using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace SQLInstances
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            DataTable dataTable = System.Data.Sql.SqlDataSourceEnumerator.Instance.GetDataSources();

            foreach (DataRow datarow in dataTable.Rows)
            {
                string datasource = datarow["ServerName"].ToString();
                if (datarow["InstanceName"] != DBNull.Value)
                {
                    datasource += String.Format("\\{0}", datarow["InstanceName"]);

                    ComboBox1.Items.Add(datasource);
                }

                DataGridView1.DataSource = dataTable;
            }
        }
    }
}