Detect if a MSI component is installed

A C# program for those who don’t know MSI SDK or C++. C++ programmers can find the API inside the msi.h  file in Windows SDK.

static class Program
{
   static int Main(string[] args)
   {
      uint pathSize = 0;
      try
      {
         foreach (string componentId in args)
         {
            MsiInstallState state = MsiLocateComponent(
               componentId, null, ref pathSize);
            if (state != MsiInstallState.Local)
            {
               return ERROR_UNKNOWN_COMPONENT;
            }
         }
      }
      catch (Exception ex)
      {
         Console.WriteLine(ex.Message);
         Console.WriteLine(ex.StackTrace);
         return ERROR_MOD_NOT_FOUND;
      }
      return 0;
   }
   [`DllImport ("msi.dll", CharSet = CharSet.Auto)]
   extern static internal MsiInstallState MsiLocateComponent(string component, string path, ref uint pathSize);
   /// Enumeration of MSI install states.
   internal enum MsiInstallState: int
   {
      Local = 3
   }
   const int ERROR_MOD_NOT_FOUND = 126;
   const int ERROR_UNKNOWN_COMPONENT = 1607;
   }
}

Hard Drive Broke   MFC Feature Pack发布