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1.ÏÈÒª´ÓÍøÉÏÏÂÔØÒ»¸öicsharpcode.sharpziplib.dll
2.½¨Á¢ÀàAttachmentUnZip£¬ÄÚÈÝÈçÏ£º
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.BZip2;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
using System.IO;
/// <summary>
///AttachmentUnZip µÄժҪ˵Ã÷
/// </summary>
public class AttachmentUnZip
{
    public AttachmentUnZip()
    {
        //
        //TODO: ÔÚ´Ë´¦Ìí¼Ó¹¹Ô캯ÊýÂß¼­
        //
    }
    public static void UpZip(string zipFile)
    {
        string[] FileProperties = new string[2];
        FileProperties[0] = zipFile;//´ý½âѹµÄÎļþ
        FileProperties[1] = zipFile.Substring(0, zipFile.LastIndexOf("\\") + 1);//½âѹºó·ÅÖõÄÄ¿±êĿ¼
        UnZipClass UnZc = new UnZipClass();
        UnZc.UnZip(FileProperties);
    }
}
3.½¨Á¢ÀàUnZipClass£¬ÄÚÈÝÈçÏ£º
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.IO;
using IC