C#中将字符串转成 Base64 编码（加密--解密）

 1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Base64.aspx.cs" Inherits="Base64" %>
 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 3 <html xmlns="http://www.w3.org/1999/xhtml" >
 4 <head runat="server">
 5     <title> Base64加密解密
 6 </title>
 7 </head>
 8 <body>
 9     <form id="form1" runat="server">
10     <div>
11         <span style="font-size: 24pt; color: #006633" mce_style="font-size: 24pt; color: #006633">           
12                               Base64加密解密</span><br />
13         <br />
14         <br />
15     <asp:TextBox ID="txtChar" runat="server"></asp:TextBox> 
16     <asp:Button ID="btnEncrypt" runat="server" Text="加密" OnClick="btnBase64_Click" />
17         <asp:Button ID="btnExtract" runat="server" OnClick="Button1_Click" Text="解密" /><br />
18         <br />
19     <asp:Label ID="lblMessage" runat="server" Width="211px" ></asp:Label></div>
20     </form>
21 </body>
22 </html>
23 
24 
25 
26 
27 
28 using System;
29 using System.Data;
30 using System.Configuration;
31 using System.Collections;
32 using System.Web;
33 using System.Web.Security;
34 using System.Web.UI;
35 using System.Web.UI.WebControls;
36 using System.Web.UI.WebControls.WebParts;
37 using System.Web.UI.HtmlControls;
38 public partial class Base64 : System.Web.UI.Page
39 {
40     protected void Page_Load(object sender, EventArgs e)
41     {
42     }
43     protected void btnBase64_Click(object sender, EventArgs e)
44     {
45         string a = txtChar.Text;
46         byte[] b = System.Text.Encoding.Default.GetBytes(a);
47         lblMessage.Text =  Convert.ToBase64String(b);
48     }
49     protected void Button1_Click(object sender, EventArgs e)
50     {
51         string a = txtChar.Text;
52         byte[] c = Convert.FromBase64String(a);
53         lblMessage.Text = System.Text.Encoding.Default.GetString(c);
54     }
55 }
C#中将字符串转成 Base64 编码 （加密--解密）

C#中将字符串转成 Base64 编码（加密--解密）
