急,关于读取压缩文件的问题

Question

请教各位,我在读取压缩文件包中的一个文件时出错.
这句读不出数据流: inputStream = zip.GetInputStream(entry);
代码如下:
 public List<ReportInputResult> SubmitReport(System.IO.Stream stream, DateTime reportDuration, Guid reportOrganID, int adminorganType, ReportPeriod period)
        {
            List<ReportInputResult> resultList = new List<ReportInputResult>();            //从压缩包中读取报表编码            ZipFile zip = new ZipFile(stream);
            
            foreach (ZipEntry entry in zip)
            {
                if (entry.IsFile && (entry.Name.EndsWith(".xls") || entry.Name.EndsWith(".XLS")))                {
                    ReportInputResult result = new ReportInputResult();
                    Stream inputStream;
                    ExcelDataSheetReader excelSheet;
                    string reportType;
                    try//判断上传的文件是否是EXCEL文件
                    {
                        inputStream = zip.GetInputStream(entry);
                        excelSheet = new ExcelDataSheetReader(inputStream, 0);
                        excelSheet.SkipToRow(1);
                        excelSheet.SkipToColumn(1);
                        reportType = excelSheet.Read();
                    }
                    catch(Exception ex)
                    {
                        result.ReportName = entry.Name;
                        result.ErrorMessage = "上传失败：文件格式无法识别！" + ex.Message;
                        result.IsSuccess = false;
                        resultList.Add(result);
                        continue;
                    }
                 }
            }
            return resultList;
        }
我在调试时有以下信息:“zip.GetInputStream(entry).ReadTimeout”引发了“System.InvalidOperationException”类型的异常

Answer 1

System.IO.Stream str2;
            System.IO.FileStream fs = new System.IO.FileStream("c:\\123\\123.zip", FileMode.Open);
            ZipFile zip = new ZipFile(fs);
            foreach (ZipEntry entry in zip)
            {
                str2 = zip.GetInputStream(entry);
            }            fs.Close(); //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!可能因为你的流没有关闭
//我试了,如果不关闭流很有可能第二次打不开

Answer 2

str2 最好用完了也立即关闭

Answer 3

可以用：SharpZiplib
http://www.icsharpcode.net/OpenSource/SharpZipLib/