How to change the viewing angle and label value of a .NET C # chart

Question

Short description

I use charts for a specific application, where I need to change the viewing angle of the displayed three-dimensional pie chart and the value of automatic marks from the names of the pie marks to the corresponding pie values.

What the chart looks like:

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Initialization

This is how I initialize it:

Dictionary<string, decimal> secondPersonsWithValues = HistoryModel.getSecondPersonWithValues(); decimal[] yValues = new decimal[secondPersonsWithValues.Values.Count]; //VALUES string[] xValues = new string[secondPersonsWithValues.Keys.Count]; //LABELS secondPersonsWithValues.Keys.CopyTo(xValues, 0); secondPersonsWithValues.Values.CopyTo(yValues, 0); incomeExpenseChart.Series["Default"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Pie; incomeExpenseChart.Series["Default"].Points.DataBindXY(xValues, yValues); incomeExpenseChart.ChartAreas["Default"].Area3DStyle.Enable3D = true; incomeExpenseChart.Series["Default"].CustomProperties = "PieLabelStyle=Outside"; incomeExpenseChart.Legends["Default"].Enabled = true; incomeExpenseChart.ChartAreas["Default"].Area3DStyle.LightStyle = System.Windows.Forms.DataVisualization.Charting.LightStyle.Realistic; incomeExpenseChart.Series["Default"]["PieDrawingStyle"] = "SoftEdge"; 

Basically, I request data from a database using HistoryModel.getSecondPersonWithValues(); to get pairs like Dictionary<string, decimal> , where the key is the person and the value is the quantity.

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Problem number 1

I need to be able to change the labeled labels from the names of people for the number or add another label with the same colors (see image).

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Problem number 2

Another problem is that I need to change the viewing angle of the 3D chart. Maybe it's very simple, and I just don’t know the property I need, or maybe I need to override some kind of drawing event. In any case, any methods could be used.

Thanks in advance, George.

Answer 1

The solution to problem number 1

It helped to add a new shortcut and padding with custom values. Also, I changed Series.IsValueShownAsLabel = true;

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The solution to problem number 2

I had to set ChartArea.Area3DStyle.IsClustered = true; and then set ChartArea.Area3DStyle.Inclination;

Answer 2

Use xlhart.Rotation and xlchart.Elevation .