visual-studio-2019

问题 I have a Mobile App built with Xamarin.Forms when I am trying to upgrade my project from VS2017 to VS2019 I get this error in Android Project Invalid value 'armeabi' in $(AndroidSupportedAbis). This ABI is no longer supported. Please update your project properties I tried to delete bin and obj folders to force the project to rebuild everything, but the error still appears Can I get an explanation about the error above and how to solve it? Note: the error doesn't appear in VS2017 回答1: armeabi

问题 I use Visual Studio 2019 for mobile application development. I use Android Emulator for a long time but I have some issues with it only during the last month. I have created some virtual device by Android Device Manager. The hw.gpu.mode property is set to auto . When I run this device in the emulator everything is running perfectly. Emulation is very fast and without problems. But when I click on the emulator close button and the device state is saved then everything freezes on a long time.

问题 .NET Core 3.1 added support for C++/CLI (Announcing .NET Core 3.1). The official announcement lists two new project templates, CLR Class Library (.NET Core) and CLR Empty Project (.NET Core) , which we can indeed find and use. However, there is no additional information about supporting technologies such as WPF or Windows Forms. In a blog posts in September, Microsoft said: we are committed to supporting C++/CLI for .NET Core to enable easy interop between C++ codebases and .NET technologies

问题 .NET Core 3.1 added support for C++/CLI (Announcing .NET Core 3.1). The official announcement lists two new project templates, CLR Class Library (.NET Core) and CLR Empty Project (.NET Core) , which we can indeed find and use. However, there is no additional information about supporting technologies such as WPF or Windows Forms. In a blog posts in September, Microsoft said: we are committed to supporting C++/CLI for .NET Core to enable easy interop between C++ codebases and .NET technologies

问题 My project started out years ago. Now using VS 2019. Whilst I can right-click and add event handlers (since it uses a new VS wizard), and I can right-click the class and add generic variables (since it uses a new VS wizard) I can't display class wizard any more: I have tried cleaning the project and tried renaming my folder. It refuses to display and shows that message: Value does not fall within the expected range. The other error message that shows is: The parameter is incorrect. (Exception

问题 I have VS2017 and VS2019 installed side by side on my Windows 10 machine. I can not compile Xamarin Android 4.1 projects (in VS2019) unless I upgrade them to 4.4 which seems to be the minimum Android SDK version I can target in VS2019. VS2017 compiles fine. If I create a new Xamarin Android project in VS2019 I can select from 4.4 and above, but in VS2017 I can target right back to 2.3. Both Visual Studio Xamarin settings are pointing to the same location for the android-sdk (which is on my D:

问题 I have VS2017 and VS2019 installed side by side on my Windows 10 machine. I can not compile Xamarin Android 4.1 projects (in VS2019) unless I upgrade them to 4.4 which seems to be the minimum Android SDK version I can target in VS2019. VS2017 compiles fine. If I create a new Xamarin Android project in VS2019 I can select from 4.4 and above, but in VS2017 I can target right back to 2.3. Both Visual Studio Xamarin settings are pointing to the same location for the android-sdk (which is on my D:

问题 I have VS2017 and VS2019 installed side by side on my Windows 10 machine. I can not compile Xamarin Android 4.1 projects (in VS2019) unless I upgrade them to 4.4 which seems to be the minimum Android SDK version I can target in VS2019. VS2017 compiles fine. If I create a new Xamarin Android project in VS2019 I can select from 4.4 and above, but in VS2017 I can target right back to 2.3. Both Visual Studio Xamarin settings are pointing to the same location for the android-sdk (which is on my D:

问题 ​I'm working on Visual Studio 2019 and Crystal Report Service Pack 26. My code read data into ADO.NET dataset and I set those datases as datasourse of my reports. something like this in Visual Basic.Net: Dim ds1 As New DataSet1() Dim myRep As New CrystalReport1 taAccArticleFields_TBL.Fill(ds1.AccArticleFields_TBL) myRep.SetDataSource(ds1) crvReport.ReportSource = myRep When I run program through VS all is good and reports show without error. But when I want to run my program on another

问题 I wanted to try out Blazor. I've installed .NET Core 3.0 preview 5 SDK, Blazor VS extension to enable project templates. I can create Blazor project, but I can't run it - I constantly get this notification. In some tutorials I see that there should be a checkbox in VS options - to enable using of preview SDKs. But it's not there in VS2019! Version is 16.1.1 回答1: Thanks to @Kirk Woll. They moved this checkbox indeed. 回答2: If you are using the preview channel for vs 2019 then it is on by