有什么办法来创建像GUID短很短的唯一的代码？ [英] Is there any way to create a short unique code like short GUID?

问题描述

我要创建一个简短的GUID。有什么办法来创建像GUID短很短的唯一的代码？
我想创建一票跟踪号码。

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.

推荐答案

GUID的长度为128位（16字节），因此，如果要创建一个简短的GUID，你必须改变GUID的编码。

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

例如，你可以通过用户的base64或ASCII85。

For instance, you can user base64 or ASCII85.

    /// <summary>
    /// Creates a GUID which is guaranteed not to equal the empty GUID
    /// </summary>
    /// <returns>A 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());
    }

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