这篇文章介绍了,C#调用动态unlha32.dll解压Lha后缀的打包文件,有需要的朋友可以参考一下
复制代码 代码如下: public class LhaUtity { ///取得DLL的版本 [DllImport("unlha32")] private static extern UInt16 UnlhaGetVersion();
/// <summary> /// '取得DLL的执行情况 /// </summary> /// <returns>是否成功</returns> [DllImport("unlha32")] private static extern Boolean UnlhaGetRunning();
/// <summary> /// '文件检查 /// </summary> /// <param name="szFileName"></param> /// <param name="iMode"></param> /// <returns></returns> [DllImport("unlha32")] private static extern Boolean UnlhaCheckArchive(String szFileName, Int32 iMode);
/// <summary> /// 文件解压缩 /// </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> /// 需要解压的文件 /// </summary> /// <param name="archiveFile">解压文件路径</param> /// <param name="extractDir">解压到路径</param> /// <param name="isDeleteFile">是否删除</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)) { //判断需要解压的文件存不存 throw new Exception(string.Format("需要解压的{0}不存在", archiveFile)); }
try { UInt16 ver = LhaUtity.UnlhaGetVersion(); } catch (Exception ex) { throw new Exception("没找到Unlha32.dll文件"); }
if (UnlhaGetRunning()) { throw new Exception("DLL正在执行"); }
if (!UnlhaCheckArchive(archiveFile, 0)) { throw new Exception("文件不能被解压缩"); }
//解压的路径 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("文件解压缩取消"); } else { throw new Exception("文件解压缩异常结束");
}
} else { if (isDeleteFile) { System.IO.File.Delete(archiveFile); }
return true; }
}
}
项目中需要到解压这类型的文件,无从下手,上网看资料发现是日本常用的压缩算法之一,
查了很多资料,都没有好的办法解包,
后来找到这个dll可以解包的
但是网上的代码都是VB或者C的
唯有自己写成C#版本的,其实即使C#调用动态链接库
先到网上下载这个dll,然后把这个DLL放到C:\Windows\System32目录下 |