asp.net 在线解压缩文件类

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Microsoft.Win32;
using System.Diagnostics;
using System.Web;
    public class Winrar
    {
        /// <summary>
        /// 是否安装了Winrar
        /// </summary>
        /// <returns></returns>
        static public bool Exists()
        {
            RegistryKey the_Reg = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");
            return !string.IsNullOrEmpty(the_Reg.GetValue("").ToString());
        }
        /// <summary>
        /// 打包成Rar
        /// </summary>
        /// <param name="patch"></param>
        /// <param name="rarPatch"></param>
        /// <param name="rarName"></param>
        public string CompressRAR(string patch, string rarPatch, string rarName)
        {
            string the_rar;
            RegistryKey the_Reg;
            object the_Obj;
            string the_Info;
            ProcessStartInfo the_StartInfo;
            Process the_Process;
            try
            {
                the_Reg = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");
                the_Obj = the_Reg.GetValue("");
                the_rar = the_Obj.ToString();
                the_Reg.Close();
                the_rar = the_rar.Substring(1, the_rar.Length - 7);
                Directory.CreateDirectory(patch);
                //命令参数
                //the_Info = " a    " + rarName + "  " + @"C:Test?70821.txt"; //文件压缩
                the_Info = " a    " + rarName + "  " + patch + "  -r"; ;
                the_StartInfo = new ProcessStartInfo();
                the_StartInfo.FileName = the_rar;
                the_StartInfo.Arguments = the_Info;
                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                //打包文件存放目录
                the_StartInfo.WorkingDirectory = rarPatch;
                the_Process = new Process();
                the_Process.StartInfo = the_StartInfo;
                the_Process.Start();
                the_Process.WaitForExit();
                the_Process.Close();
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
            return string.Empty;
        }
        /// <summary>
        /// 解压
        /// </summary>
        /// <param name="unRarPatch"></param>
        /// <param name="rarPatch"></param>
        /// <param name="rarName"></param>
        /// <returns></returns>
        public string unCompressRAR(string unRarPatch, string rarPatch, string rarName)
        {
            string the_rar;
            RegistryKey the_Reg;
            object the_Obj;
            string the_Info;
            try
            {
                the_Reg = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");
                the_Obj = the_Reg.GetValue("");
                the_rar = the_Obj.ToString();
                the_Reg.Close();
                //the_rar = the_rar.Substring(1, the_rar.Length - 7);
                if (Directory.Exists(unRarPatch) == false)
                {
                    Directory.CreateDirectory(unRarPatch);
                }
                the_Info = "x \"" + rarName + "\" \"" + unRarPatch + "\" -y";
                ProcessStartInfo the_StartInfo = new ProcessStartInfo();
                the_StartInfo.FileName = the_rar;
                the_StartInfo.Arguments = the_Info;
                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                the_StartInfo.WorkingDirectory = rarPatch;//获取压缩包路径
                Process the_Process = new Process();
                the_Process.StartInfo = the_StartInfo;
                the_Process.Start();
                the_Process.WaitForExit();
                the_Process.Close();
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
            return string.Empty;
        }
    }