如何在ASP.NET/C#上给日历上色

我在使用ASP。. NET, c#编程，Visual Studio 2010。

我有一个日历，日期必须用员工输入的数据填写，数据将进入我的数据库。

每天有8个小时，我想:

If the day is empty, with 0 hours filled, colored red onIf the day is half-filled, with 1-7 hours filled, colored yellow onIf the day is full, with 8 hours filled, colored green on

我希望我解释的正确，这是我的代码:

    <asp:Calendar ID="Calendar1" runat="server" BackColor="#FFFFCC" 
                        BorderColor="#FFCC66" BorderWidth="1px" DayNameFormat="Shortest" 
                        Font-Names="Verdana" Font-Size="8pt" ForeColor="#663399" Height="200px" 
                        ShowGridLines="True" Width="1500px" 
                        OnSelectionChanged="Calendar1_SelectionChanged"
                        OnDayRender = "Calendar1_DayRender">
                    <DayHeaderStyle BackColor="#FFCC66" Font-Bold="True" Height="1px" />
                    <NextPrevStyle Font-Size="9pt" ForeColor="#FFFFCC" />
                    <OtherMonthDayStyle ForeColor="#CC9966" />
                    <SelectedDayStyle BackColor="#CCCCFF" Font-Bold="True" />
                    <SelectorStyle BackColor="#FFCC66" />
                    <TitleStyle BackColor="#990000" Font-Bold="True" Font-Size="9pt" ForeColor="#FFFFCC" />
                </asp:Calendar>

和c#:

    protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
    {
        Style ImputedDaysStyle = new Style();
        ImputedDaysStyle.BackColor = System.Drawing.Color.Green;
        ImputedDaysStyle.BorderColor = System.Drawing.Color.Purple;
        ImputedDaysStyle.BorderWidth = 1;
        Style HalfImputedDaysStyle = new Style();
        ImputedDaysStyle.BackColor = System.Drawing.Color.GreenYellow;
        ImputedDaysStyle.BorderColor = System.Drawing.Color.Purple;
        ImputedDaysStyle.BorderWidth = 1;
        if (e.Day.Date.Month.ToString() != SelectedMonth) return;
        if (HoursXDayInMonth[e.Day.Date.Day-1] >= 8) e.Cell.ApplyStyle(ImputedDaysStyle);
        else if (HoursXDayInMonth[e.Day.Date.Day - 1] >= 1) e.Cell.ApplyStyle(HalfImputedDaysStyle);
    }

如果有人知道怎么做，请告诉我!

谢谢!