Connecting to a SQL database on my website.

Question

Hello,
I'm trying to create a login form that connects to a SQL database that's placed on my website. My problem is that I don't know how to connect to the database. Let's take these for an example:
Server the database is on: 10.246.16.159:3306
Database name: rhythmcheaters_
Database section: phpbb_users
Database password : 1A2b3C4d

Answer 1

Following Example will May  help You..
Try to design userinterface as like this..
Double on Login button a new method will be generated write the following code under that method..
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Configuration;
using System.Security.Cryptography;
namespace windowsloginapp
    public partial class login : Form
        public string userName, Password;
        public int usercount;
        public login()
            InitializeComponent();
        private void button1_Click(object sender, EventArgs e)
            userName = textBox1.Text;
            Password = textBox2.Text;
            if (userName == "" && Password == "")
                MessageBox.Show("Please Enter User Name and Password");
            else
                string scn = ConfigurationManager.ConnectionStrings["Myconn"].ConnectionString.ToString();
                SqlConnection cn = new SqlConnection(scn);
                 cn.Open();
                 SqlCommand cmd = new SqlCommand("SP_logapp", cn);
                    cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.AddWithValue("@Username", userName);
                    cmd.Parameters.AddWithValue("@Password", Password);
                    int usercount =(Int32) cmd.ExecuteScalar();
                        if (usercount == 1)
                            this.Hide();
                            Welcome w1 = new Welcome(userName);
                            w1.Show();
                        else
                            //login lg = new login();
                            //lg.Show();
                            MessageBox.Show("Not a Valid UserName and Password");
                        cn.Close();
APP.Config 
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    <add name="Myconn" connectionString="Data Source=10.246.16.159:3306;Initial
Catalog=rhythmcheaters_; user ID=phpbb_users;Password=1A2b3C4d;Integrated
security=sspi" providerName="system.data.sqlclient" />
  </connectionStrings>
</configuration>
Create database with the same name of(rhythmcheaters_) and declare 2 variables as username and password....
Insert some into that table...Do the same web application also..........It
will work...
Thanks & Regards RAJENDRAN M