C#实现多文件压缩与解压功能

这个功能没什么可介绍的，大家都懂，直接上代码了。。

实现功能

选择多个文件压缩成ZIP文件和解压ZIP文件

开发环境

开发工具： Visual Studio 2013

.NET Framework版本：4.5

实现代码

//需要添加ICSharpCode.SharpZipLib.Zip.dll到自己项目

private void btnCompressFile_Click(object sender, EventArgs e)
{
    listFiles.Items.Clear();
    OpenFileDialog ofd = new OpenFileDialog();
    ofd.Multiselect = true;
    if (ofd.ShowDialog() == DialogResult.OK)
    {
        listFiles.Items.AddRange(ofd.FileNames);

}
}

private void btnCompress_Click(object sender, EventArgs e)
{
    if (listFiles.Items.Count == 0)
    {
        MessageBox.Show("请先选择需要压缩的文件");
        return;
    }
    SaveFileDialog sfd = new SaveFileDialog();
    sfd.Filter = "压缩文件|*.zip";
    if (sfd.ShowDialog() == DialogResult.OK)
    {
        string[] files = new string[listFiles.Items.Count];
        for (int i = 0; i < listFiles.Items.Count; i++)
        {
            files[i] = listFiles.Items[i].ToString();
        }
        dynamic result;
        using (ZipOutputStream outStream = new ZipOutputStream(File.Create(sfd.FileName)))
        {
            result = Zip(files, outStream, "123");
        }
        MessageBox.Show(result.msg);

}

}

private void btnUnCompressFile_Click(object sender, EventArgs e)
{
    FolderBrowserDialog fbd = new FolderBrowserDialog();
    fbd.ShowNewFolderButton = true;
    if (fbd.ShowDialog() == DialogResult.OK)
    {
        txtOutFile.Text = fbd.SelectedPath;
    }
}

private void btnUnCompress_Click(object sender, EventArgs e)
{
    if (string.IsNullOrWhiteSpace(txtOutFile.Text))
    {
        MessageBox.Show("请先选择解压路径");
        return;
    }
    OpenFileDialog ofd = new OpenFileDialog();
    ofd.Filter = "压缩文件|*.zip";
    if (ofd.ShowDialog() == DialogResult.OK)
    {
        dynamic result = UnZip(ofd.FileName, txtOutFile.Text,"123");
        MessageBox.Show(result.msg);
    }
}
public dynamic Zip(string[] files, ZipOutputStream outStream, string pwd)
{
    try
    {
        for (int i = 0; i < files.Length; i++)
        {
            if (!File.Exists(files[i]))
            {
                throw new Exception("文件不存在");
            }
            using (FileStream fs = File.OpenRead(files[i]))
            {
                byte[] buffer = new byte[fs.Length];
                fs.Read(buffer, 0, buffer.Length);
                if (!string.IsNullOrWhiteSpace(pwd))
                {
                    outStream.Password = pwd;
                }
                ZipEntry ZipEntry = new ZipEntry(Path.GetFileName(files[i]));
                outStream.PutNextEntry(ZipEntry);
                outStream.Write(buffer, 0, buffer.Length);
            }
        }

return new { result = true, msg = "压缩成功" };
    }
    catch (Exception ex)
    {
        return new { result = true, msg = "压缩失败:" + ex.Message };
    }
}

public dynamic UnZip(string zipFile, string outPath, string pwd)
{
    try
    {
        if (!Directory.Exists(outPath))
        {
            Directory.CreateDirectory(outPath);
        }
        using (ZipInputStream zipInputStream = new ZipInputStream(File.OpenRead(zipFile)))
        {
            if (!string.IsNullOrWhiteSpace(pwd))
            {
                zipInputStream.Password = pwd;
            }
            ZipEntry theEntry;
            while ((theEntry = zipInputStream.GetNextEntry()) != null)
            {
                using (FileStream streamWriter = File.Create(outPath + "\\" + theEntry.Name))
                {
                    byte[] data = new byte[1024 * 1024];
                    int dataLength = 0;
                    while ((dataLength = zipInputStream.Read(data, 0, data.Length)) > 0)
                    {
                        streamWriter.Write(data, 0, dataLength);
                    }
                }

}
        }
        return new { result = true, msg = "解压成功" };
    }
    catch (Exception ex)
    {
        return new { result = true, msg = "解压失败:" + ex.Message };
    }
}

实现效果

来源：https://blog.csdn.net/qq_27410185/article/details/121975741