public ComClassFactory(Guid rclsid, IntPtr hComObjAddress)
{
Assembly loadedAssm = null;
//We know the type being requested, because we have rclsid.
//We have to look in the registry to figure out what the codebase
//is (you *did* register your COM with the /codebase option, right? :)
ComInfo comInfo = ComInfo.GetComInfoFromClsid(rclsid);
loadedAssm = Assembly.LoadFile(comInfo.CodeBaseLocal);
_BasePath = AppDomain.CurrentDomain.BaseDirectory;
_ComClass = loadedAssm.GetType(comInfo.ClassName);
IntPtr pComAddr = Marshal.GetComInterfaceForObject(this, typeof(IClassFactory));
Marshal.WriteIntPtr(hComObjAddress, pComAddr);
}
public static ComInfo GetComInfoFromClsid(Guid clsId)
{
ComInfo result = new ComInfo();
using (RegistryKey key = RegistryKey.OpenBaseKey(RegistryHive.ClassesRoot, RegistryView.Default))
using (RegistryKey codeBaseKey = key.OpenSubKey(@"CLSID\" + clsId.ToString("B") + @"\InProcServer32"))
{
if (codeBaseKey != null)
{
result.ClsId = clsId;
result.CodeBaseUri = codeBaseKey.GetValue("CodeBase")?.ToString();
result.ClassName = codeBaseKey.GetValue("Class")?.ToString();
result.CodeBaseLocal = new Uri(result.CodeBaseUri).LocalPath;
result.AppDomain = codeBaseKey.GetValue("AppDomain")?.ToString();
}
return result;
}
}