form1.cs

是一个压缩解压缩的标准代码,简单明了, 易用易懂

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using ICSharpCode.SharpZipLib.BZip2;   //SharpZip 的命名空间 
//using System.IO.Compression;           //Gzip 的命名空间

namespace testzip
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	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.TextBox textBox3;
		private System.Windows.Forms.Button button2;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		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
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		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
		/// <summary>
		/// 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。
		/// </summary>
		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.textBox3 = new System.Windows.Forms.TextBox();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(48, 40);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(280, 21);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "textBox1";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(48, 80);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(280, 21);
			this.textBox2.TabIndex = 1;
			this.textBox2.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(120, 192);
			this.button1.Name = "button1";
			this.button1.TabIndex = 2;
			this.button1.Text = "compress";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(48, 120);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(280, 21);
			this.textBox3.TabIndex = 3;
			this.textBox3.Text = "";
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(224, 192);
			this.button2.Name = "button2";
			this.button2.TabIndex = 4;
			this.button2.Text = "uncompress";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(416, 301);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
		//压缩SharpZip
		public  string SharpZipCompress(string uncompressedString)
		{
			byte[] bytData = System.Text.Encoding.Unicode.GetBytes(uncompressedString);
			MemoryStream ms = new MemoryStream();
			Stream s = new BZip2OutputStream(ms);
			s.Write(bytData, 0, bytData.Length);
			s.Close();
			byte[] compressedData = (byte[])ms.ToArray();
			return System.Convert.ToBase64String(compressedData, 0, compressedData.Length);
		}
		//解压SharpZip
		public  string SharpZipDeCompress(string compressedString)
		{
			System.Text.StringBuilder uncompressedString = new System.Text.StringBuilder();
			int totalLength = 0;
			byte[] bytInput = System.Convert.FromBase64String(compressedString); ;
			byte[] writeData = new byte[4096];
			Stream s2 = new BZip2InputStream(new MemoryStream(bytInput));
			while (true)
			{
				int size = s2.Read(writeData, 0, writeData.Length);
				if (size > 0)
				{
					totalLength += size;
					uncompressedString.Append(System.Text.Encoding.Unicode.GetString(writeData, 0, size));
				}
				else
				{
					break;
				}
			}
			s2.Close();
			return uncompressedString.ToString();
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			this.textBox2.Text=this.SharpZipCompress(this.textBox1.Text);
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			this.textBox3.Text=this.SharpZipDeCompress(this.textBox2.Text);
		}
		//压缩Gzip
			/*public static string GzipCompress(string uncompressedString)
			{
				byte[] bytData = System.Text.Encoding.Unicode.GetBytes(uncompressedString);
				MemoryStream ms = new MemoryStream();
				Stream s = new GZipStream(ms, CompressionMode.Compress);
				s.Write(bytData, 0, bytData.Length);
				s.Close();
				byte[] compressedData = (byte[])ms.ToArray();
				return System.Convert.ToBase64String(compressedData, 0, compressedData.Length);
			}*/
		//解压Gzip
		/*public static string GzipDeCompress(string compressedString)
		{
			System.Text.StringBuilder uncompressedString = new System.Text.StringBuilder();
			int totalLength = 0;
			byte[] bytInput = System.Convert.FromBase64String(compressedString); ;
			byte[] writeData = new byte[4096];
			Stream s2 = new GZipStream(new MemoryStream(bytInput), CompressionMode.Decompress);
			while (true)
			{
				int size = s2.Read(writeData, 0, writeData.Length);
				if (size > 0)
				{
					totalLength += size;
					uncompressedString.Append(System.Text.Encoding.Unicode.GetString(writeData, 0, size));
				}
				else
				{
					break;
				}
			}
			s2.Close();
			return uncompressedString.ToString();
		}*/
	 


	}
}