Question

我正在创建一个Windows应用程序，我将在其中发送emailtemplate.htm文件。

我想知道如何在html模板中加载图片。

我试过了

尝试使用img src添加图片无效。

TestEmail.html：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
    <title>Welcome to GrassDew</title>
</head>
<body>
    <div style="border-top:3px solid #22BCE5">&nbsp;</div>
    <span style="font-family:Arial;font-size:10pt">
        A new article has been published .<br /><br />
        <a style="color:#22BCE5" href="https://www.google.com/">NEw Article</a><br />
        <br /><br />
    </span>
    Thanks,<br />
    Team<br />
    <img src="../images/signature.png" /><br /><br />
</body>
</html>

CS代码：

        string strBody = string.Empty;
        Assembly assembly = Assembly.GetExecutingAssembly();
        string assemblyName = assembly.GetName().Name;
        string emailTemplateName = "TestEmail.htm";
        emailTemplateName = assemblyName + "." + emailTemplateName;
        //StreamReader reader = new StreamReader(assembly.GetManifestResourceStream("oMail.Win.TestEmail.htm"));
        using (StreamReader reader = new StreamReader(assembly.GetManifestResourceStream(emailTemplateName)))
        {
            strBody = reader.ReadToEnd();
        }
        strMsg.Body += "<span style = font-family:Calibri;font-size:14pt>Dear " + customrname + "</span><br/>" + strBody;
        strMsg.BodyEncoding = System.Text.Encoding.GetEncoding("utf-8");
        System.Net.NetworkCredential smtpCredential = new System.Net.NetworkCredential(strSMTPServerHostUserName, strSMTPServerHostPassword, strSMTPServerDomain);
        SmtpClient smtpClient = new SmtpClient(strSMTPServerHost, Convert.ToInt32(strSMTPServerPort));
        smtpClient.Credentials = smtpCredential;
        smtpClient.Send(strMsg);
        bEmailSentSuccessful = true;

Answer 1

您可以使用base64字符串作为图片来源。它就像是html中的嵌入式图片。

您的src应该是

src="data:image/jpeg;base64, LzlqLzRBQ...<!-- base64 data -->"

例如：

 Image Red Dot <img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA
AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
    9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" />

您可以在google中找到如何将图片转换为base64字符串。例如，请检查此link

修改

当你发送html作为电子邮件../images/signature.png将无法解决时，它应该是服务器的路径，如“http://myserver/images/image.jpeg”或base64字符串。

如何使用Windows应用程序在html电子邮件模板中添加图像

1 个答案: