Applies to: Nevron Chart for .NET
How to control the colors that are used for each Pie Chart segment?
Usually there are standard colors recognized for each category (company, country etc.) that are displayed with the Pie Chat slices. You can easily specify the Pie Chart colors in Nevron Chart. Except solid color, for the chart fill style, you can also have Gradient, Image, Hatch or Advanced Gradient fill styles. You can also use Image Filters for the 2D charts.
Take a look at the following Help Documentation topics: http://helpdotnetvision.nevron.com/
Framework > Presentation Layer > Graphics > Appearance Styles > Fill Styles
The following code snippet shows how to create a simple pie chart that has three slices with different color, value and label:
[C#]
using System;
using System.Drawing;
using System.Windows.Forms;
using Nevron.Chart;
using Nevron.Chart.WinForm;
using Nevron.GraphicsCore;
...
nChartControl1.Controller.Tools.Add(new NSelectorTool());
nChartControl1.Controller.Tools.Add(new NTrackballTool());
nChartControl1.Settings.JitterMode = JitterMode.Auto;
nChartControl1.Settings.JitteringSteps = 8;
nChartControl1.Panels.Clear();
NPieChart chart = new NPieChart();
nChartControl1.Panels.Add(chart);
chart.Enable3D = true;
chart.Width = 70;
chart.Depth = 10;
chart.Height = 100;
chart.Projection.SetPredefinedProjection(PredefinedProjection.PerspectiveElevated);
chart.LightModel.SetPredefinedLightModel(PredefinedLightModel.ShinyCameraLight);
NPieSeries pie = new NPieSeries();
chart.Series.Add(pie);
pie.PieStyle = PieStyle.SmoothEdgePie;
pie.PieEdgePercent = 5;
pie.Values.Add(30);
pie.FillStyles[0] = new NColorFillStyle(Color.FromArgb(255, 0, 0)); // red defined as rgb
pie.Labels.Add("Company X");
pie.Values.Add(30);
pie.FillStyles[1] = new NColorFillStyle(Color.Green);
pie.Labels.Add("Company Y");
pie.Values.Add(40);
pie.FillStyles[2] = new NColorFillStyle(Color.Blue);
pie.Labels.Add("Company Z");
pie.Values.Add(27);
pie.FillStyles[3] = new NColorFillStyle(Color.Yellow);
pie.Labels.Add("Company XYZ");
pie.DataLabelStyle.Format = "<label>\n<percent>";
pie.LabelMode = PieLabelMode.Rim;
[VB.NET]
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports Nevron.Chart
Imports Nevron.Chart.WinForm
Imports Nevron.GraphicsCore
...
NChartControl1.Controller.Tools.Add(New NSelectorTool())
NChartControl1.Controller.Tools.Add(New NTrackballTool())
NChartControl1.Settings.JitterMode = JitterMode.Auto
NChartControl1.Settings.JitteringSteps = 8
NChartControl1.Panels.Clear()
Dim chart As New NPieChart()
NChartControl1.Panels.Add(chart)
chart.Enable3D = True
chart.Width = 70
chart.Depth = 10
chart.Height = 100
chart.Projection.SetPredefinedProjection(PredefinedProjection.PerspectiveElevated)
chart.LightModel.SetPredefinedLightModel(PredefinedLightModel.ShinyCameraLight)
Dim pie As New NPieSeries()
chart.Series.Add(pie)
pie.PieStyle = PieStyle.SmoothEdgePie
pie.PieEdgePercent = 5
pie.Values.Add(30)
pie.FillStyles(0) = New NColorFillStyle(Color.FromArgb(255, 0, 0))
' red defined as rgb
pie.Labels.Add("Company X")
pie.Values.Add(30)
pie.FillStyles(1) = New NColorFillStyle(Color.Green)
pie.Labels.Add("Company Y")
pie.Values.Add(40)
pie.FillStyles(2) = New NColorFillStyle(Color.Blue)
pie.Labels.Add("Company Z")
pie.Values.Add(27)
pie.FillStyles(3) = New NColorFillStyle(Color.Yellow)
pie.Labels.Add("Company XYZ")
pie.DataLabelStyle.Format = "<label>" & vbLf & "<percent>"
pie.LabelMode = PieLabelMode.Rim
Article ID: 220, Created On: 5/16/2012, Modified: 1/28/2013