顯示消息框

Question

namespace WindowsFormsAppEmailClient 
{ 
public partial class Form1 : Form 
{ 
    MailMessage MyMsg = new MailMessage(); 
    public Form1() 
    { 
     InitializeComponent(); 
    } 

    private void Form1_Load(object sender, EventArgs e) 
    { 

    } 

    private void btnSend_Click(object sender, EventArgs e) 
    { 
     SmtpClient MyServer = new SmtpClient("smtp.gmail.com", 587); 

     //defining global MyMsg so we use it in attachment button 
     // MailMessage MyMsg = new MailMessage(); 

     MyMsg.From = new MailAddress( "asharkashif2@gmail.com"); 

     MyMsg.To.Add(tbTo.Text); 

     if (tbcc.Text != "") 
     { 
      MyMsg.CC.Add(tbcc.Text); 
     } 

     MyMsg.Subject = tbSub.Text; 

     //message = body 

     MyMsg.Body = tbMsg.Text; 

     MyServer.EnableSsl = true; 

     //Credentials used for defining User Name + Password 

     MyServer.Credentials = new System.Net.NetworkCredential("asharkashif2@gmail.com", "03456016286"); 
     MyServer.Send(MyMsg); 
    } 

    private void btnAtt_Click(object sender, EventArgs e) 
    { 
     openFileDialog1.ShowDialog(); 
     Attachment myFile = new Attachment(openFileDialog1.FileName); 

     MyMsg.Attachments.Add(myFile); 
    } 
} 
} 

問題是：我想在電子郵件發送成功時顯示成功消息框。請幫忙

Answer 1

基於您的代碼和您張貼在公共論壇您的實際憑據的事實，我會認爲你只是想同步的解決方案，並希望您（阻塞）調用MyServer.Send();

後顯示一個消息框換你發送一個try/catch塊：

// The program will attempt to send a message 
try 
{ 
    MySever.Send(MyMsg); 
    MessageBox.Show("Message sent successfully"); 
} 
catch (Exception ex) 
{ 
    // Whoops there was an error sending the message, better tell the user what happened. 
    MessageBox.Show(String.Format("Message Failed To send because: {0}", ex.message); 
} 

如果不工作，那麼你將需要一些背景添加到您的問題，如任何錯誤，或者你看到異常。

「正確」的方式來做到這一點，雖然是做MyServer.SendAsync(MyMsg)，然後有一個回調在聽取了SMTPClient類提供給您的SendCompleted事件：

MSDN Example of Async Mail Send

Answer 2

你試過MessageBox.Show ??