1、你先搞懂 winrar.exe 的解壓參數(shù)格式,然后把winrar.exe和相關(guān)文件加入到資源文件中,然后調(diào)用 資源文件中的winrar.exe
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2、弄明白rar/zip文件解壓/壓縮方法和格式,自己寫程序 (可能會比較麻煩)
直接讀取 一個gz壓縮文件:
我直接創(chuàng)建了一個內(nèi)容:"asdfasdfasfd" 的 1.txt文件并用gzip 壓縮。
讀?。?/p>
$ zcat 1.txt.gz
asdfasdfasfd
如果內(nèi)容過長可以接 less 查看:
$ zcat 1.txt.gz | less
如果機器安裝有winRar軟件,就可以通過shell來借用他的功能達到壓縮文件的效果;
參考代碼如下:
Dim DeliveryF As String = Server.MapPath("..\Temp\DeliveryFactors.xls") '原始文件 (壓縮前)
Dim TruckInfo As String = Server.MapPath("..\Temp\TruckInformation.xls")
Dim QDetail As String = Server.MapPath("..\Temp\QuotationDetail.xls")
'用shell命令調(diào)用winrar.exe創(chuàng)建壓縮文件()
Dim winRarexe As String = "C:\Program Files\WinRAR\Rar" 'winzip 執(zhí)行文件的位置
Dim wtarget As String = "C:\temp\QuotationVAComparsion.zip" '目地文件 (壓縮后)
Dim command As String = winRarexe " a " wtarget " " DeliveryF " " TruckInfo " " QDetail
'這個命令你可以查看winrar的命令集
Dim retval As Double 'Shell 指令傳回值
retval = Shell(command, AppWinStyle.MinimizedFocus)
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.Text;
using _5dRss.Const;
using _5dRss.lib.Data.Tool;
public partial class admin_admin_dbmanage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//生成備份文件列表
ListBackupFiles();
if (!Page.IsPostBack)
{
Showmsg.Visible = false;
//數(shù)據(jù)庫路徑
lilDBPath.Text = HttpContext.Current.Request.PhysicalApplicationPath + "App_Data\\" + ConfigurationSettings.AppSettings["DBFile"];
//新建一個 FileInfo 對象,并獲得數(shù)據(jù)庫文件的大小,然后轉(zhuǎn)換單位為KB
FileInfo myFileInfo = new FileInfo(lilDBPath.Text);
lilDBSize.Text = Convert.ToString(myFileInfo.Length/1024) + " KB";
//如果兩個參數(shù)都不為空,則繼續(xù)執(zhí)行
if (Request.QueryString["cmd"] != null Request.QueryString["source"] != null)
{
//備份數(shù)據(jù)庫原文件名
string sourceFileName = Request.QueryString["source"];
//如果 cmd 參數(shù)為 DelFile
if (Request.QueryString["cmd"].Equals("DelFile"))
{
//刪除備份數(shù)據(jù)庫文件
File.Delete(HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\" + sourceFileName);
//刷新備份文件列表
ListBackupFiles();
Showmsg.Visible = true;
Showmsg.Text = "div align='center' style='margin-bottom:8px;'img src='images/aL.gif' style='margin-bottom:-6px;'/span class='alertTxt'刪除備份數(shù)據(jù)庫成功!/spanimg src='images/aR.gif' style='margin-bottom:-6px;'//div";
}
//如果 cmd 參數(shù)為 Restore
if (Request.QueryString["cmd"].Equals("Restore"))
{
//用備份文件覆蓋原文件
File.Copy(HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\" + sourceFileName, HttpContext.Current.Request.PhysicalApplicationPath + "App_Data\\" + ConfigurationSettings.AppSettings["DBFile"], true);
//刷新備份文件列表
ListBackupFiles();
Showmsg.Visible = true;
Showmsg.Text = "div align='center' style='margin-bottom:8px;'img src='images/aL.gif' style='margin-bottom:-6px;'/span class='alertTxt'還原備份數(shù)據(jù)庫成功!/spanimg src='images/aR.gif' style='margin-bottom:-6px;'//div";
}
}
}
}
protected void lnkbtnCompactDB_Click(object sender, EventArgs e)
{
//壓縮修復數(shù)據(jù)庫
AccessDBtool.CompactAccessDB(SysConfig.ConnectionString, HttpContext.Current.Request.PhysicalApplicationPath + "App_Data\\" + ConfigurationSettings.AppSettings["DBFile"]);
Showmsg.Visible = true;
Showmsg.Text = "div align='center' style='margin-bottom:8px;'img src='images/aL.gif' style='margin-bottom:-6px;'/span class='alertTxt'壓縮修復數(shù)據(jù)庫成功!/spanimg src='images/aR.gif' style='margin-bottom:-6px;'//div";
}
protected void lnkbtnBackupDB_Click(object sender, EventArgs e)
{
string sourceFileName = HttpContext.Current.Request.PhysicalApplicationPath + "App_Data\\" + ConfigurationSettings.AppSettings["DBFile"];
string destFileName = HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\" + "Backup_";
destFileName += DateTime.Now.ToString("yyyyMMddHHmmss");
destFileName += ".mbk";
//將數(shù)據(jù)庫文件Copy到Backup目錄,如果有重名文件就覆蓋原文件
File.Copy(sourceFileName, destFileName, true);
//生成備份文件列表
ListBackupFiles();
Showmsg.Visible = true;
Showmsg.Text = "div align='center' style='margin-bottom:8px;'img src='images/aL.gif' style='margin-bottom:-6px;'/span class='alertTxt'備份數(shù)據(jù)庫成功!/spanimg src='images/aR.gif' style='margin-bottom:-6px;'//div";
}
/// summary
/// 生成備份文件列表
/// /summary
/// returns文件列表,文件詳細信息及操作選項的HTML代碼/returns
public void ListBackupFiles()
{
//如果目錄不存在則創(chuàng)建次目錄
if (!Directory.Exists(HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\"))
Directory.CreateDirectory(HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\");
DirectoryInfo mydir = new DirectoryInfo(HttpContext.Current.Request.PhysicalApplicationPath + "Backup\\");
StringBuilder sb = new StringBuilder();
foreach (FileInfo f in mydir.GetFiles())
{
sb.Append("a href='backup/" + f.Name + "' target='_blank'img border='0' src='images/mdb.gif' style='margin:4px 3px -3px 0px'/" + f.Name + "/a??a href='?cmd=DelFilesource=" + f.Name + "' title='刪除備份文件'刪除/a | a href='?cmd=Restoresource=" + f.Name + "' title='刪除備份文件'還原數(shù)據(jù)庫/a | " + f.Length/1024 + " KB | " + f.CreationTime + "br /");
}
lilBackupFileList.Text = sb.ToString();
}
}
把下面這句換成你的數(shù)據(jù)庫地址:
//數(shù)據(jù)庫路徑
// lilDBPath.Text = HttpContext.Current.Request.PhysicalApplicationPath + "App_Data\\" + ConfigurationSettings.AppSettings["DBFile"];
Dim?s?As?New?MemoryStream()
Dim?pic?As?New?Bitmap("c:\AeroSnap截圖1.bmp")?
Dim?SngPer?As?Single?=?2?/?10
Dim?PicOld?As?Image?=?pic?
Dim?PicNew?As?New?System.Drawing.Bitmap(PicOld,?PicOld.Width?*?SngPer,?PicOld.Height?*?SngPer)
PicNew.Save(s,?Drawing.Imaging.ImageFormat.Jpeg)
s.Seek(0,SeekOrigin.Begin)
文章標題:vb.net壓縮文件夾,net 壓縮文件
標題鏈接:http://jinyejixie.com/article6/dsecdog.html
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