Rhino Version of 3dm file

Rhino Developer
1

Is there a way to check the Rhino version of a 3dm file using Rhino Common?
Thanks,
Alan

2

Hi @AlanTai,

Something like this should work.

public bool Rhino3dmFileVersion(string fileName, out int fileVersion)
{
  fileVersion = 0;

  if (string.IsNullOrEmpty(fileName))
    return false;

  var extension = System.IO.Path.GetExtension(fileName);
  if (!extension.Equals(".3dm") && !extension.Equals(".3dmbak"))
    return false;

  if (!System.IO.File.Exists(fileName))
    return false;

  var archive_version = Rhino.FileIO.File3dm.ReadArchiveVersion(fileName);
  switch (archive_version)
  {
    case 1:
    case 2:
    case 3:
    case 4:
      fileVersion = archive_version;
      break;
    case 50:
      fileVersion = 5;
      break;
    case 60:
      fileVersion = 6;
      break;
    default:
      return false;
  }

  return true;
}

– Dale

3

Dale,

Thanks.
I did not notice that File3dm.ReadArchiveVersion returns the Rhino version 3dm when I browsed through the help file. I thought it returns something else.

Alan