Asp.net simple email sending with attachment Function

 

<Div>

Recipient: <asp: TextBox ID = "txt_toman" runat = "server"> </asp: TextBox>

<Br/>

Topic: <asp: TextBox ID = "txt_title" runat = "server"> </asp: TextBox>

<Br/>

Content: <asp: TextBox ID = "txt_content" runat = "server" Height = "66px"

TextMode = "MultiLine" Width = "194px"> </asp: TextBox>

<Br/>

Attachment: <asp: FileUpload ID = "FileUpload1" runat = "server"/>

<Br/>

<Asp: Button ID = "btn_send" runat = "server" onclick = "btn_send_Click"

Text = "Send"/>

<Asp: Label ID = "lbl_mag" runat = "server" ForeColor = "Red"> </asp: Label>

</Div>

 

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Using System;

Using System. Collections. Generic;

Using System. Linq;

Using System. Web;

Using System. Web. UI;

Using System. Web. UI. WebControls;

Using System. Net. Mail;

Using System. Text;

 

Namespace WebApplication1

{

Public partial class WebForm1: System. Web. UI. Page

{

Protected void Page_Load (object sender, EventArgs e)

{

 

}

 

Protected void btn_send_Click (object sender, EventArgs e)

{

Bool flag = SendMail ("sender address", "sender", "User Name", "password", txt_title.Text, txt_content.Text, txt_toman.Text, FileUpload1 );

If (flag)

{

Lbl_mag.Text = "sent successfully ";

}

Else

{

Lbl_mag.Text = "poor, failed to send! ";

}

}

 

/// <Summary>

/// Simple email sender

/// </Summary>

/// <Param name = "user"> sender address </param>

/// <Param name = "who"> sender </param>

/// <Param name = "name"> sending user name </param>

/// <Param name = "pwd"> user name and password </param>

/// <Param name = "title"> email title </param>

/// <Param name = "body"> sent content </param>

/// <Param name = "shoujian"> recipient address </param>

/// <Param name = "file"> attachment </param>

/// <Returns> whether the message is sent successfully </returns>

 

Public static bool SendMail (string user, string who, string name, string pwd, string title, string body, string shoujian, FileUpload file)

{

 

MailMessage Message = new MailMessage (

New MailAddress (user, // The first is the sender's address,

Who, // The second parameter is the sender

Encoding. UTF8), // Encoding

New MailAddress (shoujian); // recipient's email address

If (file. HasFile)

{

// Add an attachment

If (file. PostedFile! = Null)

{

Attachment attachment = new Attachment (file. PostedFile. InputStream, file. PostedFile. FileName );

Message. Attachments. Add (attachment );

}

}

Message. SubjectEncoding = Encoding. UTF8;

Message. Subject = title; // title

Message. BodyEncoding = Encoding. UTF8;

Message. IsBodyHtml = true;

Message. Body = body; // subject

Message. Priority = MailPriority. High;

 

SmtpClient smtpClient = new SmtpClient ("smtp.163.com", 25 );

// Email server // sending Port

SmtpClient. Credentials = new System. Net. NetworkCredential (name, pwd );

// User name and password

SmtpClient. DeliveryMethod = SmtpDeliveryMethod. Network;

SmtpClient. Timeout = 99999;

Try

{

SmtpClient. Send (Message );

Return true;

}

Catch (Exception)

{

Return false;

}

}

}

}

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