下拉的选择日期控件（user control ），功能完善，修改了bug

 1在YearMonthDayDownDropList.ascx.cs中： 
 2
 3namespace micrm.Modules   
 4{   
 5using System;   
 6using System.Data;   
 7using System.Drawing;   
 8using System.Web;   
 9using System.Web.UI.WebControls;   
10using System.Web.UI.HtmlControls; 
11
12///

 1public abstract class YearMonthDayDownDropList : System.Web.UI.UserControl   
 2{ 
 3
 4//选择的年月日如：20021225   
 5public string YearMonthDay   
 6{   
 7get   
 8{   
 9return Request.Form[YearName]+Request.Form[MonthName]+Request.Form[DayName];   
10}   
11  
12}   
13protected int ServerYear; //服务器当前选择年   
14protected int ServerMonth;//服务器当前月   
15protected int ServerNowYear; //服务器当前年   
16protected int ServerDay; //服务器当前天   
17protected int ServerMonthDays;//当前月天数   
18protected string JavascriptFunName; //此user control发出的函数名称   
19protected string YearName; //此user control发出的年控件的名称   
20protected string MonthName;//此user control发出的月控件的名称   
21protected string DayName; //此user control发出的日控件的名称   
22private void Page_Load(object sender, System.EventArgs e)   
23{   
24// 在此处放置用户代码以初始化页面   
25string id= this.UniqueID;   
26if(!this.Page.IsClientScriptBlockRegistered(id))   
27{   
28JavascriptFunName="chanday"+id+"()";   
29YearName="year"+id;   
30MonthName="month"+id;   
31DayName="day"+id;   
32string scriptString ="

 1";   
 2this.Page.RegisterClientScriptBlock(id, scriptString);   
 3}   
 4DateTime now=DateTime.Today;   
 5ServerNowYear =now.Year ;   
 6if(!Page.IsPostBack)   
 7{   
 8  
 9ServerYear=ServerNowYear ;   
10ServerMonth=now.Month;   
11ServerDay=now.Day;   
12ServerMonthDays=GetNowMonthDays(ServerYear,ServerMonth);   
13}   
14else   
15{   
16ServerYear=Convert.ToInt32(Request.Form[YearName]);   
17ServerMonth=Convert.ToInt32(Request.Form[MonthName]);   
18ServerDay= Convert.ToInt32(Request.Form[DayName]);   
19ServerMonthDays=GetNowMonthDays(ServerYear,ServerMonth);   
20}   
21}   
22private int GetNowMonthDays(int ServerYear,int ServerMonth)   
23{   
24int ServerMonthDays=31;   
25if(ServerMonth==4||ServerMonth==6||ServerMonth==9||ServerMonth==11)   
26ServerMonthDays=30;   
27else if(ServerMonth==02)   
28{   
29if((ServerYear%4==0 &&ServerYear%100!=0) || ServerYear%400==0)   
30ServerMonthDays=29;   
31else ServerMonthDays=28;   
32}   
33return ServerMonthDays;   
34}   
35protected void FillOptions(int StartValue,int OptionsLength,int SelectedOption)   
36{   
37for(int j=StartValue;j<=OptionsLength;j++)   
38{   
39string ShowOption;   
40if(j<10)   
41ShowOption="0"+j.ToString();   
42else ShowOption=j.ToString();   
43if(j==SelectedOption)   
44Response.Write("

1");   
2else Response.Write("

 1");   
 2}   
 3} 
 4
 5#region Web Form Designer generated code   
 6override protected void OnInit(EventArgs e)   
 7{   
 8//   
 9// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。   
10//   
11InitializeComponent();   
12base.OnInit(e);   
13}   
14  
15/// 设计器支持所需的方法 - 不要使用   
16/// 代码编辑器修改此方法的内容。   
17///
18private void InitializeComponent()   
19{   
20this.Load += new System.EventHandler(this.Page_Load);   
21}   
22#endregion   
23}   
24}