private bool IsValidFileName()
{
bool valid = false;
//must check this first, as trying to use Path.Combine with an illegal file char will throw an argument exception
if (OsirtHelper.IsValidFilename(FileName))
{
string path = Path.Combine(Constants.ContainerLocation, Constants.Directories.GetSpecifiedCaseDirectory(action), FileName + FileExtension);
if (!File.Exists(path))
{
valid = true;
}
}
return(valid);
}