title: Chart control X axis growing and growing and it looks like it not moving
body: <p>I have application with real time Chart control that received date and display this on my control:</p>
  
  <p>This is my control:</p>
  
  <pre><code>MyObject obj...
  
  Series series = new Series();
  series.Color = Color.Blue;
  series.ChartType = SeriesChartType.Spline;
  series.BorderWidth = 2;
  chart1.Series.Add(series);
  chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.White;
  chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.White;
  chart1.ChartAreas[0].AxisX.IsStartedFromZero = true;
  chart1.ChartAreas[0].AxisX.IntervalOffsetType = DateTimeIntervalType.Number
  ;
  </code></pre>
  
  <p>Timer tick:</p>
  
  <pre><code>private void chartTimer_Tick(object sender, EventArgs e)
  {
          series.Points.Add(wf.BitsPerSecond * 0.000001);
          chart1.ResetAutoValues();
  }
  </code></pre>
  
  <p>my problem is that at the beginning this is the graph:</p>
  
  <p><img src="https://i.stack.imgur.com/Ej5Ik.jpg" alt="enter image description here"></p>
  
  <p>After few minutes the X axis is growing and growing and it looks like the graph stop to moving:</p>
  
  <p><img src="https://i.stack.imgur.com/pU0EB.jpg" alt="enter image description here"></p>
  
  <p>how can i make sure my graph will be look at the beginning ?</p>