silverlight 中用 telerik RadDatePicker 自定义显示周期的DatePicker控件

最近做项目客户需要一个按某种周期显示日期的控件 这样方便客户按周期选择日期(有点像大姨妈周期表)。查了一下相关资料发现在ASP.net中RadDatePicker自带<CalendarDayTemplates>，<telerik:DayTemplate>和<SpecialDays>而silverlight中并没有相关的templete。所以没办法自己研究了一下 发现只能在style里面做。所以就在style中加了一个datetemplete

style:

  <DataTemplate x:Key="DataTemplate1">
            <Grid>
                <Telerik_Windows_Controls_Calendar:CalendarView Height="18" HeaderVisibility="Collapsed" HideColumn="True" HideRow="True" Width="22" HorizontalAlignment="Center" Background="{Binding Path=DataContext,ElementName=dayCell,Converter={StaticResource DayCellBackgroundConvert},Mode=TwoWay}"></Telerik_Windows_Controls_Calendar:CalendarView>
                <TextBlock x:Name="dayCell" FontSize="10" HorizontalAlignment="Center" DataContext="{Binding}" Text="{Binding }" VerticalAlignment="Center" Margin="1,0,0,0"/>
            </Grid>
        </DataTemplate>

 usercontrol:

   <Grid x:Name="LayoutRoot" Background="White">
        <telerik:RadDatePicker Height="Auto" Width="Auto" MinWidth="90" x:Name="datepicker" SelectionChanged="datepicker_SelectionChanged" HorizontalAlignment="Left" CalendarStyle="{StaticResource RadCalendarStyle1}">
        </telerik:RadDatePicker>
        <TextBox x:Name="txtHeaderstr" Visibility="Collapsed" TextChanged="Headerstr_TextChanged" Text="{Binding Path=Text,ElementName=ForegroundText,Mode=TwoWay}"></TextBox>
    </Grid>

 

其中CalendarView是控制背景色的而TextBlock则是其中显示的日期DayCellBackgroundConvert是根据日期在转换背景色用的。 但是由于每一个cell我们都需要调用这个convert 所以用singleton class来存贮一下数据库中的周期数据和控件需要的数据 以便于提高性能。

 public class Singleton
    {
        private static volatile Singleton _instance = null;
        private static object objLock = new Object();

        private Singleton()
        {

        }

        public static Singleton Instance
        {
            get
            {
                if (_instance == null)
                {
                    lock (objLock)
                    {
                        if (_instance == null)
                        {
                            _instance = new Singleton();
                        }
                    }
                }
                return _instance;
            }
        }

        public List<ClientSpecificAdhocCalenderBE> IClientSpecificAdhocCalender
        {
            get;
            set;
        }
        public MarketBE currentMarket
        {
            get;
            set;
        }

        public string  HeaderStr 
        { 
            get; set;
        }
    }

下面是convert：

public class DayCellBackgroundConvert : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //green
            Color Tcol = new Color();
            Tcol.A = 100;
            Tcol.B = 0;
            Tcol.G = 128;
            Tcol.R = 0;
            //yellow
            Color Fcol = new Color();
            Fcol.A = 100;
            Fcol.B = 0;
            Fcol.G = 255;
            Fcol.R = 255;

            if (value != null)
            {
                var currentcell = value as Telerik.Windows.Controls.Calendar.CalendarButtonContent;

                int v;
                bool ok = int.TryParse(currentcell.Text.ToString(), out v);
                if (ok)
                {
                    if (currentcell.ButtonType == Telerik.Windows.Controls.Calendar.CalendarButtonType.Date)
                    {
                        //var cellowner = currentcell.Owner as System.Windows.Controls.Control;
                        int i = 0;
                        var rowNumItems = Singleton.Instance.IClientSpecificAdhocCalender
                            .OrderBy(o => o.CycleStart).Select(p => new
                            {
                                RowIndex = ++i,
                                Item = p
                            });
                        var item = rowNumItems.Where(x => x.Item.CycleStart <= currentcell.Date && x.Item.CycleEnd >= currentcell.Date).FirstOrDefault();
                        if(item!=null)
                        {
                             int row =  item.RowIndex;
                            if (row % 2 == 0)
                            {
                                return new SolidColorBrush(Tcol);
                            }
                            else
                            {
                                return new SolidColorBrush(Fcol);
                            }
                        }
                    }
                }
            }
          return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            Color Tcol = new Color();
            Tcol.A = 100;
            Tcol.B = 0;
            Tcol.G = 128;
            Tcol.R = 0;
            return ((SolidColorBrush)value) == new SolidColorBrush(Tcol);
        }
    }

其中 bool ok = int.TryParse(currentcell.Text.ToString(), out v); 这句是用来判断cell中是数字还是字母的 当然这个完全是多余的 只是为了联系所以自己加上去的 完全可以用currentcell.ButtonType来判断。
最终结果是

也不知道说没说明白。第一次发虽然菜了点，还是希望不要被骂吧。 呵呵。