为Silverlight 5应用程序添加Coded UI支持时为什么无法加载System.Core？

我遇到以下问题：

尝试添加对Silverlight 5应用程序（[MSDN] [1]）的编码UI测试的支持。 第一步是在Silverlight 5项目中引用程序集Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper.dll。 不幸的是，在添加引用之后，项目停止编译时出现了许多类似的错误：

>

Error 25 Cannot resolve reference assemblies. Please check the reference assemblies. Could not load file or assembly 'System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) ....\ErrorReportDialog.xaml Looks like System.Core 5.0.5.0 fails to load, okay, debugging assemblies loading with Fuslogw produces two interesting logs: First log: > Assembly Binder Log Entry (04.03.2013 @ 14:07:49) The operation was successful. Bind result: hr = 0x0. The operation completed successfully. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Running under executable C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe A detailed error log follows. === Pre-bind state information === LOG: DisplayName = System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e (Fully-specified) LOG: Appbase = file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = MSBuild.exe Calling assembly : System.Windows, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e. LOG: This bind starts in LoadFrom load context. WRN: Native image will not be probed in LoadFrom context. Native image will only be probed in default load context, like with Assembly.Load(). LOG: Using application configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe.Config LOG: Using host configuration file: LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config. LOG: Post-policy reference: System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e LOG: Binding succeeds. Returns assembly from C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Silverlight\v5.0\System.Core.dll. LOG: Assembly is loaded in LoadFrom load context. Looks like System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e loads succesfully. But second log entry produces the following error: > Assembly Binder Log Entry (04.03.2013 @ 14:07:49) The operation failed. Bind result: hr = 0x80131040. No description available. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Running under executable C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe A detailed error log follows. Pre-bind state information LOG: DisplayName = System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e (Fully-specified) LOG: Appbase = file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = MSBuild.exe Calling assembly : Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper, Version=10.0.30319.381, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. LOG: This bind starts in default load context. LOG: Using application configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe.Config LOG: Using host configuration file: LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config. LOG: Redirect found in application configuration file: 2.0.5.0 redirected to 5.0.5.0. LOG: Post-policy reference: System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e LOG: The same bind was seen before, and was failed with hr = 0x80131040. ERR: Unrecoverable error occurred during pre-download check (hr = 0x80131040). 

看起来像Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper.dll尝试加载System.Core，Version = 2.0.5.0，Culture = neutral，PublicKeyToken = 7cec85d7bea7798e，但是被重定向到System.Core，版本= 5.0.5.0 ，Culture = neutral，PublicKeyToken = 7cec85d7bea7798e（已从第1个日志加载）仍然无法加载。

 Can anyone provide some insight on how to further debug this problem? I'm compiling Silverlight projects for AnyCpu platform. [1]: http://msdn.microsoft.com/en-us/library/gg413374.aspx 

Answer 1

要确认SilverlightUIAuthomationHelper所需的System.Core版本，请执行以下操作：

1. 在磁盘上找到引用的SilverlightUIAuthomationHelper dll。
2. 将其加载到任何反汇编器/reflection器中 – 例如dotPeek或Reflector。
3. 检查引用程序集的版本 – 在您的SilverlightUIAuthomationHelper版本中，System.Core必须为2.0.5.0

可能的解决方案：

1. 将SilverlightUIAuthomationHelper更新为引用新System.Core dll（版本5.0.5.0）的新版本（Hans Passant注释中的链接）
2. 因为fuslogvw表示从2.0.5.0到5.0.5.0的重定向位于APPLICATION配置文件中 – 尝试查找并删除此重定向（ 详情请参见此处 ）。 但很有可能其他东西会破裂。