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无法为Windows Phone 8.1应用程序项目安装MvvmLight

[英]Cannot install MvvmLight for Windows Phone 8.1 app project

原文 2014-06-11 04:00:47 2 1 c#/ mvvm-light/ windows-phone-8.1

I'm trying to install MvvmLight on my Windows Phone 8.1 project (Visual Studio 2013) but keep getting this error message: 我正在尝试在Windows Phone 8.1项目（Visual Studio 2013）上安装MvvmLight，但始终收到此错误消息：

Install-Package : Could not install package 'Portable.MvvmLightLibs 4.4.32.1'. Install-Package：无法安装软件包“ Portable.MvvmLightLibs 4.4.32.1”。 You are trying to install this package into a project that targets 'WindowsPhoneApp,Version=v8.1', but the package does not contain any assembly references or content files that are compatible with that framework. 您正在尝试将此软件包安装到以“ WindowsPhoneApp，Version = v8.1”为目标的项目中，但是该软件包不包含任何与该框架兼容的程序集引用或内容文件。 For more information, contact the package author. 有关更多信息，请与软件包作者联系。

The description of the package states: 软件包说明如下：

The MVVM Light Toolkit is a set of components helping people to get started in the Model-View-ViewModel pattern in Silverlight, WPF, Windows Phone, Windows Store and Xamarin Android. MVVM Light Toolkit是一组组件，可以帮助人们从Silverlight，WPF，Windows Phone，Windows Store和Xamarin Android的Model-View-ViewModel模式开始使用。 It is a light and pragmatic framework that contains only the essential components needed. 它是一个轻巧而实用的框架，仅包含所需的基本组件。 This version contains the portable libraries for WPF4.5, Windows 8 and 8.1, Windows Phone 8.1 and Xamarin Android! 这个版本包含WPF4.5，Windows 8和8.1， Windows Phone 8.1和Xamarin Android的可移植库！

What gives? 是什么赋予了？ As background, I previously installed the MVVM Light package (4.2.30.0) and the uninstalled it because it didn't add any references. 作为背景，我之前安装了MVVM Light软件包（4.2.30.0）并卸载了它，因为它没有添加任何引用。 It kept the View Model locators around. 它保持了View Model定位器的位置。

1 个解决方案

This happens if you are using an older version of NuGet. 如果您使用的是NuGet的旧版本，则会发生这种情况。 Once I updated NuGet, the problem went away. 更新NuGet之后，问题就消失了。