1.關於7z

首先在這裡先介紹一下7z壓縮軟體，7z是一種主流的 壓縮格式，它擁有極高的壓縮比。在電腦科學中，7z是一種可以使用多種壓縮演算法進行資料壓縮的檔案格式。主要有以下特點：

• 來源且模組化的元件結構
• 最高的壓縮比
• 強大的AES-256加密
• 可更改配置的壓縮演算法
• 支援操大檔案
• 支援多執行緒壓縮
• 具有多種壓縮檔案格式
  

2.解壓縮實現程式碼

實現對檔案的解壓縮方法是通過cmd命令，呼叫7z程式通過cmd命令實現對檔案進行解壓和壓縮的操作，具體實現程式碼如下：

• 壓縮程式碼

壓縮的cmd命令："7Z a -tzip " + zipPath + " " + filePath;

public ExecutionResult CompressFile(string filePath,string zipPath)//執行DOS命令
    {
      ExecutionResult exeRes = new ExecutionResult();
      exeRes.Status = true;
      try
      {
        Process process = new Process();
        process.StartInfo.FileName = "cmd.exe";
        string message = "";
        string command1 = "c:";
        string command2 = @"cd\";
        string command3 = @"cd C:\Progra~1\7-Zip";
        string command4 = "";


        command4 = "7Z a -tzip " + zipPath + " " + filePath;

        process.StartInfo.UseShellExecute = false;
        process.StartInfo.RedirectStandardInput = true;
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.CreateNoWindow = true;
        process.Start();
        process.StandardInput.WriteLine(command1);
        process.StandardInput.WriteLine(command2);
        process.StandardInput.WriteLine(command3);
        process.StandardInput.WriteLine(command4);
        process.StandardInput.WriteLine("exit");
        message = process.StandardOutput.ReadToEnd(); //要等壓縮完成後才可以來抓取這個壓縮檔案

        process.Close();
        if (!message.Contains("Everything is Ok"))
        {
          exeRes.Status = false;
          exeRes.Message = message;
        }
        else
        {
          exeRes.Anything = zipPath;
        }
      }
      catch (Exception ex)
      {
        exeRes.Message = ex.Message;
      }

      return exeRes;
    }

• 解壓程式碼

解壓的cmd命令："7Z x -tzip " + zipPath + " -o" + filePath + " -y";

public ExecutionResult DeCompressFile( string zipPath,string filePath)//執行DOS命令
    {
      ExecutionResult exeRes = new ExecutionResult();
      exeRes.Status = true;
      try
      {
        Process process = new Process();
        process.StartInfo.FileName = "cmd.exe";
        string message = "";
        string command1 = "c:";
        string command2 = @"cd\";
        string command3 = @"cd C:\Progra~1\7-Zip";
        string command4 = "";


        command4 = "7Z x -tzip " + zipPath + " -o" + filePath + " -y";

        process.StartInfo.UseShellExecute = false;
        process.StartInfo.RedirectStandardInput = true;
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.CreateNoWindow = true;
        process.Start();
        process.StandardInput.WriteLine(command1);
        process.StandardInput.WriteLine(command2);
        process.StandardInput.WriteLine(command3);
        process.StandardInput.WriteLine(command4);
        process.StandardInput.WriteLine("exit");
        //process.WaitForExit();
        message = process.StandardOutput.ReadToEnd();//要等壓縮完成後才可以來抓取這個壓縮檔案

        process.Close();
        if (!message.Contains("Everything is Ok"))
        {
          exeRes.Status = false;
          exeRes.Message = message;
        }
        else
        {
          exeRes.Anything = filePath;
        }
      }
      catch (Exception ex)
      {
        exeRes.Message = ex.Message;
      }

      return exeRes;
    }

以上就是C#呼叫7z實現檔案的壓縮與解壓的詳細內容，更多關於c# 檔案壓縮與解壓的資料請關注我們其它相關文章！