If a RAR program is installed on the server, then asp.net can call RAR to implement file compression and decompression.
However, note that because the Web program can not directly invoke the client's program (unless the use of activex,activex almost discarded), so if you want to achieve the user to the local file with a Web page uncompressed only to upload files to the server and then call the server on the RAR compression, In the same way to extract the local RAR file can upload files to the server decompression and then get back.
This article is about how to extract files on the server side of the directory!
Foreground code:
<% ... @ 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 > server-side decompression qingqing Moon http://blog.111cn.net/21aspnet/ </ title >
</ Head >
< Body >
< form ID = "Form1" runat = "Server" >
< Div >
< Asp:button ID = "Button1" runat = "Server" OnClick = "Button1_Click" Text = "Compression" />
< Asp:button ID = "Button2" runat = "Server" OnClick = "Button2_Click" Text = "Decompress" /></ Div >
</ form >
</ Body >
</ HTML >Background code:
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 voidPage_Load (Objectsender, EventArgs e)
...{
// qingqing Moon http://blog.111cn.net/21aspnet/
}
protected voidButton1_Click (Objectsender, EventArgs e)
...{
//Compress
String The_rar;
RegistryKey The_reg;
Object The_obj;
String The_info;
ProcessStartInfo The_startinfo;
Process the_process;
Try
...{
The_reg=Registry.ClassesRoot.OpenSubKey ("Applicationswinrar.exeshellopencommand");
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:.txt";
The_startinfo= NewProcessStartInfo ();
The_startinfo.filename=The_rar;
The_startinfo.arguments=The_info;
The_startinfo.windowstyle=Processwindowstyle.hidden;
The_startinfo.workingdirectory= "C:";//Gets or sets the initial directory of the process to start.
the_process= NewProcess ();
The_process.startinfo=The_startinfo;
The_process.start ();
Response.Write ("Compact Success");
}
Catch(Exception ex)
...{
Response.Write (ex. ToString ());
}
}
protected voidbutton2_click (Objectsender, EventArgs e)
...{
//Decompression
String The_rar;
RegistryKey The_reg;
Object The_obj;
String The_info;
ProcessStartInfo The_startinfo;
Process the_process;
Try
...{
The_reg=Registry.ClassesRoot.OpenSubKey ("Applicationswinrar.exeshellopencommand");
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:";
The_startinfo= NewProcessStartInfo ();
The_startinfo.filename=The_rar;
The_startinfo.arguments=The_info;
The_startinfo.windowstyle=Processwindowstyle.hidden;
The_process= NewProcess ();
The_process.startinfo=The_startinfo;
The_process.start ();
Response.Write ("Decompression succeeded");
}
Catch(Exception ex)
...{
Response.Write (ex. ToString ());
}
}
}Server-side directory:
Workaround for Client decompression:
