小编Alb*_*chy的帖子

我有一个数据库,我们使用以下代码存储使用DynaZip Max Secure压缩的pdf文件:

MemoryStream msIN = new System.IO.MemoryStream();   //Input MemoryStream
MemoryStream msZip = new System.IO.MemoryStream();  //Compressed MemoryStream
BinaryReader objBinaryReader;
BinaryWriter objBinaryWriter;


public MemoryStream CompressStream(byte[] vbuf)
{
    System.IO.BinaryWriter bw = new System.IO.BinaryWriter(msIN);
    bw.Write(vbuf);
    CDZipSNET dz1 = new CDZipSNET();
    dz1.ZipMemToMemCallback += new CDZipSNET.OnZipMemToMemCallback(this.ZipMemToMemCallback_event);
    dz1.ActionDZ = CDZipSNET.DZACTION.ZIP_MEMTOMEM;
    return msZip;
}

这是ZipMemToMemCallback_event代码:

public void ZipMemToMemCallback_event(CDZipSNET.MEMTOMEMACTION lAction,ref byte[] lpMemBuf,ref uint pdwSize,uint dwTotalReadL,uint dwTotalReadH,uint dwTotalWrittenL,uint dwTotalWrittenH,ref CDZipSNET.MEMTOMEMRESPONSE plRet)
{
    int bytesToRead;

    switch(lAction)
    {
        case CDZipSNET.MEMTOMEMACTION.MEM_READ_DATA:
            if((dwTotalReadL == 0) && (dwTotalReadH == 0))
            {
                msIN.Seek(0, System.IO.SeekOrigin.Begin);
                objBinaryReader …