How to send gmail to multiple person in asp.net

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C#

ASP.NET

Hello,,,
My Question is How to send gmail to multiple person in asp.net.I have send email one to one person through asp.net code.But now i want to send email one to many person.
Like...

from=me@gmail.com
to=you1@gmail.com,you2@gmail.com

Code of send email one to one person

using System.Net.Mail;

protected void btnSend_Click(object sender, EventArgs e)
{

string from = "megmail@gmail.com";
string to = "you@gmail.com";

System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
mail.To.Add(to);
mail.From = new MailAddress(from, "One Ghost", System.Text.Encoding.UTF8);
mail.Subject = txtsubject.Text;
mail.SubjectEncoding = System.Text.Encoding.UTF8;
mail.Body = txtMsg.Text;
mail.BodyEncoding = System.Text.Encoding.UTF8;
mail.IsBodyHtml = true;
mail.Priority = MailPriority.High;

SmtpClient client = new SmtpClient();

client.Credentials = new System.Net.NetworkCredential(from, Password);

client.Port = 587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
try
{

client.Send(mail);
}
catch (Exception ex)
{
Exception ex2 = ex;
string errorMessage = string.Empty;
while (ex2 != null)
{
errorMessage += ex2.ToString();
ex2 = ex2.InnerException;
}
HttpContext.Current.Response.Write(errorMessage);
//txtMsg.Text = ex.Message;
//mail.Subject = ex.Message;
//mail.Body = txtMsg.Text;
}
}