WebChart Control Sample

Sample of Binding a Pie to a DataSet

This sample shows:

How you can Bind a DataSet to any type of chart. In this case the DataSet is created locally, but it works exactly as it came from SQL Server or any other source. The only trick on making it work is that you need to assign it to a DataView since the chart only supports IEnumerable types and DataSet is not, so select the table you need and get a DataView for it. Then just set the DataXValueField and DataYValueField.

This is how the chart looks like:
Sample

C# Code

<%@ page language="C#"%>
<%@ import namespace="System.Data"%>
<%@ register tagprefix="web" namespace="WebChart" assembly="WebChart"%>
<script runat="server">
void Page_Load(object o, EventArgs e) {
    CreateChart();
}

void CreateChart() {
    PieChart chart = new PieChart();
    chart.DataSource = GetDataSet().Tables[0].DefaultView;
    chart.DataXValueField = "Title";
    chart.DataYValueField = "Price";
    chart.DataLabels.Visible = true;
    chart.DataLabels.ForeColor = System.Drawing.Color.Blue;
    chart.Shadow.Visible = true;
    chart.DataBind();
    chart.Explosion = 10;
    ChartControl1.Charts.Add(chart);
    ChartControl1.RedrawChart();
}

DataSet GetDataSet() {
    DataSet ds = new DataSet();
    DataTable table = ds.Tables.Add("My Table");
    table.Columns.Add(new DataColumn("Title"));
    table.Columns.Add(new DataColumn("Price", typeof(int)));

    Random rnd = new Random();
    for (int i = 0; i < 10; i++) {
        DataRow row = table.NewRow();
        row["Title"] = "Title:" + i.ToString();
        row["Price"] = rnd.Next(1, 100);
        table.Rows.Add(row);
    }
    return ds;
}
</script>
<html>
    <head>
        <title>
            Sample Pie</title>
    </head>
    <body>
        <form id="form1" runat="server">
            <web:chartcontrol runat="server" id="ChartControl1"
                    height="400" width="350" gridlines="none" legend-position="Bottom" />
        </form>
    </body>
</html>

VB.NET Code

<%@ page language="VB"%>
<%@ import namespace="System.Data"%>
<%@ register tagprefix="web" namespace="WebChart" assembly="WebChart"%>
<script runat='server'>

    Sub Page_Load(ByVal o As Object, ByVal e As EventArgs)
        CreateChart
    End Sub

    Sub CreateChart()
        Dim chart As PieChart = New PieChart
        chart.DataSource = GetDataSet.Tables(0).DefaultView
        chart.DataXValueField = "Title"
        chart.DataYValueField = "Price"
        chart.DataLabels.Visible = true
        chart.DataLabels.ForeColor = System.Drawing.Color.Blue
        chart.Shadow.Visible = true
        chart.DataBind
        chart.Explosion = 10
        ChartControl1.Charts.Add(chart)
        ChartControl1.RedrawChart
    End Sub

    Function GetDataSet() As DataSet
        Dim ds As DataSet = New DataSet
        Dim table As DataTable = ds.Tables.Add("My Table")
        table.Columns.Add(New DataColumn("Title"))
        table.Columns.Add(New DataColumn("Price", GetType(System.Int32)))
        Dim rnd As Random = New Random
        Dim i As Integer = 0
        Do While (i < 10)
            Dim row As DataRow = table.NewRow
            row("Title") = ("Title:" + i.ToString)
            row("Price") = rnd.Next(1, 100)
            table.Rows.Add(row)
            i = (i + 1)
        Loop
        Return ds
    End Function
</script>
<html>
    <head>
        <title>
            Sample Pie</title>
    </head>
    <body>
        <form id="form1" runat="server">
            <web:chartcontrol runat="server" id="ChartControl1"
                    height="400" width="350" gridlines="none" legend-position="Bottom" />
        </form>
    </body>
</html>

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