Is there any way to create a short unique code like short GUID?

Question

I want to create a short GUID. Is there any way to create a short unique code like short GUID? I want to create a ticket tracking number.

Answer 1

The length of GUID is 128bits(16bytes), so if you want to create a short GUID , you have to change GUID's encoding.

For instance, you can use base64 or ASCII85.

    /// <summary>     /// Creates a GUID which is guaranteed not to equal the empty GUID     /// </summary>     /// <returns>A 24 character long string</returns>     public static string CreateGuid()     {         Guid guid = Guid.Empty;         while (Guid.Empty == guid)         {             guid = Guid.NewGuid();         }          // Uses base64 encoding the guid.(Or  ASCII85 encoded)         // But not recommend using Hex, as it is less efficient.         return Convert.ToBase64String(guid.ToByteArray());     }