附加多种图像格式,而不仅仅是JPG到电子邮件

时间:2012-02-01 12:33:27

标签: image email png email-attachments

这就是我到目前为止......

 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));

因此它可以很好地附加JPEG图像。但我想改变它,以便它允许PNG和GIF。

2 个答案:

答案 0 :(得分:4)

您现在可能已经找到了这个答案,所以这个答案适用于遇到此问题的其他任何人。

    Image image = ConvertToImage(response);
    Stream imageStream = ToStream(image, ImageFormat.Png);
    LinkedResource logo = new LinkedResource(imageStream, "image/png");

上面是一个为我工作的示例,ConvertToImage返回System.Drawing.Image,ToStream返回System.IO.Stream。

我希望这有帮助!

答案 1 :(得分:1)

试试这个:

 string ext = System.IO.Path.GetExtension(this.imageUpload.PostedFile.FileName);

 string low = ext.ToLower();

 MemoryStream imgStream = new MemoryStream();

                System.Drawing.Image theImage = System.Drawing.Image.FromStream(imageUpload.PostedFile.InputStream);

                string filename = imageUpload.PostedFile.FileName;

              if (low == ".jpg")
                {
                    theImage.Save(imgStream, System.Drawing.Imaging.ImageFormat.Jpeg);

                }
                else if (low == ".gif")
                {
                    theImage.Save(imgStream, System.Drawing.Imaging.ImageFormat.Gif);
                }
                else if (low == ".tif")
                {
                    theImage.Save(imgStream, System.Drawing.Imaging.ImageFormat.Tiff);
                }

            imgStream.Seek(0L, SeekOrigin.Begin);

                if (low == ".jpg")
                {

                    mMailMessage.Attachments.Add(new Attachment(imgStream, filename, System.Net.Mime.MediaTypeNames.Image.Jpeg));
                }

                else if (low == ".gif")
                {

                    mMailMessage.Attachments.Add(new Attachment(imgStream, filename, System.Net.Mime.MediaTypeNames.Image.Gif));
                }

 else if (low == ".tif")
                {

                    mMailMessage.Attachments.Add(new Attachment(imgStream, filename, System.Net.Mime.MediaTypeNames.Image.Tiff));
                }

做.png似乎有点棘手,但至少那是在正确的轨道上。