使用 asp.net 发送邮件和嵌入的图像答案

【问题标题】：sending mail along with embedded image using asp.net使用 asp.net 发送邮件和嵌入的图像
【发布时间】：2010-11-09 22:41:07
【问题描述】：

使用 asp.net 发送邮件和嵌入图像

我已经用过following但是不能用

Dim EM As System.Net.Mail.MailMessage = New System.Net.Mail.MailMessage(txtFrom.Text, txtTo.Text)
        Dim A As System.Net.Mail.Attachment = New System.Net.Mail.Attachment(txtImagePath.Text)
        Dim RGen As Random = New Random()
        A.ContentId = RGen.Next(100000, 9999999).ToString()
        EM.Attachments.Add(A)
        EM.Subject = txtSubject.Text
        EM.Body = "<body>" + txtBody.Text + "<br><img src='cid:" + A.ContentId +"'></body>"
        EM.IsBodyHtml = True
        Dim SC As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient(txtSMTPServer.Text)
        SC.Send(EM)

【问题讨论】：

标签： c# asp.net

【解决方案1】：

感谢其他答案，我设法让它工作-唯一的区别是图像的目录-如果图像与应用程序的目录相同，则可以使用例如：Directory.GetCurrentDirectory() + @"\ClientApp\public\img\blur.jpg

    public void SendMail(string receiver, string subject, string content)
    {
        SmtpClient client = new SmtpClient(emailServiceConfig.SmtpServer);
        client.EnableSsl = true;  // Important ###
        client.UseDefaultCredentials = false;
        client.Credentials = new NetworkCredential(emailServiceConfig.Username, emailServiceConfig.Password);

        MailMessage mailMessage = new MailMessage();
        mailMessage.From = new MailAddress(emailServiceConfig.From);
        mailMessage.To.Add(receiver);
        //mailMessage.Body = content;
        mailMessage.Subject = subject;



    //Adding image =============================================    
    string html = @$"<html><body><img src=""cid:PageScreenshot"">{content}</body></html>";
    AlternateView altView = AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html);
    LinkedResource screenshotRes = new LinkedResource(Directory.GetCurrentDirectory() + @"\ClientApp\public\img\screeenshot2.jpg", MediaTypeNames.Image.Jpeg);
    screenshotRes.ContentId = "PageScreenshot";
    altView.LinkedResources.Add(screenshotRes);
    mailMessage.AlternateViews.Add(altView);


    client.Send(mailMessage);
}

【讨论】：

【解决方案2】：

在搜索和尝试之后必须有四五个“答案”，我觉得我必须分享我最终发现的实际工作，因为很多人似乎不知道如何做到这一点，或者有些人给出了许多其他人的详尽答案问题，加上一些问题，只给出一个 sn-p 答案，然后必须对其进行解释。因为我没有博客，但我想帮助其他人，这里有一些完整的代码来完成这一切。非常感谢 Alex Peck，因为这是他的答案扩展。

inMy.aspx asp.net 文件

<div>
    <asp:LinkButton ID="emailTestLnkBtn" runat="server" OnClick="sendHTMLEmail">testemail</asp:LinkButton>
</div>

c#文件后面的inMy.aspx.cs代码

protected void sendHTMLEmail(object s, EventArgs e)
{
    /* adapted from http://stackoverflow.com/questions/1113345/sending-mail-along-with-embedded-image-using-asp-net 
       and http://stackoverflow.com/questions/886728/generating-html-email-body-in-c-sharp */

    string myTestReceivingEmail = "yourEmail@address.com"; // your Email address for testing or the person who you are sending the text to.
    string subject = "This is the subject line";
    string firstName = "John";
    string mobileNo = "07711 111111";

    // Create the message.
    var from = new MailAddress("emailFrom@address.co.uk", "displayed from Name");
    var to = new MailAddress(myTestReceivingEmail, "person emailing to's displayed Name");
    var mail = new MailMessage(from, to);
    mail.Subject = subject;

    // Perform replacements on the HTML file (which you're using as a template).
    var reader = new StreamReader(@"c:\Temp\HTMLfile.htm");
    string body = reader.ReadToEnd().Replace("%TEMPLATE_TOKEN1%", firstName).Replace("%TEMPLATE_TOKEN2%", mobileNo); // and so on as needed...

    // replaced this line with imported reader so can use a templete .... 
    //string html = body; //"<html><body>Text here <br/>- picture here <br /><br /><img src=""cid:SACP_logo_sml.jpg""></body></html>";

    // Create an alternate view and add it to the email. Can implement an if statement to decide which view to add //
    AlternateView altView = AlternateView.CreateAlternateViewFromString(body, null, MediaTypeNames.Text.Html);

    // Logo 1 //
    string imageSource = (Server.MapPath("") + "\\logo_sml.jpg");
    LinkedResource PictureRes = new LinkedResource(imageSource, MediaTypeNames.Image.Jpeg);
    PictureRes.ContentId = "logo_sml.jpg";
    altView.LinkedResources.Add(PictureRes);

    // Logo 2 //
    string imageSource2 = (Server.MapPath("") + "\\booking_btn.jpg");
    LinkedResource PictureRes2 = new LinkedResource(imageSource2, MediaTypeNames.Image.Jpeg);
    PictureRes2.ContentId = "booking_btn.jpg";
    altView.LinkedResources.Add(PictureRes2);

    mail.AlternateViews.Add(altView);

    // Send the email (using Web.Config file to store email Network link, etc.)
    SmtpClient mySmtpClient = new SmtpClient();
    mySmtpClient.Send(mail);
}

HTMLfile.htm

<html>
<body>
    <img src="cid:logo_sml.jpg">
    <br />
    Hi %TEMPLATE_TOKEN1% .
    <br />
    <br/>
    Your mobile no is %TEMPLATE_TOKEN2%
    <br />
    <br />
    <img src="cid:booking_btn.jpg">
</body>
</html>

在您的 Web.Config 文件中，在您的块中，您需要以下内容才能在 c:\drive 上的 TempMail 文件夹中进行测试

<system.net>
    <mailSettings>
        <smtp deliveryMethod="SpecifiedPickupDirectory" from="madeupEmail@address.com">
            <specifiedPickupDirectory pickupDirectoryLocation="C:\TempMail"/>
        </smtp>
    </mailSettings>
</system.net>

在您的 aspx.cs 代码隐藏文件顶部您需要的唯一其他东西是使用系统包含（如果我错过了一个，您只需右键单击未知类并选择“解决”选项）

using System.Net.Mail;
using System.Text;
using System.Reflection;
using System.Net.Mime; // need for mail message and text encoding
using System.IO;

希望这对某人有所帮助，非常感谢上面的海报给出了完成工作所需的答案（以及我代码中的其他链接）。

它有效，但我愿意改进。

干杯。

【讨论】：

【解决方案3】：

如果您使用的是 .NET 2 或更高版本，您可以像这样使用 AlternateView 和 LinkedResource 类：

string html = @"<html><body><img src=""cid:YourPictureId""></body></html>";
AlternateView altView = AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html);

LinkedResource yourPictureRes = new LinkedResource("yourPicture.jpg", MediaTypeNames.Image.Jpeg);
yourPictureRes.ContentId = "YourPictureId";
altView.LinkedResources.Add(yourPictureRes);

MailMessage mail = new MailMessage();
mail.AlternateViews.Add(altView);

希望你能推断出 VB 等价物。

【讨论】：