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Area Charts in ASP.NET AJAX
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Information to Area Chart

Area chart has the ability to display quantitive data graphically. From an area chart, you can see a category of data points being connected by straight line segments and the area below the line is filled.
When to use area chart? If you need to view and compare the trends of two or more data series that keep changing over a period of time within one chart, this chart type is a good choice, especially when the data series do not fluctuate too sharply. Sometimes, users may want to create stacked area chart in html page, with flex area sharp drawing. And Kettic asp.net chart control can resolve it.

generate area chart image in asp.net ajax using c#

How to Build a Simple Area Chart

Now in this section, we will show you how to make an area chart into your ASP.NET web application using our ASP.NET AJAX SDK. And you can view area chart demo on this page.
First, please drag and drop an AjaxPanel item from the toolbox to your aspx web page and then drag a chart control from the toolbox to that Ajaxpanel. Then you need to configure the settings from following two aspects.

Basic Settings

The basic settings for building an area chart using ASP.NET AJAX SDK mainly contain four parts, which are setting the chart type, customizing the chart title, setting the chart orientation and designing the chart skin. And all these settings can be done within the property window. Now we will offer you the detailed guidance for above settings.
  1. Chart Type: Set the Chart DefaultSeriesView property or ChartSeries.View to Area.
  2. Chart Title: Set the ChartCaption.Text property to "Area Chart". It will display at the top of the chart plot area. And you can rotate the title label in any degree.
  3. Chart Orientation: Set the SeriesOrientation property to Vertical. Note: you can also set the area chart orientation to horizontal based on your own needs.
  4. Chart Skin: Set the Skin Property to "KetticStyle". Much more chart skin options are supported here, such as size, color, position. The visualization will change by changing the template style.
And there is rich sample of how to change the basic area chart series setings in CSharp code.
KaxChart1.DefaultSeriesView = ChartSeriesView.Area;
KaxChart1.Skin = "KetticStyle";
KaxChart1.Caption.Text = "Area Chart";
KaxChart1.SeriesOrientation = ChartSeriesOrientation.Horizontal;

Area Settings

Now comes the part of area settings which are responsible for the displaying data series. For the area settings, there are two points that need to be noted here. One is that the number of data series in the area chart is various, ranging from 1 to N. The other is that each data category may have different items. Thus, you can use the property ChartSeries.Points to add item to each data group. To more, the first data series will dispaly at the front in area, so the other data area may be overlap some parts in the chart graph view.

<kettic:ChartSeries Name="Series 1" View=" Area">
<kettic:ChartSeriesPoint Value="1.5" Name="Point 1">
<kettic:ChartSeriesPoint Value="4" Name="Point 2">
<kettic:ChartSeriesPoint Value="1" Name="Point 3">
<kettic:ChartSeriesPoint Value="3.5" Name="Point 4">
<kettic:ChartSeriesPoint Value="1" Name="Point 5">
<kettic:ChartSeries Name="Series 2" View=" Area">
<kettic:ChartSeriesPoint Value="2" Name="Point 1">
<kettic:ChartSeriesPoint Value="1" Name="Point 2">
<kettic:ChartSeriesPoint Value="5" Name="Point 3">
<kettic:ChartSeriesPoint Value="1" Name="Point 4">
<kettic:ChartSeriesPoint Value="2.5" Name="Point 5">
Here is the example of setting area chart serise properties in asp web page.

KaxChart1.SeriesSet[0].AddPoint(1.5, "Point1");
KaxChart1.SeriesSet[0].AddPoint(4, "Point2");
KaxChart1.SeriesSet[0].AddPoint(1, "Point3");
KaxChart1.SeriesSet[0].AddPoint(3.5, "Point4");
KaxChart1.SeriesSet[0].AddPoint(1, "Point5");

KaxChart1.SeriesSet[1].AddPoint(2, "Point1");
KaxChart1.SeriesSet[1].AddPoint(1, "Point2");
KaxChart1.SeriesSet[1].AddPoint(5, "Point3");
KaxChart1.SeriesSet[1].AddPoint(1, "Point4");
KaxChart1.SeriesSet[1].AddPoint(2.5, "Point5");
Sometimes, when there are multiple data series in the area chart, to increase the chart’s visibility, we may display each data series with different colors. And this effect can be easily achieved by using the property ChartSeries.StyleSet.Fill.PrimaryColor.
More settings of Series to see Chart Series Element.
If you want to build an area chart using Visual C# .NET programming code, you can read build area chart using c#.