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I'm trying to create a .net charting control completely in the code behind and insert that chart at a specific location on the web page.
Here is my html page:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div id="chart"></div>
</form>
</body>
</html>
Here is the code behind:
using System;
using System.Drawing;
using System.Web.UI.DataVisualization.Charting;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//SET UP THE DATA TO PLOT
double[] yVal = { 80, 20 };
string[] xName = { "Pass", "Fail" };
//CREATE THE CHART
Chart Chart1 = new Chart();
//BIND THE DATA TO THE CHART
Chart1.Series.Add(new Series());
Chart1.Series[0].Points.DataBindXY(xName, yVal);
//SET THE CHART TYPE TO BE PIE
Chart1.Series[0].ChartType = System.Web.UI.DataVisualization.Charting.SeriesChartType.Pie;
Chart1.Series[0]["PieLabelStyle"] = "Outside";
Chart1.Series[0]["PieStartAngle"] = "-90";
//SET THE COLOR PALETTE FOR THE CHART TO BE A PRESET OF NONE
//DEFINE OUR OWN COLOR PALETTE FOR THE CHART
Chart1.Palette = System.Web.UI.DataVisualization.Charting.ChartColorPalette.None;
Chart1.PaletteCustomColors = new Color[] { Color.Blue, Color.Red };
//SET THE IMAGE OUTPUT TYPE TO BE JPEG
Chart1.ImageType = System.Web.UI.DataVisualization.Charting.ChartImageType.Jpeg;
//ADD A PLACE HOLDER CHART AREA TO THE CHART
//SET THE CHART AREA TO BE 3D
Chart1.ChartAreas.Add(new ChartArea());
Chart1.ChartAreas[0].Area3DStyle.Enable3D = true;
//ADD A PLACE HOLDER LEGEND TO THE CHART
//DISABLE THE LEGEND
Chart1.Legends.Add(new Legend());
Chart1.Legends[0].Enabled = false;
}
}
I want to render the charting control inside the div with id="chart"
Thanks for the help!
212
You can change the Chart Type by changing “type” property in view to “line”, “area”, “spline”, “bar”, “pie”, etc.
You can add multiple series to the chart by using Series property. The series are rendered in the order as it is added to the series array.
The DevExpress ASP.NET Chart Control offers a comprehensive collection of 2D and 3D charts to meet the data visualization needs of your end users. The ASP.NET Chart Control provides flexible data binding options that allow you to bind to a table from a database or a collection created in code.
</asp:ChartArea> </chartareas>
Assuming you installed the charting framework without any hitches:-
View:-
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div id="chart"></div>
<asp:Chart id="Chart1" runat="server"/>
</form>
</body>
</html>
Codebehind:-
using System;
using System.Drawing;
using System.Web.UI.DataVisualization.Charting;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//SET UP THE DATA TO PLOT
double[] yVal = { 80, 20 };
string[] xName = { "Pass", "Fail" };
//CREATE THE CHART
// Don't need to create the chart because it's a control!
//BIND THE DATA TO THE CHART
Chart1.Series.Add(new Series());
Chart1.Series[0].Points.DataBindXY(xName, yVal);
//SET THE CHART TYPE TO BE PIE
Chart1.Series[0].ChartType = System.Web.UI.DataVisualization.Charting.SeriesChartType.Pie;
Chart1.Series[0]["PieLabelStyle"] = "Outside";
Chart1.Series[0]["PieStartAngle"] = "-90";
//SET THE COLOR PALETTE FOR THE CHART TO BE A PRESET OF NONE
//DEFINE OUR OWN COLOR PALETTE FOR THE CHART
Chart1.Palette = System.Web.UI.DataVisualization.Charting.ChartColorPalette.None;
Chart1.PaletteCustomColors = new Color[] { Color.Blue, Color.Red };
//SET THE IMAGE OUTPUT TYPE TO BE JPEG
Chart1.ImageType = System.Web.UI.DataVisualization.Charting.ChartImageType.Jpeg;
//ADD A PLACE HOLDER CHART AREA TO THE CHART
//SET THE CHART AREA TO BE 3D
Chart1.ChartAreas.Add(new ChartArea());
Chart1.ChartAreas[0].Area3DStyle.Enable3D = true;
//ADD A PLACE HOLDER LEGEND TO THE CHART
//DISABLE THE LEGEND
Chart1.Legends.Add(new Legend());
Chart1.Legends[0].Enabled = false;
}
}
Check out http://weblogs.asp.net/scottgu/archive/2008/11/24/new-asp-net-charting-control-lt-asp-chart-runat-quot-server-quot-gt.aspx
81
Why the dynamic rendering approach? Why not just define the tag as:
And set the attributes on the control? Alternatively, you could try putting a and setting the text as the rendered response, which will wrap it with a span. You could try out other controls to do this with if you get an error with that, like LiteralControl.
41
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