如果服務器上安裝了RAR程序，那麼asp.net可以調用RAR實現文件壓縮與解壓縮。
不過要注意的是，由於Web程序不能直接調用客戶端的程序（除非用ActiveX，ActiveX幾乎被廢棄），所以如果要想實現讓用戶把本地文件用網頁解壓縮只有把文件上傳到服務器上再調用服務器上的RAR壓縮，同理要解壓縮本地的RAR文件可以把文件上傳到服務器解壓再拿回來。
本文講怎麼在服務器端的目錄解壓縮文件！
前台代碼：
<%...@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>服務器端解壓縮 清清月兒 http://blog.csdn.net/21aspnet/</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="壓縮" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="解壓縮" /></div>
</form>
</body>
</html>
後台代碼：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Diagnostics;
public partial class _Default : System.Web.UI.Page
...{
protected void Page_Load(object sender, EventArgs e)
...{
//清清月兒 http://blog.csdn.net/21aspnet/
}
protected void Button1_Click(object sender, EventArgs e)
...{
//壓縮
String the_rar;
RegistryKey the_Reg;
Object the_Obj;
String the_Info;
ProcessStartInfo the_StartInfo;
Process the_Process;
try
...{
the_Reg = Registry.ClassesRoot.OpenSubKey("Applications\WinRAR.exe\Shell\Open\Command");
the_Obj = the_Reg.GetValue("");
the_rar = the_Obj.ToString();
the_Reg.Close();
the_rar = the_rar.Substring(1, the_rar.Length - 7);
the_Info = " a " + " 1.rar " + " " + "C:\1\1.txt";
the_StartInfo = new ProcessStartInfo();
the_StartInfo.FileName = the_rar;
the_StartInfo.Arguments = the_Info;
the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
the_StartInfo.WorkingDirectory = "C:\1";//獲取或設置要啟動的進程的初始目錄。
the_Process = new Process();
the_Process.StartInfo = the_StartInfo;
the_Process.Start();
Response.Write("壓縮成功");
}
catch (Exception ex)
...{
Response.Write(ex.ToString());
}
}
protected void Button2_Click(object sender, EventArgs e)
...{
//解壓縮
String the_rar;
RegistryKey the_Reg;
Object the_Obj;
String the_Info;
ProcessStartInfo the_StartInfo;
Process the_Process;
try
...{
the_Reg = Registry.ClassesRoot.OpenSubKey("Applications\WinRar.exe\Shell\Open\Command");
the_Obj = the_Reg.GetValue("");
the_rar = the_Obj.ToString();
the_Reg.Close();
the_rar = the_rar.Substring(1, the_rar.Length - 7);
the_Info = " X " + " 1.rar " + " " + "C:\1";
the_StartInfo = new ProcessStartInfo();
the_StartInfo.FileName = the_rar;
the_StartInfo.Arguments = the_Info;
the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
the_Process = new Process();
the_Process.StartInfo = the_StartInfo;
the_Process.Start();
Response.Write("解壓縮成功");
}
catch (Exception ex)
...{
Response.Write(ex.ToString());
}
}
}
