復制代碼 代碼如下:
public class LhaUtity
{
///取得DLL的版本
[DllImport("unlha32")]
private static extern UInt16 UnlhaGetVersion();
/// <summary>
/// '取得DLL的執行情況
/// </summary>
/// <returns>是否成功</returns>
[DllImport("unlha32")]
private static extern Boolean UnlhaGetRunning();
/// <summary>
/// '文件檢查
/// </summary>
/// <param name="szFileName"></param>
/// <param name="iMode"></param>
/// <returns></returns>
[DllImport("unlha32")]
private static extern Boolean UnlhaCheckArchive(String szFileName, Int32 iMode);
/// <summary>
/// 文件解壓縮
/// </summary>
/// <param name="hwnd"></param>
/// <param name="szCmdLine"></param>
/// <param name="szOutput"></param>
/// <param name="dwSize"></param>
/// <returns></returns>
[DllImport("unlha32")]
private static extern int Unlha(int hwnd, string szCmdLine, string szOutput, int dwSize);
/// <summary>
/// 需要解壓的文件
/// </summary>
/// <param name="archiveFile">解壓文件路徑</param>
/// <param name="extractDir">解壓到路徑</param>
/// <param name="isDeleteFile">是否刪除</param>
public static bool UnCompress(string archiveFile, string extractDir,bool isDeleteFile)
{
string extractFullPath = string.Empty;
string startPath = AppDomain.CurrentDomain.BaseDirectory;
if (!System.IO.File.Exists(archiveFile))
{
//判斷需要解壓的文件存不存
throw new Exception(string.Format("需要解壓的{0}不存在", archiveFile));
}
try
{
UInt16 ver = LhaUtity.UnlhaGetVersion();
}
catch (Exception ex)
{
throw new Exception("沒找到Unlha32.dll文件");
}
if (UnlhaGetRunning())
{
throw new Exception("DLL正在執行");
}
if (!UnlhaCheckArchive(archiveFile, 0))
{
throw new Exception("文件不能被解壓縮");
}
//解壓的路徑
if (string.IsNullOrEmpty(extractDir))
{
extractFullPath =string.Format(@"{0}{1}\", startPath,archiveFile.Substring(archiveFile.LastIndexOf("\\")+1,archiveFile.IndexOf(".lha")-1-archiveFile.LastIndexOf("\\")));
}
else
{
extractFullPath = extractDir;
}
if (!System.IO.Directory.Exists(extractFullPath))
{
System.IO.Directory.CreateDirectory(extractFullPath);
}
int ret = Unlha(0, string.Format("x \"{0}\" \"{1}\"", archiveFile, extractFullPath), null, 0);
if (ret != 0)
{
if (ret == 32800)
{
throw new Exception("文件解壓縮取消");
}
else
{
throw new Exception("文件解壓縮異常結束");
}
}
else
{
if (isDeleteFile)
{
System.IO.File.Delete(archiveFile);
}
return true;
}
}
}
項目中需要到解壓這類型的文件,無從下手,上網看資料發現是日本常用的壓縮算法之一,
查了很多資料,都沒有好的辦法解包,
後來找到這個dll可以解包的
但是網上的代碼都是VB或者C的
唯有自己寫成C#版本的,其實即使C#調用動態鏈接庫
先到網上下載這個dll,然後把這個DLL放到C:\Windows\System32目錄下