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我已经经历了与此相关的SO问题，并且无法找到任何问题，因此我在问这个问题。msbuild中的反射问题，devenv很好
我有一个buildtask（添加作为AfterBuild目标），以验证类型的名称。这些类型名称是正在构建的silverlight项目的完全限定类型名称。
要解决这些类型名称，我使用Type.ReflectionOnlyGetType()。要加载相关程序集，我使用Assembly.ReflectionOnlyLoadFrom(filepath)处理AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve事件以从项目输出路径和silverlight安装路径中加载项目特定程序集。
这工作完全正常，当我建的项目是在VS2010，但当我的MSBuild建立即C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\msbuild.exe "C:\Root\branches\x.x.x\clients.sln" /t:rebuild /p:Configuration=Debug "/p:Platform=Any CPU" /v:quiet /maxcpucount:1
虽然与MSBuild的基础上，ReflectionOnlyAssemblyResolve事件被触发为"System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e"，这是加载失败从silverlight安装路径。但是，探测正在尝试"C:/WINDOWS/Microsoft.NET/Framework/v4.0.30319/System.DLL"这个系统组件，由于主要版本不匹配而失败。
以下是我的代码剥离版本，具体到这个问题：
public class ValidateTypeTask : Task
{
public override bool Execute()
{
Initialize();
List<string> typeNames = GetTypes();
foreach (var typeName in typeNames)
{
var isResolved = IsResolvable(typeName);
if (!isResolved)
{
return false;
}
}
CleanUp();
return true;
}
private void Initialize()
{
AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve += new ResolveEventHandler(CurrentDomain_ReflectionOnlyAssemblyResolve);
}
Assembly CurrentDomain_ReflectionOnlyAssemblyResolve(object sender, ResolveEventArgs args)
{
Assembly loadedAssembly = null;
Exception loadedException = null;
try
{
loadedAssembly = Assembly.ReflectionOnlyLoad(args.Name);//this will fail always
}
catch (Exception ex)
{
loadedException = ex;
}
if (loadedAssembly != null)
{
return loadedAssembly;
}
string assemblyPath = string.Empty;
var assemblyName = new AssemblyName(args.Name);
if (args.Name.StartsWith("System"))
{
assemblyPath = @"c:\Program Files\Reference Assemblies\Microsoft\Framework\Silverlight\v4.0";
}
else
{
assemblyPath = @"C:\Root\branches\x.x.x\bin\debug";
}
assemblyPath = string.Format(@"{0}\{1}.dll", assemblyPath, assemblyName.Name);
if (File.Exists(assemblyPath))
{
loadedAssembly = Assembly.ReflectionOnlyLoadFrom(assemblyPath);
}
if (loadedAssembly == null)
{
throw loadedException;
}
return loadedAssembly;
}
private void CleanUp()
{
AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve -= new ResolveEventHandler(CurrentDomain_ReflectionOnlyAssemblyResolve);
}
private List<string> GetTypes()
{
return new List<string>();
}
private bool IsResolvable(string typeName)
{
Type resolvedType = null;
try
{
resolvedType = Type.ReflectionOnlyGetType(typeName, true, true);
}
catch (Exception ex)
{
}
if (resolvedType != null)
{
return true;
}
return false;
}
}
我得到的例外如下：
System.IO.FileLoadException: Could not load file or assembly 'System, Version=2.0.5.0, 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)
File name: 'System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'
at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, Boolean loadTypeFromPartialName, ObjectHandleOnStack type)
at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName)
at System.RuntimeType.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
at System.Type.ReflectionOnlyGetType(String typeName, Boolean throwIfNotFound, Boolean ignoreCase)
at in c:\root\x.xx.x\BuildTasks\ValidateTypesTask.cs line xxx
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: User = domain\username
LOG: DisplayName = System, 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
Calling assembly : (Unknown).
===
LOG: This is an inspection only bind.
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: Attempting download of new URL file:///C:/WINDOWS/Microsoft.NET/Framework/v4.0.30319/System.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Major Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.
我也曾尝试包括Silverlight的程序集路径进入AssemblySearchPaths项目属性让它成为探测网址的一部分，并且仍然相同。
尝试更新项目引用或通过ToolsVersion = 2.0 – KMoraz 2012-02-03 08:58:59
@KMoraz我尝试删除并添加系统组件引用，只是为了更新项目引用，并没有帮助。我无法将ToolsVersion设置为2，因为目标是Silverlight 4.0。另外，我不想设置ToolsVersion，因为在VS2010中一切都很好，很好。 – AnbeSivam 2012-02-06 05:25:49