我在用 c# 发送 HTML 邮件时遇到了一个奇怪的问题。
基本上，我每天早上都在尝试通过电子邮件向自己发送天气信息，然后我首先从 ftp 站点下载 HTML 标记中的天气。
获得源文件后，我将其读入字符串并使用以下代码创建 mailMessage。
string body = File.ReadAllText(@"C:\Weather.htm");
MailMessage mailMessage = new MailMessage();
SmtpClient mailClient = new SmtpClient("smtp.gmail.com");
mailClient.Credentials = new NetworkCredential(username, password);
mailClient.Port = 587;
mailClient.EnableSsl = true;
mailMessage.From = new MailAddress(emailFrom);
mailMessage.IsBodyHtml = true;
mailMessage.To.Add(emailTo);
mailMessage.Subject = "Test Email";
mailMessage.SubjectEncoding = System.Text.Encoding.Unicode;
mailMessage.Body = body;
mailMessage.BodyEncoding = System.Text.Encoding.Unicode;
mailClient.Send(mailMessage);
问题是，虽然电子邮件以 HTML 格式到达，但所有的 DIV / CSS 都没有得到尊重，而且看起来很奇怪。我试图通过电子邮件发送到不同的电子邮件地址和客户端，它看起来和尝试不同的编码一样。
所以沿着这条线的某个地方出了点问题。
有谁知道如何解决这个问题并获得格式正确的电子邮件？
好形象
坏图像
源标记
<html xmlns="http://www.w3.org/1999/xhtml"><head xmlns="">
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Sydney Forecast</title>
<link rel="stylesheet" type="text/css" href="http://www.bom.gov.au/watl/standard/common.css">
<link rel="stylesheet" type="text/css" href="http://www.bom.gov.au/weather-services/styles/text-gfe.css">
</head>
<body>
<div class="product">
<p xmlns="" class="p-id">IDN10064</p>
<p xmlns="" class="source">Australian Government Bureau of Meteorology<br/>New South Wales
<h2 xmlns="">Updated Sydney Forecast</h2>
<p xmlns="" class="date">Issued at 8:11 am EST on Thursday 9 September 2010<br>for the period until midnight EST Wednesday 15 September 2010.</p>
<h3 xmlns="" class="warning">Warning Summary at issue time</h3>
<p xmlns="">Nil.</p>
<p xmlns="" class="p-id">Details of warnings are available on the Bureau's website www.bom.gov.au, by telephone 1300-659-218* or through some TV and radio broadcasts.</p>
<h3 xmlns="" class="day">Forecast for the rest of Thursday</h3>
<p xmlns="" class="sl">Cloud increasing. Areas of rain this afternoon and evening. Winds northerly averaging up to 20 km/h.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">A little rain later.</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
</div>
<div class="line">
<div class="rain_l">Chance of any rainfall:</div>
<div class="rain_prob_v">30%</div>
<div class="rain_l">Chance of no rainfall:</div>
<div class="rain_prob_v">70%</div>
<div class="rain_l">Rainfall:</div>
<div class="rain_v">0 to 1 mm</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Late rain.</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
</div>
<div class="line">
<div class="rain_l">Chance of any rainfall:</div>
<div class="rain_prob_v">30%</div>
<div class="rain_l">Chance of no rainfall:</div>
<div class="rain_prob_v">70%</div>
<div class="rain_l">Rainfall:</div>
<div class="rain_v">0 to 1 mm</div>
</div>
<div class="line">
<div>
<h4>Around Sydney</h4>
</div>
</div>
<div class="line">
<div class="name">Liverpool</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
<div class="name">Parramatta</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
</div>
<div class="line">
<div class="name">Terrey Hills</div>
<div class="max_l">Max</div>
<div class="max_v">19</div>
<div class="name">Campbelltown</div>
<div class="max_l">Max</div>
<div class="max_v">19</div>
</div>
<div class="line">
<div class="name">Richmond</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
<div class="name">Bondi</div>
<div class="max_l">Max</div>
<div class="max_v">19</div>
</div>
</div>
<p xmlns="" class="sl">Fire Danger: Low to Moderate [0-11]</p>
<p xmlns="" class="sl">UV Alert from 9:10 am to 2:40 pm, UV Index predicted to reach 6 [High]</p>
<h3 xmlns="" class="day">Forecast for Friday</h3>
<p xmlns="" class="sl">Partly cloudy. Winds west to northwesterly averaging up to 25 km/h tending westerly up to 40 km/h around midday.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Becoming windy.</div>
<div class="min_l">Min</div>
<div class="min_v">13</div>
<div class="max_l">Max</div>
<div class="max_v">22</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Partly cloudy. Becoming windy.</div>
<div class="min_l">Min</div>
<div class="min_v">11</div>
<div class="max_l">Max</div>
<div class="max_v">23</div>
</div>
</div>
<h3 xmlns="" class="day">Forecast for Saturday</h3>
<p xmlns="" class="sl">Sunny. Winds west to southwesterly averaging up to 25 km/h tending mainly southeast to southwesterly up to 20 km/h around midday.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">12</div>
<div class="max_l">Max</div>
<div class="max_v">21</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">9</div>
<div class="max_l">Max</div>
<div class="max_v">22</div>
</div>
</div>
<h3 xmlns="" class="day">Forecast for Sunday</h3>
<p xmlns="" class="sl">Mostly sunny. Light winds.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Mostly sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">10</div>
<div class="max_l">Max</div>
<div class="max_v">21</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">6</div>
<div class="max_l">Max</div>
<div class="max_v">23</div>
</div>
</div>
<h3 xmlns="" class="day">Forecast for Monday</h3>
<p xmlns="" class="sl">Becoming cloudy. Isolated showers later in the day. Winds west to southwesterly averaging up to 25 km/h.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Shower or two developing.</div>
<div class="min_l">Min</div>
<div class="min_v">13</div>
<div class="max_l">Max</div>
<div class="max_v">22</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Shower or two developing.</div>
<div class="min_l">Min</div>
<div class="min_v">10</div>
<div class="max_l">Max</div>
<div class="max_v">22</div>
</div>
</div>
<h3 xmlns="" class="day">Forecast for Tuesday</h3>
<p xmlns="" class="sl">Sunny. Light winds tending north to northeasterly up to 20 km/h during the evening.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">12</div>
<div class="max_l">Max</div>
<div class="max_v">19</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Sunny.</div>
<div class="min_l">Min</div>
<div class="min_v">10</div>
<div class="max_l">Max</div>
<div class="max_v">19</div>
</div>
</div>
<h3 xmlns="" class="day">Forecast for Wednesday</h3>
<p xmlns="" class="sl">Isolated showers during the morning. Sunny afternoon. Winds northwesterly averaging up to 25 km/h tending westerly up to 35 km/h during the morning.</p>
<div xmlns="" class="grid">
<div class="line space-b">
<div class="name">City Centre</div>
<div class="wx">Shower or two clearing.</div>
<div class="min_l">Min</div>
<div class="min_v">12</div>
<div class="max_l">Max</div>
<div class="max_v">20</div>
</div>
<div class="line space-b">
<div class="name">Penrith</div>
<div class="wx">Shower or two clearing.</div>
<div class="min_l">Min</div>
<div class="min_v">8</div>
<div class="max_l">Max</div>
<div class="max_v">21</div>
</div>
</div>
<p xmlns="" class="dt">The next routine forecast will be issued at 4:20 pm EST Thursday.</p>
<p xmlns="" class="p-id">* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones.</p>
</div>
</html>