public static string Random(this DateTime time, int length = -1, string pre = "R")
{
var dest = DateTime.Now.FormatTime(false) + UUID.NewUUID();
return((pre + (length == -1? dest: dest.Substring(0, length))).ToLower());
}
public static string Random(this DateTime time, int length = -1, string pre = "R")
{
var dest = UUID.NewUUID();
return(pre + (length == -1? dest: dest.Substring(0, length)));
}