public byte[] ExtractToMemory(string fileToExtract)
{
UnzipUserFunctions unzipUserFunctions = PrepareCallBack();
UnzipMemoryBuffer buf = new UnzipMemoryBuffer();
// note: on successfull memory allocation and initialization,
// Wiz_UnzipToMemory() returns a Longbool instead of a return code.
// therefore the return value needs to be translated if < PK_BADERR.
UnZipError res = NativeMethods.Wiz_UnzipToMemory(fileName, fileToExtract, ref unzipUserFunctions, ref buf);
if (res == UnZipError.PK_WARN)
{
res = UnZipError.PK_OK;
}
else
if (res == UnZipError.PK_OK)
{
res = UnZipError.PK_ERR;
}
if (res != UnZipError.PK_OK)
{
try
{
NativeMethods.UzpFreeMemBuffer(ref buf);
}
catch
{
}
return(null);
}
if (buf.TotalSize > 0)
{
try
{
byte[] result = new byte[buf.TotalSize];
Marshal.Copy(buf.Buffer, result, 0, buf.TotalSize);
NativeMethods.UzpFreeMemBuffer(ref buf);
return(result);
}
catch
{
return(null);
}
}
else
{
return(null);
}
}
public static extern void UzpFreeMemBuffer(ref UnzipMemoryBuffer buf);
public static extern UnZipError Wiz_UnzipToMemory(string zip, string file, ref UnzipUserFunctions zuf, ref UnzipMemoryBuffer retstr);
