C# 数组作为DropDownList数据源实例---年月日加载

1.  protected void Page_Load(object sender, EventArgs e)  
2.         {  
3.               
4.             bindday(yearDropDL.SelectedValue, monthDropDL.SelectedValue);  
5.         }  
6.         public void bindday(string y, string m)  
7.         {  
8.             int year = int.Parse(y);  
9.             int month = int.Parse(m);  
10.             int[] lp = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 };  
11.             int[] nlp = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 };  
12.             int[] lm = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 };  
13.             int[] bm = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };  
14.             if (month == 2)  
15.             {  
16.                 if (year % 100 == 0)  
17.                 {  
18.                     if (year % 400 == 0)  
19.                     {  
20.                         dayDropDL.DataSource = lp;  
21.                         dayDropDL.DataBind();  
22.                     }else  
23.                    {  
24.                     dayDropDL.DataSource = nlp;  
25.                     dayDropDL.DataBind();  
26.                    }  
27.                 }  
28.                 else if (year % 4 == 0)  
29.                 {  
30.                     dayDropDL.DataSource = lp;  
31.                     dayDropDL.DataBind();  
32.                 }  
33.                 else  
34.                 {  
35.                     dayDropDL.DataSource = nlp;  
36.                     dayDropDL.DataBind();  
37.                 }  
38.             }  
39.             else if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)  
40.             {  
41.                 dayDropDL.DataSource = bm;  
42.                 dayDropDL.DataBind();  
43.             }  
44.             else  
45.             {  
46.                 dayDropDL.DataSource = lm;  
47.                 dayDropDL.DataBind();  
48.             }  

        protected void Page_Load(object sender, EventArgs e)        {                        bindday(yearDropDL.SelectedValue, monthDropDL.SelectedValue);        }        public void bindday(string y, string m)        {            int year = int.Parse(y);            int month = int.Parse(m);            int[] lp = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 };            int[] nlp = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 };            int[] lm = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 };            int[] bm = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };            if (month == 2)            {                if (year % 100 == 0)                {                    if (year % 400 == 0)                    {                        dayDropDL.DataSource = lp;                        dayDropDL.DataBind();                    }else                   {                    dayDropDL.DataSource = nlp;                    dayDropDL.DataBind();                   }                }                else if (year % 4 == 0)                {                    dayDropDL.DataSource = lp;                    dayDropDL.DataBind();                }                else                {                    dayDropDL.DataSource = nlp;                    dayDropDL.DataBind();                }            }            else if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)            {                dayDropDL.DataSource = bm;                dayDropDL.DataBind();            }            else            {                dayDropDL.DataSource = lm;                dayDropDL.DataBind();            }