无法从Windows 8.1运行时窗口存储应用项目

Question

我正在开发 Windows Phone 8.1（WinRT）Windows应用商店项目。我为DataConnection，ServiceConnection等开发了不同的PCL项目......我在WP 8.1项目中引用了它。在DataConnection pcl中，我拥有在.net 4.0目标下创建的所有.resx文件。我的所有PCL项目都是在Xamarin Studio中为跨平台（Android，iOS，WP）创建的。现在我按照 Visual Studio Premium 2013 打开我的项目以开发WP项目并将目标框架从.net 4.0更改为4.5，因为WP 8.1要求4.5作为目标。

更改后，我无法从Windows Phone项目中读取字符串资源值。在执行下面的行时，

string test = Test.String1;

它抛出异常，

An exception of type 'System.ArgumentNullException' occurred in mscorlib.ni.dll but was not handled in user code

Additional information: Value cannot be null.

异常追踪：

System.ArgumentNullException was unhandled by user code
  HResult=-2147467261
  Message=Value cannot be null.
Parameter name: format
  Source=mscorlib
  ParamName=format
  StackTrace:
       at System.String.Format(IFormatProvider provider, String format, Object[] args)
       at System.Environment.GetResourceString(String key, Object[] values)
       at System.Resources.ResourceManager.GetString(String name, CultureInfo culture)
       at App.Core.Resources.Test.get_String1()
       at App.Forms.WindowsPhoneUI.MainPage..ctor()
       at App.Forms.WindowsPhoneUI.App_Forms_WindowsPhoneUI_XamlTypeInfo.XamlTypeInfoProvider.Activate_4_MainPage()
       at App.Forms.WindowsPhoneUI.App_Forms_WindowsPhoneUI_XamlTypeInfo.XamlUserType.ActivateInstance()
  InnerException: 

截图：

这里出了什么问题？请有人帮我解决这个问题。

Answer 1

This blog helped me to fix this issue. Although the exceptions were different, in the blog its mentioned as MissingManifestResourceException whereas I was getting ArgumentNull exception, but internal it was crashing in Getstring method in both the cases.

Code Referred from above blog:

I added below class in my project.

public class WindowsRuntimeResourceManager : ResourceManager
{

  private readonly ResourceLoader resourceLoader;

  private WindowsRuntimeResourceManager(string baseName, Assembly assembly) : base(baseName, assembly)
  {
    this.resourceLoader = ResourceLoader.GetForViewIndependentUse(baseName);
  }

  public static void InjectIntoResxGeneratedApplicationResourcesClass(Type resxGeneratedApplicationResourcesClass)
  {
    resxGeneratedApplicationResourcesClass.GetRuntimeFields()
      .First(m => m.Name == "resourceMan")
      .SetValue(null, new WindowsRuntimeResourceManager(resxGeneratedApplicationResourcesClass.FullName, resxGeneratedApplicationResourcesClass.GetTypeInfo().Assembly));
  }



  public override string GetString(string name, CultureInfo culture)
  {
    return this.resourceLoader.GetString(name);
  }
}

And in Windows Phone project before calling resource file, just have to call below method.

WindowsRuntimeResourceManager.InjectIntoResxGeneratedApplicationResourcesClass(typeof(App.Resources.Account));

            string test = App.Resources.Account.Error_CouldnotCreateUserProfile;