C#编写的邮件(Mail)发送发送人的信息从web.config或者从Appp.congfig中获取的方法

最新推荐文章于 2020-10-31 18:46:31 发布

原创最新推荐文章于 2020-10-31 18:46:31 发布 · 1.5k 阅读

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#c# #编码 #邮件

本文介绍如何使用C#实现SMTP邮件的发送功能，包括通过web.config/App.config配置文件读取邮件发送所需的参数，并提供了详细的代码示例。

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1.webform应用程序.

首先写一个邮件发送的方法

/// 使用SMTP发送邮件
      /// </summary>
      /// <param name="smtpHost">smtp服务器信息，格式：Host:Port，Port可省略，采用默认端口25</param>
      /// <param name="attach">附件的地址</param>
      /// <param name="UserName">smtp服务器登录用户名</param>
      /// <param name="UserPass">smtp服务器登录密码</param>
      /// <param name="MailName">发件人昵称</param>
      /// <param name="MailFrom">发件人</param>
      /// <param name="MailTo">收件人，多个可使用,分隔</param>
      /// <param name="strTitle">邮件主题</param>
      /// <param name="strBody">邮件内容</param>
      /// <param name="isHTML">是否为HTML邮件</param>
      /// <returns>发送状态</returns>
      public static bool sendMail(string smtpHost, Attachment[] attach, string UserName, string UserPass, string MailName, string MailFrom, string MailTo, string strTitle, string strBody, bool isHTML)
      {
          System.Net.Mail.MailMessage objMsg = new System.Net.Mail.MailMessage();
          objMsg.From = new System.Net.Mail.MailAddress(MailFrom, MailName);
          objMsg.To.Add(MailTo);
          objMsg.Subject = strTitle;
          objMsg.IsBodyHtml = isHTML;
          objMsg.BodyEncoding = System.Text.Encoding.UTF8;
          objMsg.Body = strBody;
          if (attach.Length > 0)
          {
              foreach (var item in attach)
              {
                  objMsg.Attachments.Add(item);

              }
          }
          string[] smtpHostArr = smtpHost.Split(':');
          string smtpHostIPAdd = String.Copy(smtpHost);
          int smtpHostPort = 25;
          if (smtpHostArr.Length >= 2)
          {
              smtpHostIPAdd = toString(smtpHostArr[0].ToString());
              smtpHostPort = toInt(smtpHostArr[1].ToString());
          }
          System.Net.Mail.SmtpClient objSMTP = new System.Net.Mail.SmtpClient();
          objSMTP.Host = smtpHostIPAdd;
          objSMTP.Port = smtpHostPort;
          objSMTP.Credentials = new System.Net.NetworkCredential(UserName, UserPass);
          try
          {
              objSMTP.Send(objMsg);

              return true;
          }
          catch
          {
              return false;
          }
          return false;
      }
      #endregion

#region toInt
/// <summary>
///得到Int类型的值
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public static int toInt(object v)
{
int r = 0;
try
{
r = Convert.ToInt32(v);
}
catch
{
r = 0;
}
return r;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public static int toInt(string v)
{
return toInt((object)v);
}
#endregion

#region toString
/// <summary>
/// 得到string类型的值
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public static string toString(object v)
{
string r = "";
try
{
r = Convert.ToString(v);
if (r == null)
{
throw new Exception("转换之后值异常！", null);
}
}
catch
{
r = "";
}
return r;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public static string toString(int v)
{
return toString((object)v);
}
#endregion

2.从web.config中获取需要的的信息

webconfig中的数据是

<?xml version="1.0"?>
<configuration>

<system.net>

发送邮件的方法是：

/// <summary>
/// 使用SMTP发送邮件，发件人信息保存在Web.Config中。
/// </summary>
/// <param name="MailTo">收件人，多个可使用,分隔</param>
/// <param name="strTitle">邮件主题</param>
/// <param name="strBody">邮件内容</param>
/// <param name="isHTML">是否为HTML邮件</param>
/// <returns>发送状态</returns>

public static bool sendMail(string MailTo,Attachment[] attach,string strTitle, string strBody, bool isHTML)
{
string appPath = System.Web.HttpContext.Current.Request.ApplicationPath;
Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(appPath);
SmtpSection smtp = (SmtpSection)config.GetSection("system.net/mailSettings/smtp");

string smtpHost = smtp.Network.Host + ":" + smtp.Network.Port;
if (smtpHost == null) { return false; }
string UserName = smtp.Network.UserName;
if (UserName == null) { return false; }
string UserPass = smtp.Network.Password;
if (UserPass == null) { return false; }
string MailName = "";
if (MailName == null) { return false; }
string MailFrom = smtp.From;
if (MailFrom == null) { return false; }
return sendMail(smtpHost,attach,UserName, UserPass, MailName, MailFrom, MailTo, strTitle, strBody, isHTML);
}

3.WinForm中的App.config中获取邮件发送的信息

App.config中的数据与web.config中的数据相同

方法如下：

/// <summary>
      /// 使用SMTP发送邮件，发件人信息保存在Web.Config中。
      /// </summary>
      /// <param name="MailTo">收件人，多个可使用,分隔</param>
      /// <param name="attach">附件的地址</param>
      /// <param name="strTitle">邮件主题</param>
      /// <param name="strBody">邮件内容</param>
      /// <param name="isHTML">是否为HTML邮件</param>
      /// <returns>发送状态</returns>
      public static bool sendMail(string MailTo,Attachment [] attach, string strTitle, string strBody, bool isHTML)
      {
          try
          {

              #region WinForm从app.config中得到发送Mail所需的参数
              System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);//OpenExeConfiguration2个方法的参数我也没搞清楚到底该怎么用。
              MailSettingsSectionGroup mailSettings = NetSectionGroup.GetSectionGroup(config).MailSettings;
              string smtpHost = mailSettings.Smtp.Network.Host + ":" + mailSettings.Smtp.Network.Port;
              if (smtpHost == null) { return false; }
              string UserName = mailSettings.Smtp.Network.UserName;
              if (UserName == null) { return false; }
              string UserPass = mailSettings.Smtp.Network.Password;
              if (UserPass == null) { return false; }
              string MailName = "";
              if (MailName == null) { return false; }
              string MailFrom = mailSettings.Smtp.From;
              if (MailFrom == null) { return false; }
              return sendMail(smtpHost,attach, UserName, UserPass, MailName, MailFrom, MailTo, strTitle, strBody, isHTML);
              #endregion

          }
          catch (Exception e)
          {
              string dd = e.Message;
              throw;
          }

      }