asp.net之实现动态创建下拉菜单和日历的选择

这个问题纠结了好久，一直想用select实现动态创建下拉列表的效果，但是select中没有AutoPostBack

所以调用onServerChange时没有实现跳转，

具体的大家可以参照一下这个网站：

http://msdn.microsoft.com/zh-cn/library/system.web.ui.htmlcontrols.htmlselect.onserverchange(v=VS.80).aspx

下面我将用dropDownList实现动态创建下拉菜单和日历的选择：

后台代码部分：

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    private int year;
    private int month;
    private int day;
    private String now_time;

    protected void Page_Load(object sender, EventArgs e)
    {
        //Select1.Attributes.Add("onserverchange", Page.GetPostBackEventReference(Select1));
        if (!IsPostBack)
        {
            initSelect();
            now_time = year.ToString() + "-" + month.ToString() + "-" + day.ToString();

            Select2.Items[10].Selected = true;//以为这里设置当前时间的左右各20天，所以去当前时间为10
            this.Calendar1.SelectedDate = DateTime.Parse(now_time);
        }
        
    }
    //当点击dropDownList时触发事件
    protected void select_date(object sender, EventArgs e)
    {
        
        int select_year = Convert.ToInt32(Select2.Items[Select2.SelectedIndex].Value);
        int select_month = Convert.ToInt32(Select1.Items[Select1.SelectedIndex].Value);
        int select_day = DateTime.Now.Day;
        Select1.Items[Select1.SelectedIndex].Selected = true;
        String select_now_time = select_year.ToString() + "-" + select_month.ToString() + "-" + select_day.ToString();

        this.Calendar1.Controls.Clear();
        this.Calendar1.VisibleDate = DateTime.Parse(select_now_time);
    }
    //当选择日历时触发事件
    protected void calendar_change(object sender, EventArgs e)
    {
        initSelect();
        int calendar_year = this.Calendar1.SelectedDate.Year;
        int calendar_month = this.Calendar1.SelectedDate.Month;
        int calendar_day = this.Calendar1.SelectedDate.Day;
        int now_year=DateTime.Now.Year;

        initSelect();
        //Select1.Items[Select1.SelectedIndex].Selected = false;
        Select1.Items[calendar_month - 1].Selected = true;
        //Select2.Items[Select1.SelectedIndex].Selected = false;
        Select2.Items[calendar_year - now_year + 10].Selected = true;
       
    }
    //初始化以及创建色了select2的下拉列表
    public void initSelect()
    {
        year = DateTime.Now.Year;
        month = DateTime.Now.Month;
        day = DateTime.Now.Day;

        for (int j = 0; j < Select1.Items.Count; j++)
        {
             Select1.Items[j].Selected = false;

        }
        Select2.Items.Clear();
        for (int i = year - 10; i < year + 10; i++)
        {
            ListItem obj = new ListItem();
            obj.Text = i.ToString();
            obj.Value = i.ToString();
            obj.Selected = false;
            Select2.Items.Add(obj);
        }
        
    }
}

前台代码部分：

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="calendar_Test.aspx.cs" Inherits="_Default" %>





    


    

    

        
            一月
            二月
            三月
            四月
            五月
            六月
            七月
            八月
            九月
            十月
            十一月
            十二月
        
        
        
        

        
    
    
    
    
    
    
    

    
    

图片效果：

谢谢观赏！