?? form1.cs
字號:
?using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Security.Cryptography;
using System.IO;
using System.Globalization;
namespace Encrypt
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
String text = this.richTextBox1.Text;
if (text.Trim().Length == 0)
{
MessageBox.Show("請輸入要加密或解密的字符!", "系統提示");
return;
}
try
{
String temp = Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(text)).Replace("+", "%2B");
temp = temp.Insert(1, "Q");
temp.Substring(0, 1);
this.richTextBox2.Text = temp;
}
catch (Exception ex)
{
MessageBox.Show("解密失敗,請確認你輸入的加密字符是否正確!", "系統提示");
}
}
private void button2_Click(object sender, EventArgs e)
{
String text = this.richTextBox1.Text;
if (text.Trim().Length == 0)
{
MessageBox.Show("請輸入要加密或解密的字符!", "系統提示");
return;
}
try
{
text = text.Remove(1, 1);
this.richTextBox2.Text = System.Text.Encoding.Default.GetString(Convert.FromBase64String(text.Replace("%2B", "+")));
}
catch (Exception ex)
{
MessageBox.Show("解密失敗,請確認你輸入的解密字符是否正確!", "系統提示");
}
}
private void button3_Click(object sender, EventArgs e)
{
AboutBox1 about = new AboutBox1();
about.ShowDialog();
}
}
}
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