C#简单实现在网页上发邮件的案例

1.前端HTML使用了Jquery，大家如果做演示不要忘记引入Jquery的库

  
  
  


  

    
smtp:
      

      
    
    
    
from addr:
      

      
    

    
to addr:
      

      
    

    
title:
      

      
    

    
content:
      

      
      
    
    

      

        
      
    
  

2.后台代码是一般处理类 ashx，供前台异步调用

<%@ WebHandler Language="C#" class="Handler" %>

using System;
using System.Web;
using Utility;
public class Handler : IHttpHandler {
  
  public void ProcessRequest (HttpContext context)
  {
    context.Response.ContentType = "text/plain";
    string smtp = HttpContext.Current.Request.Form["smtp"].ToString();
    string title = HttpContext.Current.Request.Form["title"].ToString();
    string content = HttpContext.Current.Request.Form["content"].ToString();
    string from = HttpContext.Current.Request.Form["from"].ToString();
    string to = HttpContext.Current.Request.Form["to"].ToString();
    
    
    try
    {
      EmailClient emailClient = new EmailClient(smtp);// localhost::25
      emailClient.SendEmail(from, to, title, content);
      System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
      System.Collections.Generic.Dictionary d = new System.Collections.Generic.Dictionary();
      d.Add("message", "success");
      d.Add("success", true);
      context.Response.Write(jss.Serialize(d));
    }
    catch (Exception ex)
    {
      System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
      System.Collections.Generic.Dictionary d = new System.Collections.Generic.Dictionary();
      d.Add("message", ex.Message);
      d.Add("success", true);
      context.Response.Write(jss.Serialize(d));
    }
    
      
  }
 
  public bool IsReusable {
    get {
      return false;
    }
  }

}

3.最后是用到的SMTP辅助类

public class EmailClient
  {
    private string smtpServer;
    private string senderAddress;

    
    public EmailClient(string smtpServer)
    {
      this.smtpServer = smtpServer;
      this.senderAddress = string.Empty;
    }

 　　public void SendEmail(string fromAddress, string toAddress, string subject, string messageBody)
    {
      SmtpClient smtp = new SmtpClient(smtpServer);

      MailMessage email = new MailMessage();

      email.From = new MailAddress(fromAddress);
      email.To.Add(toAddress);
      email.Subject = subject;
      email.Body = messageBody;

      smtp.Send(email);
    }

}