/// <summary>
/// 功能：解壓zip格式的文件。
/// </summary>
/// <param name="zipFilePath">壓縮文件路徑</param>
/// <param name="unZipDir">解壓文件存放路徑,為空時默認與壓縮文件同一級目錄下，跟壓縮文件同名的文件夾</param>
/// <param name="err">出錯信息</param>
/// <returns>解壓是否成功</returns>
public bool UnZipFile(string zipFilePath, string unZipDir)// , out string err
{
// err = "";
if (zipFilePath == string.Empty)
{
//err = "壓縮文件不能為空！";
return false;
}
if (!File.Exists(zipFilePath))
{
//err = "壓縮文件不存在！";
return false;
}
//解壓文件夾為空時默認與壓縮文件同一級目錄下，跟壓縮文件同名的文件夾
if (unZipDir == string.Empty)
unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
if (!unZipDir.EndsWith("\\"))
unZipDir += "\\";
if (!Directory.Exists(unZipDir))
Directory.CreateDirectory(unZipDir);
try
{
using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath.ToLower())))
{
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName.Length > 0)
{
Directory.CreateDirectory(unZipDir + directoryName);
}
if (!directoryName.EndsWith("\\"))
directoryName += "\\";
if (fileName != String.Empty)
{
using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
{
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}//while
}
}
catch (Exception ex)
{
//err = ex.Message;
return false;
}
return true;
}//解壓結束
