Question

我阅读了有关通过检查注册表项来确定所安装的.NET Framework版本的各种文章。但是我在article中读到，不同的.NET Framework版本需要在其上运行的不同CLR版本。因此，从注册表中我知道在Dev服务器上安装了.NET Framework 4.8。而且我已经运行了clrver.exe，并确定我安装了CLR版本4.0.30319，它最多仅支持.NET Framework v4.5.2。这一切都在我的Dev服务器上。我想为我的测试和生产服务器了解相同的信息。我可以从注册表中获取.NET Framework版本，但是由于clrver.exe是Visual Studio工具，如何在未安装Visual Studio的计算机上确定CLR版本？

Answer 1

clrver.exe 调用CLRCreateInstance

所以您可以做同样的事情=>

我明白了：

版本：v2.0.50727

版本：v4.0.30319

object pCLRMetaHost;
HRESULT hr = CLRCreateInstance(CLSID_CLRMetaHost, typeof(ICLRMetaHost).GUID, out pCLRMetaHost);
if (hr == HRESULT.S_OK)
{
    ICLRMetaHost CLRMetaHost = (ICLRMetaHost)pCLRMetaHost;
    IEnumUnknown pEnumUnknown;
    hr = CLRMetaHost.EnumerateInstalledRuntimes(out pEnumUnknown);
    if (hr == HRESULT.S_OK)
    {
        object[] pUnknown = new object[1];
        uint uceltFetched;
        while (HRESULT.S_OK == pEnumUnknown.Next(1, pUnknown, out uceltFetched) && (uceltFetched == 1))
        {
            int nBufferSize = 256;
            StringBuilder sbBuffer = new StringBuilder(nBufferSize);
            ICLRRuntimeInfo CLRRuntimeInfo = (ICLRRuntimeInfo)pUnknown[0];
            CLRRuntimeInfo.GetVersionString(sbBuffer, ref nBufferSize);
            Console.WriteLine("Version: {0}", sbBuffer);
        }
    }
    Marshal.ReleaseComObject(pCLRMetaHost);
}

带有声明：

    public enum HRESULT : int
    {
        S_OK = 0,
        S_FALSE = 1,
        E_NOINTERFACE = unchecked((int)0x80004002),
        E_NOTIMPL = unchecked((int)0x80004001),
        E_FAIL = unchecked((int)0x80004005),
    }

    [ComImport]
    [Guid("D332DB9E-B9B3-4125-8207-A14884F53216")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface ICLRMetaHost
    {
        HRESULT GetRuntime(string pwzVersion, [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out object ppRuntime) ;
        HRESULT GetVersionFromFile(string pwzFilePath, StringBuilder pwzBuffer, ref uint pcchBuffer);
        HRESULT EnumerateInstalledRuntimes(out IEnumUnknown ppEnumerator);
        HRESULT EnumerateLoadedRuntimes(IntPtr hndProcess, out IEnumUnknown ppEnumerator);
        HRESULT RequestRuntimeLoadedNotification(IntPtr pCallbackFunction);
        HRESULT QueryLegacyV2RuntimeBinding([In, MarshalAs(UnmanagedType.LPStruct)] Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out object ppUnk);
        HRESULT ExitProcess(int iExitCode);
    }

    [Guid("00000100-0000-0000-C000-000000000046")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IEnumUnknown
    {
        HRESULT Next([In, MarshalAs(UnmanagedType.U4)] uint celt, [Out, MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.IUnknown, SizeParamIndex = 0)] object[] rgelt,
            [MarshalAs(UnmanagedType.U4)] out uint pceltFetched);
        HRESULT Skip(uint celt);
        HRESULT Reset();
        HRESULT Clone(out IEnumUnknown ppenum);
    }

    [Guid("BD39D1D2-BA2F-486a-89B0-B4B0CB466891")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface ICLRRuntimeInfo
    {
        HRESULT GetVersionString(StringBuilder pwzBuffer, ref int pcchBuffer);
        HRESULT GetRuntimeDirectory(StringBuilder pwzBuffer, ref int pcchBuffer);
        HRESULT IsLoaded(IntPtr hndProcess, out bool pbLoaded);
        HRESULT LoadErrorString(uint iResourceID, StringBuilder pwzBuffer, out int pcchBuffer, int iLocaleID);
        HRESULT LoadLibrary(string pwzDllName, out IntPtr phndModule);
        HRESULT GetProcAddress(string pszProcName, out IntPtr ppProc);
        HRESULT GetInterface([In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid, [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out object ppUnk);
        HRESULT IsLoadable(out bool pbLoadable);
        HRESULT SetDefaultStartupFlags(int dwStartupFlags, string pwzHostConfigFile);
        HRESULT GetDefaultStartupFlags(out int pdwStartupFlags, StringBuilder pwzHostConfigFile, ref int pcchHostConfigFile);
        HRESULT BindAsLegacyV2Runtime();
        HRESULT IsStarted(out bool pbStarted, out int pdwStartupFlags);
    }

    [DllImport("MSCorEE.dll", SetLastError = true)]
    public static extern HRESULT CLRCreateInstance([In, MarshalAs(UnmanagedType.LPStruct)] Guid clsid, [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out object ppInterface);

    static Guid CLSID_CLRMetaHost = new Guid("{9280188d-0e8e-4867-b30c-7fa83884e8de}");

如何在非Visual Studio计算机上确定.NET CLR版本

1 个答案: