View archive image file

Question

我可以使用C＃在PictureBox中的.zip文件中查看图像（缩略图）而不提取.zip吗？

Answer 1

No, you can't do this without extracting the image from the zip. You don't necessarily need to extract it into a temporary file, you could extract it into a memory stream and then create an image from that stream.

Answer 2

You can extract a single file from a .ZIP into a memory stream. DotNetZip is one library that can do it.

Here is a sample from their Examples page:

using (ZipFile zip = ZipFile.Read(ExistingZipFile))
{
    ZipEntry e = zip["Image.bmp"];
    e.Extract(outputStream);
}

You now have the image in a stream, which you can use to set the source of your PictureBox :

var bmp = new Bitmap(outputStream);
pictureBox.Image = bmp;