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Chart Control in AJAX

Posted by Davin Martyn Articles | AJAX December 22, 2011
Charts enable you to represent data in chart format. You may have used different types of charts in MS Excel. The AJAX Toolkit supports the creation of pie charts, line charts, bar charts, and so forth.
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Introduction

Ajax (Asynchronous JavaScript and XML) is a new web development technique used for interactive websites. AJAX helps us develop web applications and retrieve a small amount of data from a web server. AJAX consists of different types of technology.

  • JavaScript
  • XML
  • Asynchronous Call to the server

Chart Control

The Chart control include pie, area, range, point, circular, accumulation, data distribution, Ajax interactive, doughnut. We can statically declare chart data within the control declaration, or alternatively use data-binding to populate it dynamically. At runtime the server control generates an image (for example a .PNG file) that is referenced from the client HTML of the page using a <img/> element output by the <asp:chart/> control.  The server control supports the ability to cache the chart image, as well as save it on disk for persistent scenarios.  It does not require any other server software to be installed, and will work with any standard ASP.NET page.

Web Control for creating Chart

  • Line Charts
  • Smooth Line Charts
  • Column Charts
  • Area Charts
  • Scattered Charts
  • Stacked Column Charts
  • Pie Charts
  • Stacked Area Charts

Step 1 : Open Visual Studio 2010.

  • Go to File->New->WebSite
  • Select ASP.NET Empty WebSite

Step 2 : Go to Solution Explorer and right-click.

  • Select Add->New Item
  • Select WebForm
  • Default.aspx page open
step2.gif

Step 3 :  Go to Default.aspx page and click on the [Design] option and drag control from Toolbox.

  • Drag Chart control, ScriptManager control, UpdatePanel control

Chart Control

step3.gif

Create Table for Chart Control

Step 4 :
Go to Solution Explorer and right-click.

  • Select Add->New Item
  • Select SqlDataSource

Step 5 : Go to Server Explorer and right-click.

  • Select Table option and right-click
  • Select Add New Table and define Field
step 5.gif

Define Value in the Table

Step 6 : Go to Table option and right-click.

  • Select Show Data Table
  • Define all Data Field
step6.gif

Bind the Data:

Step 7 :
Now go to the Default.aspx page and click on the Chart control.

  • Select New Data Source option
  • Define Data Source
  • Add SQLDataSource
step7.gif

Define Connection String :

Step 8 : Select SQLDataSource option and click in ConnectionString.

  • Select DataBase.mdf file

step8.gif

Define Series and Area 

Step 9 : Now right-click on the Chart control.

  • Select Series property and click in button

  • Define DataSource
  • Define XValueMember, YValueMember
step 9.gif

Chart Area

Step 10 :
Now click on the chart control.

  • Select Chart Area Option
  • Visible True
  • Select Style:3D
step10.gif

Step 11 : Now go to Default.aspx [Source] option and write the below code.

Code :

<head runat="server">
    <title> my ajax chart</title
>
</head>
<
body>
    <form id="form1" runat="server" style="background-color: #0099FF">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <div style="background-color: #99FF99">
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
      <ContentTemplate>
    <br />
      <h1> MY AJAX CHART</h1>
       <
asp:Chart ID="Chart1" runat="server" BackColor="SandyBrown"
        BorderlineColor="Red" DataSourceID="SqlDataSource2" onload="Chart1_Load"
        Palette="Fire" BackGradientStyle="LeftRight" BackSecondaryColor="Maroon"
            Height="500px" Width="500px">
        <series>
            <asp:Series Legend="Legend1" Name="Series1"
                XValueType="Double" BorderColor="255, 224, 192" >
            </asp:Series>
            <asp:Series ChartArea="ChartArea1" Legend="Legend1" Name="Series4">
            </asp:Series>
        </series>
        <MapAreas>
            <asp:MapArea Coordinates="0,0,0,0" />
        </MapAreas>
        <chartareas>|
            <asp:ChartArea BackColor="255, 224, 192" Name="ChartArea1" BorderWidth="5">
                <AxisY Title="customer">
                </AxisY>
                <AxisX LineColor="BlanchedAlmond" Title="country">
                </AxisX>
            </asp:ChartArea>
             <asp:ChartArea Name="ChartArea2">
            </asp:ChartArea>
        </chartareas>
        <Legends>
            <asp:Legend BorderColor="128, 255, 128" Name="Legend1">
            </asp:Legend>
        </Legends>
    </asp:Chart>
          <asp:SqlDataSource ID="SqlDataSource2" runat="server"></asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server"
        ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
        SelectCommand="SELECT * FROM [my customer]"></asp:SqlDataSource>
        <br />
        </ContentTemplate>
        </asp:UpdatePanel>
        </div>
    </form
>
</body>
</
html>

Step 12 : Now run the application by Pressing F5.

step12.gif

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