Read SQl Server Name

using Microsoft.SqlServer.Management.Smo;

protected void Button1_Click(object sender, EventArgs e)
    {
        DataTable dt = SmoApplication.EnumAvailableSqlServers(false);
        if (dt.Rows.Count > 0)
        {
            foreach (DataRow dr in dt.Rows)
            {
                Response.Write(dr["Name"].ToString() + "
");
            }
        }
    }

Note: You have to add a Reference of Microsoft.SqlServer.Smo dll.