这是我目前的进展...
MemoryStream imgStream = new MemoryStream();
System.Drawing.Image img = System.Drawing.Image.FromStream(fuImage.PostedFile.InputStream);
string filename = fuImage.PostedFile.FileName;
img.Save(imgStream, System.Drawing.Imaging.ImageFormat.Jpeg);
imgStream.Seek(0L, SeekOrigin.Begin);
EmailMsg.Attachments.Add(new Attachment(imgStream, filename, System.Net.Mime.MediaTypeNames.Image.Jpeg));
它可以正常附加JPEG图像,但我想要改变它的设置,以便允许PNG和GIF格式的图像。
.Gif
了吗? - Bart