尝试创建服务以发送邮件但出现错误
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【中文标题】尝试创建服务以发送邮件但出现错误【英文标题】：Trying to create a service to send mail but getting error 【发布时间】：2017-10-28 05:56:25 【问题描述】：我创建了一个发送邮件的服务，但收到错误：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Web;
using System.Web.Script.Serialization;
using System.Web.Services;
using System.IO;
using System.Net;
using System.Net.Mail;
/// <summary>
/// Summary description for Thankyou
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class Thankyou : System.Web.Services.WebService
public Thankyou()
//Uncomment the following line if using designed components
//InitializeComponent();
using (MailMessage mm = new MailMessage("user@example.net", "user@example.org"))
mm.Subject = "Event Inquiry";
mm.Body = @"<html>
<head><title>[#text:@@hotelname#] Event Inquiry Form</title></head>
<body>
<h1 style = ""font-family:Verdana, Arial, Helvetica, sans-serif; font-weight:normal; font-size:14px; ""> You have received an email via the <b>[Culver Hotel </b> Event Inquiry form.</h1>
<h2 style = ""font-family:Verdana, Arial, Helvetica, sans-serif; font-weight:normal; font-size:12px;"" >
<b> From: </b>[#text:contact_name#] <a href=""mailto:[#text:contact_email#]"" >[#text:contact_email#]</a><br>
<b> Phone: </b> [#text:contact_phone#]<br>
<b> Requested Date: </b> [#text:rfp_requestmonth#] [#text:rfp_requestdate#],[#text:rfp_requestyear#]<br>
<b> Requested Time: </b> [#text:requested_time#]<br>
<b> Number of Guests: </b> [#text:number_guests#]<br>
<b> Comments: </b><br> [#text:contact_comments#]
</h2>
</body>
</html>";
//if (fuAttachment.HasFile)
//
// string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
// mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
//
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential("user@example.net", "passw0rd");
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mm);
//ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email sent.');", true);
[WebMethod]
public string ThanksMail()
//return "Hello World";
Dictionary<string, string> name = new Dictionary<string, string>();
name.Add("1", "Sourav Kayal");
name.Add("2", "Ram mishra");
string myJsonString = (new javascriptSerializer()).Serialize(name);
return myJsonString;
此时我收到一个错误：smtp.Send(mm);，但 HTML 似乎是正确的。
任何帮助将不胜感激。
【问题讨论】：
发布错误本身对试图帮助您的人非常有帮助。 【参考方案1】：你的错误告诉你什么？ （顺便说一句，如果您希望消息接受字符串作为 html，您必须设置 mm.IsBodyHtml = true;，而不是您现在设置的 false
【讨论】：
您好，以下是错误“System.dll 中发生类型为 'System.Net.Mail.SmtpException' 的异常，但未在用户代码中处理附加信息：发送邮件失败。” myaccount.google.com/lesssecureapps 尝试启用此功能，因为您正在尝试从应用程序登录，但它会阻止您并且 SendMail() 最终失败以上是关于尝试创建服务以发送邮件但出现错误的主要内容，如果未能解决你的问题，请参考以下文章