C#中GUID產生格式的四種方法的範例程式碼分享

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這篇文章主要介紹了C# 中GUID產生格式的四種方法,需要的朋友可以參考下

C#中GUID的產生以及格式

1、GUID是在System命名空間下的結構(struct)體,下面展示執行個體。
(1)建立一個GUID協助類(GUIDHelper)

using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace WebDemo.guid{  public class GuIdHelper  {    /// <summary>    /// GUID產生    /// </summary>    /// <param name="format">格式 可填寫N、D、B、P、X</param>    /// <returns></returns>    public static string GetNewGuId(string format="")    {      if (string.IsNullOrWhiteSpace(format))        return Guid.NewGuid().ToString();      else        return Guid.NewGuid().ToString(format);    }  }}

(2)使用執行個體

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Text;namespace WebDemo.guid{  public partial class Index : System.Web.UI.Page  {    protected void Page_Load(object sender, EventArgs e)    {      StringBuilder str = new StringBuilder();      string[] array = {"","N","D","B","P","X" };      foreach (var item in array)      {        if (string.IsNullOrWhiteSpace(item))          str.AppendFormat("預設格式:{0}", GuIdHelper.GetNewGuId());        else          str.AppendFormat("<br />{0}格式:{1}", item, GuIdHelper.GetNewGuId(item));      }      Response.Write(str.ToString());    }  }}

(3)顯示結果

預設格式:4575c4b3-7997-4f11-acd9-f107258e9adcN格式:a53a7186b583483aa4580519034e8095D格式:5ae7f002-a989-4345-864b-3bcfbe09e1daB格式:{d9762660-8461-4c44-b714-8ffad6e1b79c}P格式:(694ce704-0a7d-41d5-a25a-4eaedf7db50d)X格式:{0x75198f26,0xac4e,0x42c8,{0x96,0x88,0xcc,0x91,0xe0,0xa6,0x9b,0x21}

在C#中GUID產生的四種格式

var uuid = Guid.NewGuid().ToString(); // 9af7f46a-ea52-4aa3-b8c3-9fd484c2af12  var uuidN = Guid.NewGuid().ToString("N"); // e0a953c3ee6040eaa9fae2b667060e09   var uuidD = Guid.NewGuid().ToString("D"); // 9af7f46a-ea52-4aa3-b8c3-9fd484c2af12  var uuidB = Guid.NewGuid().ToString("B"); // {734fd453-a4f8-4c5d-9c98-3fe2d7079760}  var uuidP = Guid.NewGuid().ToString("P"); // (ade24d16-db0f-40af-8794-1e08e2040df3)  var uuidX = Guid.NewGuid().ToString("X"); // {0x3fa412e3,0x8356,0x428f,{0xaa,0x34,0xb7,0x40,0xda,0xaf,0x45,0x6f}}
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