C# 使用 SmtpClient 时“操作超时”
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时间：2020-08-10 01:50:12 来源:igfitidea点击:
"The operations timed out" when using SmtpClient
提问by YU FENG
I am trying to create a small app using C# framework to send email. However, it does not work. The app always gives me "The operations timed out." I do not why.
我正在尝试使用 C# 框架创建一个小应用程序来发送电子邮件。但是，它不起作用。该应用程序总是给我“操作超时”。我不知道为什么。
Here is my code:
这是我的代码：
private void button1_Click(object sender, EventArgs e)
{
MailAddress fromAddress = new MailAddress("[email protected]");
MailAddress toAddress = new MailAddress("[email protected]");
MailMessage mail = new MailMessage(fromAddress.Address, toAddress.Address);
mail.Subject = "Testing";
mail.Body = "contents.";
SmtpClient client = new SmtpClient();
client.Host = "smtp.gmail.com";
client.Port = 587;
client.EnableSsl = true;
client.Timeout = 100;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential("username", "password");
try
{
client.Send(mail);
MessageBox.Show("Mail Sent!", "Success", MessageBoxButtons.OK);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK);
}
}
Thanks!
谢谢！
采纳答案by Imre Greilich
Try to set a higher timeout limit. It is in milliseconds.
尝试设置更高的超时限制。它以毫秒为单位。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Mail;
using System.Net;
namespace GmailSendTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
MailAddress fromAddress = new MailAddress("[email protected]");
MailAddress toAddress = new MailAddress("[email protected]");
MailMessage mail = new MailMessage(fromAddress.Address, toAddress.Address);
mail.Subject = "Testing";
mail.Body = "contents.";
SmtpClient client = new SmtpClient();
client.Host = "smtp.gmail.com";
client.Port = 587;
client.EnableSsl = true;
client.Timeout = 10000;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential("myusername", "mypassword");
try
{
client.Send(mail);
MessageBox.Show("Mail Sent!", "Success", MessageBoxButtons.OK);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK);
}
}
}
}
