problem with SendingMail

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protected void Button1_Click(object sender, EventArgs e)
    {
        SmtpClient client = new SmtpClient();
        MailMessage message = new MailMessage();
        client.Port = 587;
        client.Host = "smtp.gmail.com";
        client.UseDefaultCredentials = true;
        client.Credentials = new System.Net.NetworkCredential("[email protected]", "mygmailpassword");
        client.EnableSsl = true;
        try
        {
            MailAddress SendTo = new MailAddress("[email protected]");

            MailAddress SendFrom = new MailAddress("[email protected]");
            message = new MailMessage(SendFrom, SendTo);
            message.Body = "this is content Of Mail";
            message.Subject = "Test Subject";
            message.SubjectEncoding = Encoding.UTF8;
          
            //Add Mail Header 

            message.Headers.Add("You Name", "Your Company Name");
           
            client.Send(message);

            Page.RegisterClientScriptBlock("Thanks!", "");
        }
        catch
        {

        }
    }

 protected void btnSend_Click(object sender, EventArgs e)
{
SmtpClient client = new SmtpClient();
MailMessage message = new MailMessage();
client.Port = 587;
client.Host = "smtp.gmail.com";
client.UseDefaultCredentials = true;
client.Credentials = new System.Net.NetworkCredential(txtemail.Text ,txtpass.Text );
client.EnableSsl = true;
try
{
MailAddress SendTo = new MailAddress(txtTo.Text);
MailAddress SendFrom = new MailAddress(txtFrom.Text);
message = new MailMessage(SendFrom, SendTo);
message.Body = txtMessage.Text;
message.Subject = txtSub.Text;
client.Send(message);
txtStatus.Text = "Your email has been sent";
Page.RegisterClientScriptBlock("Thanks!", "");
}
catch (Exception ex)
{
txtStatus.Text = ex.ToString();
}
}
}

1. try  
2. {  
3.     //Creating new mail message  
4.     System.Web.Mail.MailMessage MyMail = new System.Web.Mail.MailMessage();  
5.   
6.     //Display Name can be sent using following format  
7.     //\<>\ "  
8.     MyMail.From = @"\Webtips Emailer\ ";  
9.   
10.     //To Address  
11.     MyMail.To = "[email protected]";  
12.   
13.     // BCC Address  
14.     MyMail.Bcc = "[email protected]";  
15.   
16.     //Mail Subject  
17.     MyMail.Subject = "Subject Of the mail";  
18.   
19.     //Body of the mail  
20.     MyMail.Body = "test mail message";  
21.     MyMail.BodyFormat = System.Web.Mail.MailFormat.Html;  
22.       
23.     //SMTP Server name or IP from which mail to be sent  
24.     System.Web.Mail.SmtpMail.SmtpServer = "smtp.someserver.com";  
25.   
26.     //Sending Mail  
27.     System.Web.Mail.SmtpMail.Send(MyMail);  
28. }  
29. catch  
30. {  
31. }