System.ArgumentNullException Value cannot be null. Parameter name: type

[Pep]

Hello,
are you able to reproduce the problem with a clean app ? If so, could you please attach to a this post the example app ?
Thanks

[TLC]

https://github.com/Jakar510/DebugSteemaTeeChart

[Pep]

Hello,
thanks for sending an example.
I've just checked it and I still not being able to reproduce the problem here. When does it happens to you? Should I do anything special ?
I've uploaded a gif animated of the test here.

[TLC]

This is the stack trace:

Code: Select all

{System.ArgumentNullException: Value cannot be null.Parameter name: type 

at System.Activator.CreateInstance (System.Type type, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Object[] args, System.Globalization.CultureInfo culture, System.Object[] activationAttributes) [0x00003] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:74  

at System.Activator.CreateInstance (System.Type type, System.Object[] args) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:112  

at System.Security.Cryptography.CryptoConfig.CreateFromName (System.String name, System.Object[] args) [0x01002] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/System.Security.Cryptography/CryptoConfig.Mobile.cs:249 }

It only occurs when I create a TeeChart control (ChartView, Line, etc). Tools (Annotations, NearestPoint, etc) don't seem to trigger it.

[TLC]

Just got new info: seems to be related to HotReload and TeeChart.PCL.Android.

Code: Select all

Assembly Ref addref TeeChart.PCL.Android[0x70d6fadb00] -> System.Core[0x70d6fe4be0]: 9
[HotReload] (2021-03-26 16:57:39.2): ERROR: Caught exception in OnAfterSave at 290: System.NullReferenceException: Object reference not set to an instance of an object.
   at Xamarin.HotReload.Vsix.XamarinHotReloadExtensionPackage.GetFileIdentityForDocument(String docPath) in D:\a\1\s\Source\Xamarin.HotReload.Vsix\XamarinHotReloadExtensionPackage.cs:line 316
   at Xamarin.HotReload.Vsix.XamarinHotReloadExtensionPackage.OnAfterSave(UInt32 docCookie) in D:\a\1\s\Source\Xamarin.HotReload.Vsix\XamarinHotReloadExtensionPackage.cs:line 277
   at Xamarin.HotReload.Vsix.XamarinHotReloadExtensionPackage.GetFileIdentityForDocument(String docPath) in D:\a\1\s\Source\Xamarin.HotReload.Vsix\XamarinHotReloadExtensionPackage.cs:line 316
   at Xamarin.HotReload.Vsix.XamarinHotReloadExtensionPackage.OnAfterSave(UInt32 docCookie) in D:\a\1\s\Source\Xamarin.HotReload.Vsix\XamarinHotReloadExtensionPackage.cs:line 277
**System.ArgumentNullException:** 'Value cannot be null.
Parameter name: type'

[Pep]

Hello,

thanks for the info sent.
I've looked into it and have been able to reproduce it and found where the problem was.
It has been fixed now. We'll upload a new maintenance version within one or two days which will include this fix and others.

Thanks.