send c# form content to outlook email address

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C#

How would I configure this to actually send the form contents to an Outlook address?

This is what I have and it does not work.

protected void btn_submit_Click(object sender, EventArgs e)
{
	Response.Redirect("newAccount.aspx");
	Session["Cust_Name"] = txt_username.Text;
	 
	MailMessage mail = new MailMessage();
	//SmtpClient SmtpServer = new SmtpClient("smtp.outlook.com");
	//mail.From = (txt_email.Text);
	mail.To.Add("firstName.lastName@companyName.com");              
	mail.Body = (txt_name.Text + txt_company.Text + txt_address.Text + txt_city.Text + ddl_state.Items + txt_zipcode + txt_phone.Text + txt_email.Text + txt_username.Text + txt_pass.Text);
	SmtpClient client = new SmtpClient();
	client.Host = ("smtp.mail.companyName.com");

	client.Port = 1024;
	client.EnableSsl = true;

	client.Send(mail);
}

I am a newbie at c#.net coding, what I have is a "registration form" that when you click the submit button the data from the form will be emailed to the "Administrator" who will manually add the information to a database.

I know there is a better way of doing this, but this is how they want it done, since the Administrators email is an outlook account I would have to email the form contents to that.

I didn't know that it had nothing to do with outlook, I understood that you set up the System.mail.net
and entered information for the SMTP client, Do you have a good link to a tutorial that will show me how to achieve this?