Sanitize filename c sharp

Sanitizer.cs

public class Sanitizer
{
    public static string Sanitize(string name)
    {
        string invalidChars = System.Text.RegularExpressions.Regex.Escape( new string( System.IO.Path.GetInvalidFileNameChars() ) );
        string invalidRegStr = string.Format( @"([{0}]*\.+$)|([{0}]+)", invalidChars );

        return System.Text.RegularExpressions.Regex.Replace( name, invalidRegStr, "_" );
    }
}