public override void Reset ()
{
addExtension = true;
checkFileExists = false;
checkPathExists = true;
DefaultExt = null;
dereferenceLinks = true;
FileName = null;
Filter = String.Empty;
FilterIndex = 1;
InitialDirectory = null;
restoreDirectory = false;
SupportMultiDottedExtensions = false;
ShowHelp = false;
Title = null;
validateNames = true;
UpdateFilters ();
}