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本文实例讲述了C#实现rar压缩与解压缩文件的方法。分享给大家供大家参考。具体分析如下：
此程序利用 WinRAR 程序对文件进行压缩，命令行语法可参考WinRAR中文帮助。
/// 利用 WinRAR 进行压缩
/// </summary>
/// <param name="path">将要被压缩的文件夹（绝对路径）</param>
/// <param name="rarPath">压缩后的 .rar 的存放目录（绝对路径）</param>
/// <param name="rarName">压缩文件的名称（包括后缀）</param>
/// <returns>true 或 false。压缩成功返回 true，反之，false。</returns>
public bool RAR(string path, string rarPath, string rarName)
{
bool flag = false;
string rarexe; //WinRAR.exe 的完整路径
RegistryKey regkey; //注册表键
Object regvalue; //键值
string cmd; //WinRAR 命令参数
ProcessStartInfo startinfo;
Process process;
try
{
regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
regvalue = regkey.GetValue(""); // 键值为 "d:\Program Files\WinRAR\WinRAR.exe" "%1"
rarexe = regvalue.ToString();
regkey.Close();
rarexe = rarexe.Substring(1, rarexe.Length - 7); // d:\Program Files\WinRAR\WinRAR.exe
Directory.CreateDirectory(path);
//压缩命令，相当于在要压缩的文件夹(path)上点右键 ->WinRAR->添加到压缩文件->输入压缩文件名(rarName)
cmd = string.Format("a {0} {1} -r", rarName, path);
startinfo = new ProcessStartInfo();
startinfo.FileName = rarexe;
startinfo.Arguments = cmd; //设置命令参数
startinfo.WindowStyle = ProcessWindowStyle.Hidden; //隐藏 WinRAR 窗口
startinfo.WorkingDirectory = rarPath;
process = new Process();
process.StartInfo = startinfo;
process.Start();
process.WaitForExit(); //无限期等待进程 winrar.exe 退出
if (process.HasExited)
{
flag = true;
}
process.Close();
}
catch (Exception e)
{
throw e;
}
return flag;
}
/// <summary>
/// 利用 WinRAR 进行解压缩
/// </summary>
/// <param name="path">文件解压路径（绝对）</param>
/// <param name="rarPath">将要解压缩的 .rar 文件的存放目录（绝对路径）</param>
/// <param name="rarName">将要解压缩的 .rar 文件名（包括后缀）</param>
/// <returns>true 或 false。解压缩成功返回 true，反之，false。</returns>
public bool UnRAR(string path, string rarPath, string rarName)
{
bool flag = false;
string rarexe;
RegistryKey regkey;
Object regvalue;
string cmd;
ProcessStartInfo startinfo;
Process process;
try
{
regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
regvalue = regkey.GetValue("");
rarexe = regvalue.ToString();
regkey.Close();
rarexe = rarexe.Substring(1, rarexe.Length - 7);
Directory.CreateDirectory(path);
//解压缩命令，相当于在要压缩文件(rarName)上点右键 ->WinRAR->解压到当前文件夹
cmd = string.Format("x {0} {1} -y", rarName, path);
startinfo = new ProcessStartInfo();
startinfo.FileName = rarexe;
startinfo.Arguments = cmd;
startinfo.WindowStyle = ProcessWindowStyle.Hidden;
startinfo.WorkingDirectory = rarPath;
process = new Process();
process.StartInfo = startinfo;
process.Start();
process.WaitForExit();
if (process.HasExited)
{
flag = true;
}
process.Close();
}
catch (Exception e)
{
throw e;
}
return flag;
}
/// <summary>
/// 利用 WinRAR 进行压缩
/// </summary>
/// <param name="path">将要被压缩的文件夹（绝对路径）</param>
/// <param name="rarPath">压缩后的 .rar 的存放目录（绝对路径）</param>
/// <param name="rarName">压缩文件的名称（包括后缀）</param>
/// <returns>true 或 false。压缩成功返回 true，反之，false。</returns>
public bool RAR(string path, string rarPath, string rarName)
{
bool flag = false;
string rarexe; //WinRAR.exe 的完整路径
RegistryKey regkey; //注册表键
Object regvalue; //键值
string cmd; //WinRAR 命令参数
ProcessStartInfo startinfo;
Process process;
try
{
regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
regvalue = regkey.GetValue(""); // 键值为 "d:\Program Files\WinRAR\WinRAR.exe" "%1"
rarexe = regvalue.ToString();
regkey.Close();
rarexe = rarexe.Substring(1, rarexe.Length - 7); // d:\Program Files\WinRAR\WinRAR.exe
Directory.CreateDirectory(path);
//压缩命令，相当于在要压缩的文件夹(path)上点右键 ->WinRAR->添加到压缩文件->输入压缩文件名(rarName)
cmd = string.Format("a {0} {1} -r", rarName, path);
startinfo = new ProcessStartInfo();
startinfo.FileName = rarexe;
startinfo.Arguments = cmd; //设置命令参数
startinfo.WindowStyle = ProcessWindowStyle.Hidden; //隐藏 WinRAR 窗口
startinfo.WorkingDirectory = rarPath;
process = new Process();
process.StartInfo = startinfo;
process.Start();
process.WaitForExit(); //无限期等待进程 winrar.exe 退出
if (process.HasExited)
{
flag = true;
}
process.Close();
}
catch (Exception e)
{
throw e;
}
return flag;
}
/// <summary>
/// 利用 WinRAR 进行解压缩
/// </summary>
/// <param name="path">文件解压路径（绝对）</param>
/// <param name="rarPath">将要解压缩的 .rar 文件的存放目录（绝对路径）</param>
/// <param name="rarName">将要解压缩的 .rar 文件名（包括后缀）</param>
/// <returns>true 或 false。解压缩成功返回 true，反之，false。</returns>
public bool UnRAR(string path, string rarPath, string rarName)
{
bool flag = false;
string rarexe;
RegistryKey regkey;
Object regvalue;
string cmd;
ProcessStartInfo startinfo;
Process process;
try
{
regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
regvalue = regkey.GetValue("");
rarexe = regvalue.ToString();
regkey.Close();
rarexe = rarexe.Substring(1, rarexe.Length - 7);
Directory.CreateDirectory(path);
//解压缩命令，相当于在要压缩文件(rarName)上点右键 ->WinRAR->解压到当前文件夹
cmd = string.Format("x {0} {1} -y", rarName, path);
startinfo = new ProcessStartInfo();
startinfo.FileName = rarexe;
startinfo.Arguments = cmd;
startinfo.WindowStyle = ProcessWindowStyle.Hidden;
startinfo.WorkingDirectory = rarPath;
process = new Process();
process.StartInfo = startinfo;
process.Start();
process.WaitForExit();
if (process.HasExited)
{
flag = true;
}
process.Close();
}
catch (Exception e)
{
throw e;
}
return flag;
}
</div>
在dos或者cmd下用cd命令进入到winrar的安装目录后，输入unrar可出来以下提示：
用法: unrar < 命令> -<开关 1> -<开关 N> <压缩文件> <文件...>
<@ 列表文件...> <解压路径\>
<命令>
e 解压压缩文件到当前目录
l[t,b] 列出压缩文件[技术信息,简洁]
p 打印文件到标准输出设备
t 测试压缩文件
v[t,b] 详细列出压缩文件[技术信息,简洁]
x