如何發送電子郵件？

Question

我有這樣的數據表。

我有一個這樣的Excel工作表。現在我正在讀取數據並轉換成如下數據表：

id Name  MailID    Body 

123 kirna kiran@example.com  happy birthday 
234 ram  ram@example.com  happy birthday 
345 anu  anitha@example.com how is the day going 
357 rashmi rashmi@example.com work need to be completed 

現在我要發送電子郵件給以上所有人。

任何人都可以幫助我如何從數據表中讀取數據，並通過指定的正文向他們發送郵件。

任何幫助將是偉大的。

謝謝。

Answer 1

System.Net.Mail.SmtpClient client = 
    new System.Net.Mail.SmtpClient("yoursmtp.server.com"); 
// foreach row in datatable{ 
System.Net.Mail.MailMessage message = 
    new System.Net.Mail.MailMessage("Your Name <from@domain.com>", "Recipients Name <to@domain.com>", "subject", "body"); 
// } 
client.Send(message); 

Answer 2

您可以使用SmtpClient類：

foreach (DataRow row in datatable.Rows) 
{ 
    var name = (string)row["Name"]; 
    var email = (string)row["MailID"]; 
    var body = (string)row["Body"]; 

    var message = new MailMessage(); 
    message.To.Add(email); 
    message.Subject = "This is the Subject"; 
    message.From = new MailAddress("from@yourdomain.com"); 
    message.Body = body; 
    var smtpClient = new SmtpClient("yoursmtphost"); 
    smtpClient.Send(message); 
} 

備註1：在.NET 4.0中，SmtpClient實現IDisposable，所以一定要正確處理它。

備註2：在.NET 4.0之前的類SmtpClient中有bug類，它沒有正確發送QUIT命令到SMTP服務器。

Answer 3

private IEnumerable<Tuple<string,string,string>> GetMessages() 
{ 
using (var connection = new SqlConnection("connection string") 
using (var command = connection.CreateCommand()) 
{ 
    command.CommandText = "SELECT Name, MailID, Body FROM table"; 

    connection.Open() 
    using (var reader = command.ExecuteReader()) 
    { 
     while (reader.Read()) 
     { 
      yield return new Tuple<string,string,string>(
       reader.GetString(0), // name 
       reader.GetString(1) // email 
       reader.GetString(2)); // body 
     } 
    } 
} 
} 

foreach(var tuple in GetMessages()) 
{ 
    SendMessage(tuple.Item1, tuple.Item2, tuple.Item3); 
} 

private void SendMessage(string name, string email, string body) 
{ 
    using (var smtpClient = new SmtpClient("smtp.example.com")) 
    { 
     smtpClient.Send(new MailMessage(
      name, // from 
      email, // to 
      "Subject", 
      body)); 
    } 
} 

Answer 4

您可以從數據庫發送電子郵件。這些文章可能會幫助你。

http://msdn.microsoft.com/en-us/library/ms190307.aspx
http://msdn.microsoft.com/en-us/library/ms189505.aspx