C# 中GUID生成格式有哪些方法

using System;  using System.Collections.Generic;  using System.Linq;  using System.Web;     namespace WebDemo.guid  {    public class GuIdHelper    {      /// <summary>      /// GUID生成      /// </summary>      /// <param name="format">格式 可填写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）使用实例

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("默认格式：{0}", GuIdHelper.GetNewGuId());          else            str.AppendFormat("<br />{0}格式：{1}", item, GuIdHelper.GetNewGuId(item));        }        Response.Write(str.ToString());      }    }  }

（3）显示结果

默认格式：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生成的四种格式

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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