Validate Sharepoint filename onupload

Some characters are legal for FAT or NTFS files but illegal for files in Sharepoint documentlibraries. Using the regular upload UI for Sharepoint you'll encounter a rather unpleasant validation error when uploading a file with funky characters. Using the object model will give you a good ole exception.
Have seen a lot of approaches to solving this problem, and implemented a couple myself. Also noticed a method on the SPEncode static class that enabled a clean approach to the problem

private string CleanForUrlAndFileNameUse(string dirtyFileName)
{
	char[] dirtyChars = dirtyFileName.ToCharArray();
	
	foreach (char c in dirtyChars){
		if (!SPEncode.IsLegalCharInUrl(c))
		dirtyFileName = dirtyFileName.Replace(c.ToString(),'');
	}
		
	// Spaces are not appreciated
	dirtyFileName = dirtyFileName.Replace(" ", "");
	// double punctuation marks causes validation error
	while(dirtyFileName.IndexOf("..") != -1)
		dirtyFileName = dirtyFileName.Replace("..", ".");
	return dirtyFileName; 
}