C#中GUID的生成以及格式

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1、GUID是在System命名空间下的结构(struct)体,下面展示实例。
(1)创建一个GUID帮助类(GUIDHelper)

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}
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