How to send Email with an Attachment in C#

private void btnSend_Click(object sender, EventArgs e) //writing code in Button btnSend

{

try

{

//MailMessage class are used to construct e-mail messages

MailMessage message = new MailMessage();

// Collaboration Data Objects (CDO) library allows you to access the Global Address

// List and other server objects, in addition to the contents of mailboxes

message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", 1);

//basic authentication

message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "[email protected]");

//set your username here

message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "From-Password");

//set your password here

message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "True");

message.From = "[email protected]";

message.To = "[email protected]";

message.Subject = txtSubject.Text;

message.Body = txtMessage.Text;

if (!txtAttach.Text.Equals("")) //adding attachments.

{

MailAttachment attach = new MailAttachment(txtAttach.Text);

if (attach != null)

{

message.Attachments.Add(attach);

}

}

SmtpMail.SmtpServer = "smtp.gmail.com";

//The real server goes here

SmtpMail.Send(message);

MessageBox.Show("Your message has been sent.", "Mail Sent",

MessageBoxButtons.OK, MessageBoxIcon.None);

}

catch (Exception ex)

{

MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK,

MessageBoxIcon.Error);

}

}//btnSend

//I have to attach a file so,I created a button called btnAttach.

private void btnAttach_Click_1(object sender, EventArgs e)

{

DialogResult clicked = OpenattachDialog.ShowDialog();

if (clicked.Equals(DialogResult.OK)) {

txtAttach.Text = OpenattachDialog.FileName;

}

}//btnAttach