C# 尝试使用c和Ionic.dll将两个zip文件合并为1

这是密码

ZipFile zipnew = ZipFile.Read(strPath);
if (!File.Exists(path))
{
    using (ZipFile zip = new ZipFile())
    {
        zip.Save(path);
    }
}
    string tmpname = fpath + "\\abtemp";
    ZipFile zipold = ZipFile.Read(path);
    foreach (ZipEntry zenew in zipnew)
    {
        string flna = zenew.FileName.ToString();
        string tfn = '@' + flna.Replace("\\", "/");
        Stream fstream = File.Open(tmpname, FileMode.OpenOrCreate, FileAccess.Write);
        zenew.Extract(fstream);
        string l = fstream.Length.ToString();
        fstream.Close();

        using (StreamReader sr = new StreamReader(tmpname))
        {
            var zn = zipold.UpdateEntry(flna, sr.BaseStream);
            sr.Close();
            sr.Dispose();
            fstream.Dispose();
        }
    }

    zipnew.Dispose();
    File.Delete(tmpname);
    File.Delete(strPath);

问题是：我没有收到任何错误，也没有从zipnew合并到zipold的文件。

---

Zipold是一个空白的zip文件

您的代码对我来说不是100%清楚，变量tfn似乎没有被使用，我对所有的dispose/deletes都不太了解。但好的一面是，我确实让您的代码正常工作了，主要问题是您没有调用zipold的save方法

    string path = "d:\\zipold.zip";
    ZipFile zipnew = ZipFile.Read("d:\\zipnew.zip");
    if (!File.Exists(path))
    {
        using (ZipFile zip = new ZipFile())
        {
            zip.Save(path);
        }
    }
    string tmpname = "d:" + "\\temp.dat";
    ZipFile zipold = ZipFile.Read(path);
    foreach (ZipEntry zenew in zipnew)
    {
        string flna = zenew.FileName.ToString();
        //string tfn = '\\' + flna.Replace("\\", "/"); useless line
        Stream fstream = File.Open(tmpname, FileMode.OpenOrCreate, FileAccess.Write);
        zenew.Extract(fstream);
        string l = fstream.Length.ToString();
        fstream.Close();
        using (StreamReader sr = new StreamReader(tmpname))
        {
            var zn = zipold.UpdateEntry(flna, sr.BaseStream);
            zipold.Save();
            sr.Close();
            sr.Dispose();
            fstream.Dispose();
        }

    }
    zipnew.Dispose();

并扩展类

public static class ZipFileExt
{
    public static ZipFile Read2(this ZipFile item, byte[] data)
    {
        return ZipFile.Read(new MemoryStream(data));
    }
    public static ZipFile Marge(this ZipFile item, ZipFile file)
    {
        foreach (var entry in file)
            item.AddEntry(entry.FileName, entry.Extract2Byte());
        return item;
    }
    public static byte[] Extract2Byte(this ZipEntry entry)
    {
        using (var ms = new MemoryStream())
        {
            entry.Extract(ms);
            return ms.ToArray();
        }
    }
}

\p/

public static class ZipFileExt
{
    public static ZipFile Read2(this ZipFile item, byte[] data)
    {
        return ZipFile.Read(new MemoryStream(data));
    }
    public static ZipFile Marge(this ZipFile item, ZipFile file)
    {
        foreach (var entry in file)
            item.AddEntry(entry.FileName, entry.Extract2Byte());
        return item;
    }
    public static byte[] Extract2Byte(this ZipEntry entry)
    {
        using (var ms = new MemoryStream())
        {
            entry.Extract(ms);
            return ms.ToArray();
        }
    }
}