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;
 
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        SqlConnection con = new SqlConnection();
 
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                con.ConnectionString = _
                  "server=.\\sqlexpress;database=Videothek;trusted_connection=" & _
                  "rue";
                con.Open();
                label2.Text = "connected";
            }
            catch (Exception ex) {
                MessageBox.Show(ex.Message);
            }
        }
    }
}