c# - 无法注册程序集 System.ArgumentNullException：值不能为空 - Visual Studio for Mac 出现问题

Question

我在错误地构建项目时遇到问题：无法注册程序集“Xamarin.Essentials”：System.ArgumentNullException：值不能为空。

Xamarin.Essential 是 NuGet 包： Xamarin.Essential Nuget 库

我在 VS 上做了所有推荐的清洁，但它仍然不起作用。有人有类似的问题吗？

Visual Studio for Mac - 版本8.6.5（内部版本 23）

Xamarin.Essentials - 版本1.5.3.2

错误 Visual Studio 描述：/Users/.../App.iOS/MTOUCH：错误 MT4116：无法注册程序集“Xamarin.Essentials”：System.ArgumentNullException：值不能为空。(MT4116) (App.iOS)

标签： c#iosvisual-studioxamarin.iosnuget

Answer 1

我使用脚本删除了 Visual Studio for Mac 及其所有依赖项，并使用最新版本安装了 VS。现在它正在工作。

#!/bin/sh

# Uninstall Visual Studio for Mac
echo "Uninstalling Visual Studio for Mac..."

sudo rm -rf "/Applications/Visual Studio.app"
rm -rf ~/Library/Caches/VisualStudio
rm -rf ~/Library/Preferences/VisualStudio
rm -rf ~/Library/Preferences/Visual\ Studio
rm -rf ~/Library/Logs/VisualStudio
rm -rf ~/Library/VisualStudio
rm -rf ~/Library/Preferences/Xamarin/
rm -rf ~/Library/Application\ Support/VisualStudio
rm -rf ~/Library/Application\ Support/VisualStudio/7.0/LocalInstall/Addins/

# Uninstall Xamarin.Android
echo "Uninstalling Xamarin.Android..."

sudo rm -rf /Developer/MonoDroid
rm -rf ~/Library/MonoAndroid
sudo pkgutil --forget com.xamarin.android.pkg
sudo rm -rf /Library/Frameworks/Xamarin.Android.framework


# Uninstall Xamarin.iOS
echo "Uninstalling Xamarin.iOS..."

rm -rf ~/Library/MonoTouch
sudo rm -rf /Library/Frameworks/Xamarin.iOS.framework
sudo rm -rf /Developer/MonoTouch
sudo pkgutil --forget com.xamarin.monotouch.pkg
sudo pkgutil --forget com.xamarin.xamarin-ios-build-host.pkg


# Uninstall Xamarin.Mac
echo "Uninstalling Xamarin.Mac..."

sudo rm -rf /Library/Frameworks/Xamarin.Mac.framework
rm -rf ~/Library/Xamarin.Mac


# Uninstall Workbooks and Inspector
echo "Uninstalling Workbooks and Inspector..."

if [ -f "/Library/Frameworks/Xamarin.Interactive.framework/Versions/Current/uninstall" ]; then
    sudo /Library/Frameworks/Xamarin.Interactive.framework/Versions/Current/uninstall
fi


# Uninstall the Visual Studio for Mac Installer
echo "Uninstalling the Visual Studio for Mac Installer..."

rm -rf ~/Library/Caches/XamarinInstaller/
rm -rf ~/Library/Caches/VisualStudioInstaller/
rm -rf ~/Library/Logs/XamarinInstaller/
rm -rf ~/Library/Logs/VisualStudioInstaller/

# Uninstall the Xamarin Profiler
echo "Uninstalling the Xamarin Profiler..."

sudo rm -rf "/Applications/Xamarin Profiler.app"

echo "Finished Uninstallation process."