C#中GUID的生成以及格式
阿新 • • 發佈:2019-02-11
1、GUID是在System名稱空間下的結構(struct)體,下面展示例項。
(1)建立一個GUID幫助類(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)使用例項
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-f107258e9adc
N格式:a53a7186b583483aa4580519034e8095
D格式:5ae7f002-a989-4345-864b-3bcfbe09e1da
B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}