尝试为SxS C#.NET COM DLL调用CoCreateInstance时的HRESULT 0x80070002(FILE_NOT_FOUND)

时间:2012-05-10 08:29:43

标签: c# com side-by-side

我正在尝试从本机COM客户端中的C#.NET DLL创建COM对象。这是C#.NET代码

using System;
using System.Reflection;
using System.Runtime.InteropServices;

[assembly: AssemblyVersion("1.0.0.0")]
[assembly: Guid("3B6B6C37-A5BC-45DF-878E-E9D5C8B009D8")]

namespace NetTestCom
{
    [ComImport]
    [Guid("508012FC-26A9-4985-A985-3EBB03D8D3A6"),
        ComVisible(true)]
    public interface ITestClass
    {
        int StrToInt(String S);
    }

    [Guid("A3D56E20-0792-42D9-B2DD-BB8A8AD75394"),
        ComVisible(true)]
    public class TestClass : ITestClass
    {
        public int StrToInt(String S)
        {
            return Convert.ToInt32(S);
        }
    }
}

如果我告诉Visual Studio将其注册为COM interop并调用CoCreateInstance,它将按预期工作。

现在我想使用相同的DLL作为免费注册的并排COM。我将依赖项添加到我的应用程序清单

<dependency>
  <dependentAssembly>
    <assemblyIdentity
      type="win32"
      name="NetTestCom.X"
      version="1.0.0.0" />
  </dependentAssembly>
</dependency>

并创建一个文件NetTestCom.X.manifest

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
  <assemblyIdentity
    type="win32"
    name="NetTestCom.X"
    version="1.0.0.0" />

  <clrClass
    clsid="{A3D56E20-0792-42D9-B2DD-BB8A8AD75394}"
    progid="NetTestCom.TestClass"
    threadingModel="Both"
    name="NetTestCom.TestClass"
    runtimeVersion="v2.0.50727" >
  </clrClass>

  <file name="NetTestCom.dll"></file>
</assembly>

现在,当我尝试调用CoCreateInstance时,我得到了HRESULT 0x80070002。应用程序,DLL和清单都在同一目录中。

1 个答案:

答案 0 :(得分:1)

似乎清单中存在问题。我在应用程序清单

中使用了这个依赖声明
<dependency>
  <dependentAssembly>
    <assemblyIdentity
      name="NetTestCom"
      version="1.0.0.0"
      processorArchitecture="MSIL" />
  </dependentAssembly>
</dependency>

并显示为NetTestCom.manifest(使用GenMan32.exe生成)

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
    <assemblyIdentity
        name="NetTestCom"
        version="1.0.0.0"
        processorArchitecture="MSIL" />
    <clrClass
        clsid="{A3D56E20-0792-42D9-B2DD-BB8A8AD75394}"
        progid="NetTestCom.TestClass"
        threadingModel="Both"
        name="NetTestCom.TestClass"
        runtimeVersion="v2.0.50727">
    </clrClass>
    <file name="NetTestCom.dll">
    </file>
</assembly>

现在它按预期工作。