c# asp.net 日历控件（9）

<div>
        
                <asp:Calendar ID= "Calendar1" runat= "server" BackColor= "#FFFFCC" 
                        BorderColor= "#FFCC66" BorderWidth= "1px" DayNameFormat= "Shortest" 
                        Font-Names= "Verdana" Font-Size= "8pt" ForeColor= "#663399" Height= "200px" 
                        onselectionchanged= "Calendar1_SelectionChanged" SelectionMode= "DayWeek" 
                        ShowGridLines= "True" Width= "220px">
                        <SelectedDayStyle BackColor= "#CCCCFF" Font-Bold= "True" />
                        <SelectorStyle BackColor= "#669999" />
                        <WeekendDayStyle BackColor= "#CC66FF" BorderColor= "#00CC66" ForeColor= "#333300" 
                                HorizontalAlign= "Center" Wrap= "True" />
                        <TodayDayStyle BackColor= "#FFCC66" ForeColor= "White" />
                        <OtherMonthDayStyle ForeColor= "#CC9966" />
                        <NextPrevStyle Font-Size= "9pt" ForeColor= "#FFFFCC" />
                        <DayHeaderStyle BackColor= "#FFCC66" Font-Bold= "True" Height= "1px" />
                        <TitleStyle BackColor= "#990000" Font-Bold= "True" Font-Size= "9pt" 
                                ForeColor= "#FFFFCC" />
                </asp:Calendar>
                <asp:Label ID= "Label1" runat= "server" Visible= "False" 
                        Width= "220px" BackColor= "#FFCCFF" Font-Names= "华文楷体" Font-Overline= "False" 
                        Font-Size= "Medium" ForeColor= "#003366"></asp:Label>
                <br />
                <asp:TextBox ID= "TextBox1" runat= "server" Visible= "False"></asp:TextBox>
                <asp:Button ID= "Button1" runat= "server" onclick= "Button1_Click" Text= "提交" 
                        Visible= "False" />
        
        </div>

         public partial  class _Default : System.Web.UI.Page
        {
                 protected  void Page_Load( object sender, EventArgs e)
                {

                }


                 protected  void Calendar1_SelectionChanged( object sender, EventArgs e)
                {
                                 this.Calendar1.SelectionChanged +=  new EventHandler(Calendar1_SelectionChanged);
                                TextBox1.Visible =  true; Button1.Visible =  true; Label1.Visible =  true;
                                 this.Label1.Text = Calendar1.SelectedDate.ToShortDateString();
                                Calendar1.Visible =  false;


                    
                }

                 protected  void Button1_Click( object sender, EventArgs e)
                {
         
                        
                                Label1.Visible =  true;
                                 this.Label1.Text =  this.TextBox1.Text;
                                TextBox1.Visible =  false; Button1.Visible =  false;