Question

I have a method that creates a series in a chart and plots 1 pair of x and y coordinates, although I am unable to add more than one pair of points / coordinates:

    private void button1_Click(object sender, EventArgs e)
    {

        // Set palette.
        this.chart2.Palette = ChartColorPalette.SeaGreen;

        // Set title.
        this.chart2.Titles.Add("Test Chart");

        // Add series and points
        chart2.Series.Add("RAM").Points.AddXY(22,23);

If I try adding something like:

chart2.Points.AddXY(22,23); 

I get the following message:

The type or namespace name ‘Points’ does not exist in the namespace
‘Chart2

Answer 1

The error tells you that Points is not a member of chart2. I think you need to try:

chart2.Series[“seriesname”].Points.AddXY(22,23).

Refer to this post for an example on how to add a series of points at once:

Adding a series of points to a chart

Edit: You need to know the seriesname which should be in your aspx page as something like this:

<asp:Chart ID="Chart1" runat="server"> 
  <Series> 
    <asp:Series Name="Series1">
    </asp:Series>
  </Series>
  <ChartAreas> 
    <asp:ChartArea Name="ChartArea1">
    </asp:ChartArea>
  </ChartAreas> 
</asp:Chart> 

series[0] may also work.