installer too, if uninstall is not removing the visualizer from VS completely.

Another report of this issue: https://stackoverflow.com/q/67569999/24874

SteveWilkes commented 3 years ago

Thanks for the heads up on that one, @drewnoakes - I've added an answer to the SO question. The poster didn't actually run the uninstaller as far as I can tell, so I think it's probably fine.

pantonis commented 3 years ago

Using VS2019 16.8.5 I added the EnableUnsafeBinaryFormatterSerialization and I am getting the following error now:

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component.
   at System.Windows.Forms.UnsafeNativeMethods.IWebBrowser2.get_RegisterAsDropTarget()
   at System.Windows.Forms.WebBrowser.set_AllowWebBrowserDrop(Boolean value)
   at AgileObjects.ReadableExpressions.Visualizers.Dialog.Controls.VisualizerViewer.HandleShown(String translation)
   at AgileObjects.ReadableExpressions.Visualizers.Dialog.VisualizerDialog.<>c.<.ctor>b__8_0(Object sender, EventArgs args)
   at System.Windows.Forms.Form.OnShown(EventArgs e)
   at System.Windows.Forms.Form.CallShownEvent()
   at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

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    Assembly Version: 3.3.1.0
    Win32 Version: 3.3.1
    CodeBase: file:///C:/Program%20Files%20(x86)/Microsoft%20Visual%20Studio/2019/Professional/Common7/Packages/Debugger/Visualizers/AgileObjects.ReadableExpressions.Visualizers.Vs16.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
SteveWilkes commented 3 years ago

I've seen that sort of error happen @pantonis - if something goes wrong with the debugger (which can be the visualizers, and can be the way the visualizers handle the debugger in particular states - it's weird and difficult to diagnose), it can throw those errors until you close + reopen Visual studio.