是否在按下发送电子邮件按钮后调用C#方法或函数？

using System;
using System.Net.Mail;

public class EmailSender
{
    public void SendEmail(string recipient, string subject, string body)
    {
        try
        {
            // 创建SmtpClient对象
            SmtpClient smtpClient = new SmtpClient("smtp.example.com", 587);
            smtpClient.EnableSsl = true;
            smtpClient.Credentials = new System.Net.NetworkCredential("username", "password");

            // 创建MailMessage对象
            MailMessage mailMessage = new MailMessage();
            mailMessage.From = new MailAddress("sender@example.com");
            mailMessage.To.Add(recipient);
            mailMessage.Subject = subject;
            mailMessage.Body = body;

            // 发送邮件
            smtpClient.Send(mailMessage);
        }
        catch (Exception ex)
        {
            Console.WriteLine("邮件发送失败：" + ex.Message);
        }
    }
}