How can I select certain data in a database to place in gridview?

Ok I'm new to coding and am trying to figure out how I can code in Visual Studio C#. I have a database table that has 3 columns and 10 rows. The column headings are Status, ID, and EmployeeName. In the Status colum, each row has a single digit from #1 to #4. What I want to do is utilize a timer to check this table every 60 seconds and return any row and column where the status ID is greater than 1. Here is what I have so far:

 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
using System.Data;
using System.Data.SqlClient;
using System.Timers;
using System.ComponentModel;

 

 

 

 
public partial class Poll : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
  }
  public Poll()
  {
  InitializeComponent();
  timer.Interval = 60000;
  timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
  }
  private void InitializeComponent()
  {
  }

 
  System.Timers.Timer timer = new System.Timers.Timer();
  DataTable dt = new DataTable();
  void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
  {
  using (OleDbConnection con = new OleDbConnection("MAS2000"))
  {
  OleDbDataAdapter adapter = new OleDbDataAdapter("Insert * from SensorEvent", con);
  adapter.Fill(dt);

 
  DataRow[] rows = dt.Select("StatusID > '1'");
  DataTable temp = new DataTable();
  temp.Columns.Add("StatusId", typeof(int));
  temp.Columns.Add("SensorID", typeof(String));
  temp.Columns.Add("UserID", typeof(String));

 
  //add columns to temp

 
  foreach (DataRow r in rows)
  {
  //add rows to temp as follows
  temp.Rows.Add(int.Parse(r[0].ToString()), r[1].ToString(), r[2].ToString());

 
  }

 
  this.dataGrid.DataSource = temp;

 
It brings up the tables but the function of how to only import the desired results(status id that is higher than 1) does not work. I get the whole table. So any help with this would be very much appreciated. Thanks