Question

Let’s suppose I have a Winforms app with a Dictionary that looks like this:

private Dictionary<string, double> ChartCollection = new Dictionary<string, double>();

And let’s suppose that I populate this dictionary with the number of each type of various foe which I’ve recently slain:

Ninja, 7
Pirate, 10
Space Cowboy, 4
Zombie, 8
Vampire, 7

Finally, let’s suppose I bind a chart to this data like so:

chtAgentVersions.Series[0].Points.DataBindXY(ChartCollection.Keys, ChartCollection.Values);

This works flawlessly. I get my graph and a legend made up of my foe names and everything just fine. But when I try to apply this code:

chtAgentVersions.Series[0].Label = "#VALX (#PERCENT)";

…the labels on my legend change from their appropriate foe names to zeroes. Upon inspection of the Series after the databinding, I find that the names of my foes are actually not getting written to the XValues. I even tried this:

chtAgentVersions.Series[0].XValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.String;

But, to no avail. Why are they all zeroes?

Answer 1

If you’re using strings as your XValue, use #AXISLABEL instead of #VALX since the XValue is always zero when used with strings.