这是在这儿的第1篇随笔,因今天休息,便试着用ajax写了写出生年月日选择,初学...
.aspx文件代码
<%@ Page Language="C#" ResponseEncoding="gb2312"%><%@ Import Namespace="System" %><%@ Import Namespace="System.Data"%><%@ Import Namespace="System.Data.SqlClient"%><script language="C#" runat="server"> DataSet ds; protected void Page_Load(object sender, EventArgs e)
{
Ajax.Utility.RegisterTypeForAjax(typeof(AjaxMethod)); if (!Page.IsPostBack)
{ ds = AjaxMethod.GetYears(); this.DropDownList4.DataSource = ds.Tables["years"]; this.DropDownList4.DataTextField = "YEARS"; this.DropDownList4.DataValueField = "YEARS"; this.DropDownList4.DataBind(); ds = AjaxMethod.GetMonths(); this.DropDownList5.DataSource = ds.Tables["months"]; this.DropDownList5.DataTextField = "MONTHS"; this.DropDownList5.DataValueField = "MONTHS"; this.DropDownList5.DataBind(); this.DropDownList4.Attributes.Add("onclick", "daysResult();"); this.DropDownList5.Attributes.Add("onclick", "daysResult();"); 
}
}/// <summary> /// 添加年份(1900-2100)及日期 /// </summary> protected void insert_years() { string str = string.Empty; //添加年份部分 for (int i = 1900; i < 2100; i++) { str = string.Empty; //判断是否为闰年 if (((i % 4) == 0 && (i % 100) != 0) || (i % 400) == 0) { str = "INSERT INTO YEARS(YEARS,IS_LEAP) VALUES(" + i + ",1)"; int k = new Mssql().ExecuteSql(str); } else { str = "INSERT INTO YEARS(YEARS,IS_LEAP) VALUES(" + i + ",0)"; int k = new Mssql().ExecuteSql(str); } } //添加日期 for (int i = 1; i < 31; i++) { //小月 str = string.Empty; str = "INSERT INTO DAYS(DAYS,IS_MONTH) VALUES(" + i + ",0)"; int k = new Mssql().ExecuteSql(str); } for (int i = 1; i < 32; i++) { //大月 str = string.Empty; str = "INSERT INTO DAYS(DAYS,IS_MONTH) VALUES(" + i + ",1)"; int k = new Mssql().ExecuteSql(str); } for (int i = 1; i < 29; i++) { //2月 str = string.Empty; str = "INSERT INTO DAYS(DAYS,IS_MONTH) VALUES(" + i + ",2)"; int k = new Mssql().ExecuteSql(str); } for (int i = 1; i < 30; i++) { //闰年2月 str = string.Empty; str = "INSERT INTO DAYS(DAYS,IS_MONTH) VALUES(" + i + ",3)"; int k = new Mssql().ExecuteSql(str); } } </script><!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 id="Head1" runat="server"> <title>years_months_days</title> <meta content="JavaScript" name="vs_defaultClientScript"> <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema"> <meta content="C#" name="CODE_LANGUAGE"> </head><script language="javascript">//生日年月日 function daysResult(){ /*获取年份和月分,并判断是否是闰年及月份,并获取相应的天数*/ var years = document.getElementById("DropDownList4").value; var months = document.getElementById("DropDownList5").value; var is_month =0; if((years % 4 == 0 && years % 100 != 0) || years % 400 ==0 ){ if(months == 2){ is_month=3; } else if(months == 1 || months == 3 || months == 5 || months == 7 || months == 8 || months == 10 || months == 12){ is_month=1; } else{ is_month=0; } } else{ if(months == 2){ is_month=2; } else if(months == 1 || months == 3 || months == 5 || months == 7 || months == 8 || months == 10 || months == 12){ is_month=1; } else{ is_month=0; } } //alert(is_month); AjaxMethod.GetDays(is_month,get_days_Result_CallBack); } function get_days_Result_CallBack(response){ if(response.value != null){ document.all("DropDownList6").length = 0; var ds = response.value; if(ds != null && typeof(ds)=="object" && ds.Tables != null){ for(var i=0;i<ds.Tables[0].Rows.length;i++){ var name = ds.Tables[0].Rows[i].DAYS; var id=ds.Tables[0].Rows[i].DAYS_ID; document.all("DropDownList6").options.add(new Option(name,id)); } } } return; }</script><body><form id="form1" runat="server"> <table border="1" style="color:BlanchedAlmond"> <tr> <td style="100px" align="right"><font style="color:Black">您的生日:</font></td> <td align="left" colspan="3"> <asp:DropDownList ID="DropDownList4" runat=server></asp:DropDownList><font style="color:Black">年</font> <asp:DropDownList ID="DropDownList5" runat=server></asp:DropDownList><font style="color:Black">月</font> <asp:DropDownList ID="DropDownList6" runat=server></asp:DropDownList><font style="color:Black">日</font> </td> </tr></table> </form></body></html>AjaxMethod.cs
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;using System.Data.SqlClient;public class AjaxMethod{ public AjaxMethod() { // // TODO: 在此处添加构造函数逻辑 // }
年份 月份 日期}DataBase.cs
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;using System.Data.SqlClient;public class DataBase{ // 连接数据源 private SqlConnection con = null; private static ConnectionStringSettings settings; private static string conStr; public DataBase() { settings = ConfigurationManager.ConnectionStrings["ConnectionString"]; conStr = settings.ToString(); con = new SqlConnection(conStr); }/// <summary> /// 根据SQL查询返回DataSet对象，如果没有查询到则返回NULL /// </summary> /// <param name="sql">查询语句</param> /// <returns>DataSet</returns> public DataSet returnDS(string sql) { DataSet ds=new DataSet(); try { SqlCommand cmd =new SqlCommand(sql,con); cmd.CommandTimeout=20; this.Open(); SqlDataAdapter adapter=new SqlDataAdapter(cmd); adapter.Fill(ds,"tempTable"); } catch(Exception e) { ds = null; throw(e); } finally { this.Close(); } return ds; } /// <summary> /// 打开数据库连接. /// </summary> private void Open() { if(con.State == System.Data.ConnectionState.Closed) { con.Open(); } else if(con.State == System.Data.ConnectionState.Broken) { con.Close(); con.Open(); } } /// <summary> /// 关闭数据库连接 /// </summary> public void Close() { if (con != null) { con.Close(); } } /// <summary> /// 释放资源 /// </summary> public void Dispose() { if (con != null) { con.Dispose(); con = null; } }}数据库脚本
CREATE TABLE YEARS( YEARS_ID INT IDENTITY PRIMARY KEY, YEARS INT,--年份 IS_LEAP TINYINT--是否闰年)CREATE TABLE MONTHS( MONTHS_ID TINYINT IDENTITY PRIMARY KEY, MONTHS TINYINT)CREATE TABLE DAYS( DAYS_ID TINYINT IDENTITY PRIMARY KEY, DAYS TINYINT, IS_MONTH TINYINT--根据月份选择天数)
还需要Ajax.dll.
注:工程是VS2005写的.