How to Send Mail in C#.NET Window Application

private void button1_Click(object sender, EventArgs e)
{
    sendEMailThroughHotMail();
    // sendEMailThroughGmail();
}

public void sendEMailThroughHotMail()
{
    try
    {
        //Mail Message
        MailMessage mM = new MailMessage();
        mM.From = new MailAddress("[email protected]");
        //receiver email id
        mM.To.Add("[email protected]");
        mM.Subject = "Text H2H Mail";
        File.Copy("D:\\ClientMgmtDb1.accdb", "D:\\ClientMgmtDb21.accdb", true);
        mM.Attachments.Add(new Attachment(@
        "D:\\ClientMgmtDb21.accdb"));
        mM.Body = "Log_Fole";
        mM.IsBodyHtml = true;
        // SmtpClient sC = new SmtpClient("smtp.WorldClient.com");
        SmtpClient sC = new SmtpClient("192.168.100.10");
        // SmtpClient.UseDefaultCredentials = true;
        //mySmtpClient.Host = "192.168.100.10";
        sC.Port = 25;
        sC.Credentials = new NetworkCredential("[email protected]", "pintoo@123");
        sC.EnableSsl = false;
        sC.Send(mM);
        MessageBox.Show("Mail send Fuccessfully..Thanks");
        mM.Dispose();
        File.Delete("D:\\ClientMgmtDb21.accdb");
    }
    catch (Exception ex)
    {
        MessageBox.Show("error");
    }
}