Sample code sharing for four methods of GUID generation format in C #

This article mainly describes the C # GUID generation format of four methods, the need for friends can refer to the following

The generation and format of GUIDs in C #

1, the GUID is the structure (struct) body under the System namespace, the example is shown below.
(1) Create a GUID helper Class (Guidhelper)

Using system;using system.collections.generic;using system.linq;using system.web;namespace WebDemo.guid{public  Class Guidhelper {//<summary>//GUID generated//</summary>//    <param name= " Format > can fill in 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) Examples of use

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 ("default format: {0}", Guidhelper.getnewguid ());        Else          str. AppendFormat ("<br/>{0} format: {1}", Item, GUIDHELPER.GETNEWGUID (item));      }      Response.Write (str. ToString ());}}}  

(3) Show results

Default format: 4575C4B3-7997-4F11-ACD9-F107258E9ADCN format: a53a7186b583483aa4580519034e8095d format: 5ae7f002-a989-4345-864b-3bcfbe09e1dab format: {d9762660-8461-4c44-b714-8ffad6e1b79c} P Format: (694ce704-0a7d-41d5-a25a-4eaedf7db50d) x format: {0x75198f26,0xac4e,0x42c8,{0x96,0x88,0xcc,0x91,0xe0,0xa6,0x9b, 0x21

Four formats that are generated by GUIDs in C #

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}}