using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Security.Cryptography;
using System.IO;

namespace 对称加密应用
{
///
/// Form1 的摘要说明。
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
///
/// 必需的设计器变量。

private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.OpenFileDialog openfile;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.SaveFileDialog savefile;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.CheckBox checkBox1;

//创建实例
RijndaelManaged rij = new RijndaelManaged();//
//全局变量，标记文件的扩展名
private static string ext=null;
//标记加密成功与否
private static bool enresult = false;
//标记解密成功与否的标记
private static bool deresult = false;

///
private System.ComponentModel.Container components = null;

public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

///
/// 清理所有正在使用的资源。
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
///
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
///
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.textBox3 = new System.Windows.Forms.TextBox();
this.openfile = new System.Windows.Forms.OpenFileDialog();
this.button3 = new System.Windows.Forms.Button();
this.savefile = new System.Windows.Forms.SaveFileDialog();
this.button4 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(88, 96);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(168, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(88, 136);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(168, 21);
this.textBox2.TabIndex = 1;
this.textBox2.Text = "";
//
// button1
//
this.button1.Location = new System.Drawing.Point(88, 200);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "加密";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(192, 200);
this.button2.Name = "button2";
this.button2.TabIndex = 3;
this.button2.Text = "解密";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// textBox3