MSDN charts changing point values realtime?

Question

I want to use MSDN charts to represent realtime data i\'m getting from a telnet application. For testing purpose i have added a button to alter the chart manually. I manuall

Answer 1

Call chart1.Refresh() after changing the value; it will force a redraw of the chart, picking up the new values.

Answer 2

DataTable dtChartDataSource = Input from your side.

foreach (DataColumn dc in dtChartDataSource.Columns)
{
   //a series to the chart
 if (chart.Series.FindByName(dc.ColumnName) == null)
 {
      series = dc.ColumnName;
      chart.Series.Add(series);
      chart.Series[series].ChartType = SeriesChartType.Column;

    foreach (DataRow dr in dtChartDataSource.Rows)
    {
        double dataPoint = 0;
        double.TryParse(dr[dc.ColumnName].ToString(), out dataPoint);

        Yourchart.Series[seriesName].Points.AddXY("customStringsOnAxis", dataPoints);
    }
 }
}

It will add the x axis data and Y axis values to the Column chart.

Hope its helps

Answer 3

I've just found out that SetValueY() does not update the maximum interval in the Y axis. Therefore, if your current maximum is 0, it will not show anything higher than 0.

Answer 4

I do this:

    public static void Refresh(this Chart chart) // update changed data
    {
        chart.Series[0].Points.AddXY(1, 1);
        chart.Update();
        chart.Series[0].Points.RemoveAt(chart.Series[0].Points.Count-1);
    }

chart1.Refresh();