C#怎么解压带密码的压缩文件，后缀名是BDS的！求大神上源码

不清楚Bds的解压方法，我贴一下以前看过的 rar带密码解压
string strtxtPath = "C:\\freezip\\free.txt";
string strzipPath = "C:\\freezip\\free.zip";
System.Diagnostics.Process Process1 = new System.Diagnostics.Process();
Process1.StartInfo.FileName = "Winrar.exe";
Process1.StartInfo.CreateNoWindow = true;
//// 7
////加密压缩c:\freezip\free.txt(即文件夹及其下文件freezip\free.txt)
////到c:\freezip\free.zip 密码为123456 注意参数间不要空格
//Process1.StartInfo.Arguments = " a -p123456 " + strzipPath + " " + strtxtPath;
//// 8
////解压缩加密的c:\freezip\free.rar
////到 c:\freezip\ 密码为123456 注意参数间不要空格
//strtxtPath = "c:\\freezip\\";
//Process1.StartInfo.Arguments = " x -p123456 " + strzipPath + " " + strtxtPath;

开源库 sevenzipsharp