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Imports InfoSoftGlobal
Partial Class ArrayExample_MultiSeries
    Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' Generate chart in Literal Control
        FCLiteral.Text = CreateChart()
    End Sub

Public Function CreateChart() As String

'In this example, we plot a multi series chart from data contained
        'in an array. The array will have three columns - first one for data label (product)
        'and the next two for data values. The first data value column would store sales information
        'for current year and the second one for previous year.

'Let's store the sales data for 6 products in our array. We also store
        'the name of products. 
        Dim arrData(6, 3) As String
        'Store Name of Products
        arrData(0, 1) = "Product A"
        arrData(1, 1) = "Product B"
        arrData(2, 1) = "Product C"
        arrData(3, 1) = "Product D"
        arrData(4, 1) = "Product E"
        arrData(5, 1) = "Product F"
        'Store sales data for current year
        arrData(0, 2) = "567500"
        arrData(1, 2) = "815300"
        arrData(2, 2) = "556800"
        arrData(3, 2) = "734500"
        arrData(4, 2) = "676800"
        arrData(5, 2) = "648500"
        'Store sales data for previous year
        arrData(0, 3) = "547300"
        arrData(1, 3) = "584500"
        arrData(2, 3) = "754000"
        arrData(3, 3) = "456300"
        arrData(4, 3) = "754500"
        arrData(5, 3) = "437600"

'Now, we need to convert this data into multi-series XML. 
        'We convert using string concatenation.
        'strXML - Stores the entire XML
        'strCategories - Stores XML for the <categories> and child <category> elements
        'strDataCurr - Stores XML for current year's sales
        'strDataPrev - Stores XML for previous year's sales
        Dim strXML As String, strCategories As String, strDataCurr As String, strDataPrev As String, i As Integer

'Initialize <graph> element
        strXML = "<graph caption='Sales by Product' numberPrefix='$' decimalPrecision='0' >"

'Initialize <categories> element - necessary to generate a multi-series chart
        strCategories = "<categories>"

'Initiate <dataset> elements
        strDataCurr = "<dataset seriesName='Current Year' color='AFD8F8'>"
        strDataPrev = "<dataset seriesName='Previous Year' color='F6BD0F'>"

'Iterate through the data	
        For i = 0 To UBound(arrData) - 1
            'Append <category name='...' /> to strCategories
            strCategories = strCategories & "<category name='" & arrData(i, 1) & "' />"
            'Add <set value='...' /> to both the datasets
            strDataCurr = strDataCurr & "<set value='" & arrData(i, 2) & "' />"
            strDataPrev = strDataPrev & "<set value='" & arrData(i, 3) & "' />"
        Next

'Close <categories> element
        strCategories = strCategories & "</categories>"

'Close <dataset> elements
        strDataCurr = strDataCurr & "</dataset>"
        strDataPrev = strDataPrev & "</dataset>"

'Assemble the entire XML now
        strXML = strXML & strCategories & strDataCurr & strDataPrev & "</graph>"

'Create the chart - MS Column 3D Chart with data contained in strXML
        Return FusionCharts.RenderChart("../FusionCharts/FCF_MSColumn3D.swf", "", strXML, "productSales", "600", "300", False, False)

End Function

End Class