如何将文件附加到来自网址的电子邮件中 [英] How can I attach a file to an email from a url

问题描述

我有一个上传到服务器上的图片网址（http://xyz.com/photos/pic.png），我正在运行时获取该图片路径。

我想要发送带附件的邮件（带有该图像文件），我有一个接受文件路径作为字符串参数的服务以及其他所需信息（如TO，CC，...）。



如果我将URL（http://xyz.com/photos/pic.png）作为服务的文件路径传递，我会收到错误。

I have a image URL("http://xyz.com/photos/pic.png") that is uploaded on server and I am getting that image path at run time.
I want to sent mail with attachment(with that image file), I have a service that accept file path as string parameter along with other required information(like TO,CC,...).

I am getting error if I am passing URL("http://xyz.com/photos/pic.png") as file path to service.

推荐答案

您可以将图像保存在服务器上，然后将图像路径传递给您的电子邮件服务。

You can save the image on your server and then pass the image path to your Email Service.

public static void SaveImageFromUrl(string imageUrl)
        {
            //Create a request using a URL that can receive a post. 
            WebRequest request = WebRequest.Create(imageUrl);
            // Set the Method property of the request to POST.
            request.Method = "GET";
            WebResponse response = null;
            // Get the response.
            try
            {
                response = request.GetResponse();
            }
            catch (Exception Ex)
            {
                //error
            }
            // Display the status.
            Console.WriteLine(((HttpWebResponse)response).StatusDescription);
            // Get the stream containing content returned by the server.
            Stream dataStream = response.GetResponseStream();
            // Open the stream using a StreamReader for easy access.
            StreamReader reader = new StreamReader(dataStream);
            //path to save image
            string ImagePath = HttpContext.Current.Server.MapPath("~/attachments/") + Guid.NewGuid() + ".jpg";//check your extension

            //Save the image in your server
            using (Stream s = File.Create(ImagePath))
            {
                dataStream.CopyTo(s);
            }

            //Now pass the ImagePath in your Email service
            
        }

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