Question

So I have connected a grid to a database where my database contains values of only 1, 2, and 3. I want to have it so that every box that has a 1 is green, 2 is yellow, and 3 is red.

My questions is where should i put the conditioning code and what language should i do it in?

The following information is just my gridview and the data i am linking it to.

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
    DataSourceID="SqlDataSource1"
    >
    <Columns>
        <asp:BoundField DataField="Line" HeaderText="Line"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" ItemStyle-BackColor="#FF6699" />
        <asp:BoundField DataField="Jan" HeaderText="Jan"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Feb" HeaderText="Feb"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Mar" HeaderText="Mar"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Apr" HeaderText="Apr"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="May" HeaderText="May"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Jun" HeaderText="Jun"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Jul" HeaderText="Jul"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Aug" HeaderText="Aug"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Sep" HeaderText="Sep"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Oct" HeaderText="Oct"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Nov" HeaderText="Nov"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />
        <asp:BoundField DataField="Dec" HeaderText="Dec"  ItemStyle-Width="75" ItemStyle-HorizontalAlign="Right" />

    </Columns>
</asp:GridView>



<asp:SqlDataSource ID="SqlDataSource1" runat="server" 
    ConnectionString="<%$ ConnectionStrings:dashboardConnectionString %>" 
SelectCommand="SELECT 
        line AS Line, 
        [2012-01-31] AS 'Jan', 
        [2012-02-29] AS 'Feb', 
        [2012-03-31] AS 'Mar', 
        [2012-04-30] AS 'Apr', 
        [2012-05-31] AS 'May', 
        [2012-06-30] AS 'Jun', 
        [2012-07-31] AS 'Jul', 
        [2012-08-31] AS 'Aug', 
        [2012-09-30] AS 'Sep', 
        [2012-10-31] AS 'Oct', 
        [2012-11-30] AS 'Nov', 
        [2012-12-31] AS 'Dec'
    FROM
    (Select line, report_month, state FROM [Monthly_State]) AS sourcetable
    PIVOT
    (
    MAX(state) 
    FOR report_month IN ([2012-01-31], [2012-02-29], [2012-03-31], [2012-04-30], [2012-05-31], [2012-06-30], [2012-07-31], [2012-08-31], [2012-09-30], [2012-10-31], [2012-11-30], [2012-12-31])
    ) as pivottable; ">

    </asp:SqlDataSource>

Answer 1

I would do it by using template field and declare a public method in code behind as follows

<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="cddasf" runat="server" CssClass='<%# GetClass(Eval("colum name")) %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>

In the code behind

public  string GetClass(object g)
{

// process the value and return the css class name you want

}