C#压缩单个zip格式文件代码,CSharp代码库,德仔网

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【CSharp】 C#压缩单个zip格式文件
作者:DDT / 发布于2012/1/29/ 1087
<div>?using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.IO;
using System.Reflection;</div>
<div>namespace ZipArchiveTest
{
 static class Program
 {
 [STAThread]
 static void Main()
 {
 Application.EnableVisualStyles();
 Application.SetCompatibleTextRenderingDefault(false);</div>
<div> var form = new Form { Text = "ZipArchiveTest", StartPosition = FormStartPosition.WindowsDefaultBounds };
 var listbox = new ListBox { Dock = DockStyle.Fill, IntegralHeight = false }; 
 listbox.MouseDoubleClick += (object p, MouseEventArgs e) =>
 {
 var path = listbox.SelectedItem as string; if (path == null) return;
 try
 {
 using (var zip = ZipArchive.OpenOnFile((string)listbox.Tag)) 
 {
 var file = zip.GetFile(path);
 if (file.FolderFlag) return;
 var text = new StreamReader(file.GetStream()).ReadToEnd();
 
 var dlg = new Form { Text = Path.Combine((string)listbox.Tag,path), StartPosition = FormStartPosition.WindowsDefaultBounds };
 var textbox = new TextBox { Text = text, MaxLength = 0, Multiline = true, ScrollBars = System.Windows.Forms.ScrollBars.Vertical, Dock = DockStyle.Fill };
 textbox.Select(0, 0); dlg.Controls.Add(textbox);
 dlg.ShowDialog(); 
 }
 }
 catch (Exception ex) { MessageBox.Show(ex.Message, "Error"); }
 };</div>
<div> form.Controls.Add(listbox);
 form.Controls.Add(new ToolStrip(new ToolStripMenuItem("Open Zip Archive...", null, (object p, EventArgs e) =>
 {
 try
 {
 var dlg = new OpenFileDialog { DefaultExt = "zip", Filter = "Zip Archives (*.zip)|*.zip" };
 if (dlg.ShowDialog() != DialogResult.OK) return;</div>
<div> listbox.Items.Clear(); listbox.Tag = dlg.FileName;
 using (var zip = ZipArchive.OpenOnFile(dlg.FileName))
 listbox.Items.AddRange(zip.Files.OrderBy(file => file.Name).Select(file => file.Name).ToArray());
 form.Text = dlg.FileName + " - " + "ZipArchiveTest";
 }
 catch (Exception ex) { MessageBox.Show(ex.Message, "Error"); }
 })));
 Application.Run(form);
 }
 }
<div> class ZipArchive : IDisposable
 {
 private object external;
 private ZipArchive() { }
 public enum CompressionMethodEnum { Stored, Deflated };
 public enum DeflateOptionEnum { Normal, Maximum, Fast, SuperFast };
 //...
 public static ZipArchive OpenOnFile(string path, FileMode mode = FileMode.Open, FileAccess access = FileAccess.Read, FileShare share = FileShare.Read, bool streaming = false)
 {
 var type = typeof(System.IO.Packaging.Package).Assembly.GetType("MS.Internal.IO.Zip.ZipArchive");
 var meth = type.GetMethod("OpenOnFile", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
 return new ZipArchive { external = meth.Invoke(null, new object[] { path, mode, access, share, streaming }) };
 }
 public static ZipArchive OpenOnStream(Stream stream, FileMode mode = FileMode.OpenOrCreate, FileAccess access = FileAccess.ReadWrite, bool streaming = false)
 {
 var type = typeof(System.IO.Packaging.Package).Assembly.GetType("MS.Internal.IO.Zip.ZipArchive");
 var meth = type.GetMethod("OpenOnStream", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
 return new ZipArchive { external = meth.Invoke(null, new object[] { stream, mode, access, streaming }) };
 }
 public ZipFileInfo AddFile(string path, CompressionMethodEnum compmeth = CompressionMethodEnum.Deflated, DeflateOptionEnum option = DeflateOptionEnum.Normal)
 {
 var type = external.GetType();
 var meth = type.GetMethod("AddFile", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
 var comp = type.Assembly.GetType("MS.Internal.IO.Zip.CompressionMethodEnum").GetField(compmeth.ToString()).GetValue(null);
 var opti = type.Assembly.GetType("MS.Internal.IO.Zip.DeflateOptionEnum").GetField(option.ToString()).GetValue(null);
 return new ZipFileInfo { external = meth.Invoke(external, new object[] { path, comp, opti }) };
 }
 public void DeleteFile(string name)
 {
 var meth = external.GetType().GetMethod("DeleteFile", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
 meth.Invoke(external, new object[] { name });
 }
 public void Dispose()
 {
 ((IDisposable)external).Dispose();
 }
 public ZipFileInfo GetFile(string name)
 {
 var meth = external.GetType().GetMethod("GetFile", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
 return new ZipFileInfo { external = meth.Invoke(external, new object[] { name }) };
 }
<div> public IEnumerable<ZipFileInfo> Files
 {
 get
 {
 var meth = external.GetType().GetMethod("GetFiles", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
 var coll = meth.Invoke(external, null) as System.Collections.IEnumerable; //ZipFileInfoCollection
 foreach (var p in coll) yield return new ZipFileInfo { external = p };
 }
 }
 public IEnumerable<string> FileNames
 {
 get { return Files.Select(p => p.Name).OrderBy(p => p); }
 }
<div> public struct ZipFileInfo
 {
 internal object external;
 private object GetProperty(string name)
 {
 return external.GetType().GetProperty(name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).GetValue(external, null);
 }
 public override string ToString()
 {
 return Name;// base.ToString();
 }
 public string Name
 {
 get { return (string)GetProperty("Name"); }
 }
 public DateTime LastModFileDateTime
 {
 get { return (DateTime)GetProperty("LastModFileDateTime"); }
 }
 public bool FolderFlag
 {
 get { return (bool)GetProperty("FolderFlag"); }
 }
 public bool VolumeLabelFlag
 {
 get { return (bool)GetProperty("VolumeLabelFlag"); }
 }
 public object CompressionMethod
 {
 get { return GetProperty("CompressionMethod"); }
 }
 public object DeflateOption
 {
 get { return GetProperty("DeflateOption"); }
 }
 public Stream GetStream(FileMode mode = FileMode.Open, FileAccess access = FileAccess.Read)
 {
 var meth = external.GetType().GetMethod("GetStream", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
 return (Stream)meth.Invoke(external, new object[] { mode, access });
 }
 }
 }
<div>}
</div>
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