无法在C＃中实例化COM组件 - 错误80070002 [英] Can't instantiate COM component in C# - error 80070002

问题描述

我尝试在我的计算机上实例化Windows Media Player COM对象：

I'm attempting to instantiate a Windows Media Player COM object on my machine:

Guid mediaPlayerClassId = new Guid("47ac3c2f-7033-4d47-ae81-9c94e566c4cc");
Type mediaPlayerType = Type.GetTypeFromCLSID(mediaPlayerClassId);
Activator.CreateInstance(mediaPlayerType); // <-- this line throws

执行最后一行时，会出现以下错误：

When executing that last line, I get the following error:

System.IO.FileNotFoundException was caught
  Message="Retrieving the COM class factory for component with CLSID {47AC3C2F-7033-4D47-AE81-9C94E566C4CC} failed due to the following error: 80070002."
  Source="mscorlib"
  StackTrace:
       at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck)
       at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache)
       at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache)
       at System.Activator.CreateInstance(Type type, Boolean nonPublic)
       at System.Activator.CreateInstance(Type type)
       at MyStuff.PreviewFile(String filePath) in F:\Trunk\PreviewHandlerHosting\PreviewHandlerHost.cs:line 60
  InnerException: 

同样的代码适用于其他开发人员机器和最终用户机器。由于某些原因，它只在我的机器上失败。原因可能是什么？

This same code works on other developer machines and end user machines. For some reason, it only fails on my machine. What could be the cause?

推荐答案

80070002是未找到文件的错误。

80070002 is a File Not Found error.

我的猜测是你的机器缺少依赖。尝试通过depends.exe运行com组件，以查看是否安装了所有必需的库。

My guess is your machine is missing a dependency. Try running the com component through depends.exe to see if you have all of the required libraries installed.

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