梅花日历如何实现？

给你写了一个。
前台
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="use.aspx.cs" Inherits="use" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Calendar</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
       <table>
          <tr>
             <td>
             <asp:TextBox ID="TextBoxDate" runat="server"></asp:TextBox>
             <asp:Button ID="Button1" runat="server" Text="..." />
           
             </td>
          </tr>
          <tr>
             <td>
             <asp:Panel ID="PanelCalendar" runat="server" Visible="true">
             <asp:Calendar ID="Calendar1" runat="server" OnSelectionChanged="Calendar1_SelectionChanged">
             </asp:Calendar>
        
        
             </asp:Panel>
        
             </td>
        
           </tr>
        
        </table>
    </div>
    </form>
</body>
</html>
后台using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;public partial class use : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }    public string Text
    {
        get
        {
            return this.TextBoxDate.Text;
        }
        set
        {
            this.TextBoxDate.Text = value;        }
    }
    protected void Calendar1_SelectionChanged(object sender, EventArgs e)
    {
        TextBoxDate.Text = Calendar1.SelectedDate.ToShortDateString();
        
    }
}