1. I would like the height of the chart to get bigger as we resize the panel
I have attached a small project that demonstrates that the chart is being resized accordingly in both directions. When I resize the window - both the width and height of the chart are changed correctly to fit the dock panel. May be you have set height somewhere in your code and this is why you get such results.
2. I would like the height of the chart to get bigger as we get more items.
The only way to achieve this is manually - when the chart is populated to calculate the new desired size of the chart. There is no way for the chart to know what is the appropriate height for your items.
the Telerik team
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