c#之将图片嵌入到 outlook 电子邮件正文

我有以下代码:

string imageSrc = "C:\\Documents and Settings\\menonsu\\Desktop\\screenScrapper\\Bitmap1.bmp"; 
oMsg.HTMLBody = "<HTML><BODY><img src = \" cid:Bitmap1.bmp@embed \"/><br><font size=\"2\" face=\"Courier New\">" + introText + "</font>" + body + "<font size=\"2\" face=\"Courier New\">" + conclText + "</font>" + " </BODY></HTML>"; 
 
Microsoft.Office.Interop.Outlook.Attachment attc = oMsg.Attachments.Add(imageSrc, Microsoft.Office.Interop.Outlook.OlAttachmentType.olEmbeddeditem, null, ""); 
            attc.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x3712001E", "Bitmap1.bmp@EMBED"); 
 
//Send the message. 
oMsg.Save(); 

出于某种原因，当我尝试运行此代码时，电子邮件只显示一个 x...有人知道为什么吗？

请您参考如下方法:

以下是实现此目的的两种方法的工作代码:

using System; 
using Outlook = Microsoft.Office.Interop.Outlook; 
 
namespace ConsoleApp2 
{ 
    class Program 
    { 
        static void Main(string[] args) 
        { 
 
            Method1(); 
            Method2(); 
        } 
 
        public static void Method1() 
        { 
            Outlook.Application outlookApp = new Outlook.Application(); 
            Outlook.MailItem mailItem = outlookApp.CreateItem(Outlook.OlItemType.olMailItem); 
            mailItem.Subject = "This is the subject"; 
            mailItem.To = "john@example.com"; 
            string imageSrc = "D:\\Temp\\test.jpg"; // Change path as needed 
 
            var attachments = mailItem.Attachments; 
            var attachment = attachments.Add(imageSrc); 
            attachment.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x370E001F", "image/jpeg"); 
            attachment.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x3712001F", "myident"); // Image identifier found in the HTML code right after cid. Can be anything. 
            mailItem.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/id/{00062008-0000-0000-C000-000000000046}/8514000B", true); 
 
            // Set body format to HTML 
 
            mailItem.BodyFormat = Outlook.OlBodyFormat.olFormatHTML; 
            string msgHTMLBody = "<html><head></head><body>Hello,<br><br>This is a working example of embedding an image unsing C#:<br><br><img align=\"baseline\" border=\"1\" hspace=\"0\" src=\"cid:myident\" width=\"\" 600=\"\" hold=\" /> \"></img><br><br>Regards,<br>Tarik Hoshan</body></html>"; 
            mailItem.HTMLBody = msgHTMLBody; 
            mailItem.Send(); 
        } 
 
        public static void Method2() 
        { 
 
            // Create the Outlook application. 
            Outlook.Application outlookApp = new Outlook.Application(); 
 
            Outlook.MailItem mailItem = (Outlook.MailItem)outlookApp.CreateItem(Outlook.OlItemType.olMailItem); 
 
            //Add an attachment. 
            String attachmentDisplayName = "MyAttachment"; 
 
            // Attach the file to be embedded 
            string imageSrc = "D:\\Temp\\test.jpg"; // Change path as needed 
 
            Outlook.Attachment oAttach = mailItem.Attachments.Add(imageSrc, Outlook.OlAttachmentType.olByValue, null, attachmentDisplayName); 
 
            mailItem.Subject = "Sending an embedded image"; 
 
            string imageContentid = "someimage.jpg"; // Content ID can be anything. It is referenced in the HTML body 
 
            oAttach.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x3712001E", imageContentid); 
 
            mailItem.HTMLBody = String.Format( 
                "<body>Hello,<br><br>This is an example of an embedded image:<br><br><img src=\"cid:{0}\"><br><br>Regards,<br>Tarik</body>", 
                imageContentid); 
 
            // Add recipient 
            Outlook.Recipient recipient = mailItem.Recipients.Add("john@example.com"); 
            recipient.Resolve(); 
 
            // Send. 
            mailItem.Send(); 
        } 
    } 
}