直接读取zip流并解压

 

MemoryStream ms = new MemoryStream();

                    Stream FileDataStream = m_Upfile.PostedFile.InputStream;

                    this.m_ZipInputStream = new ZipInputStream(FileDataStream);

                    ZipEntry entry;

                    while ((entry = this.m_ZipInputStream.GetNextEntry()) != null)

                    {

 

                        //FileStream fs = File.Create(this.m_ZIPToFolder + entry.Name);

 

                        int size = 2048;

                        byte[] data = new byte[2048];

                        while (true)

                        {

                            size = this.m_ZipInputStream.Read(data, 0, data.Length);

 

 

                            if (size > 0)

                            {

                                ms.Write(data, 0, size);

                            }

                            else

                            {

                                break;

                            }

                        }

                    }

                    DataSet ds = new DataSet();

                    try

                    {

                        ms.Position = 0;//位置重置到0

                        System.Xml.XmlReader reader = System.Xml.XmlReader.Create(ms);

                        ds.ReadXml(reader);

                        reader.Close();

                       

                    }

                    catch

                    {

                        Common.MessageBox.PoP_Notice_Msg("", "压缩包转化为数据集失败！", 0);

                        return;

                    }