一般处理程序cookie和session+末尾的多选框，下拉框
登录界面
<body>
<form action="Login.ashx" method="post">
<input type="hidden" name="viewstate" value="123" id="viewstase" />
<table style="margin:200px auto 0px;">
<tr><td colspan="2" style="text-align:center">登陆系统</td></tr>
<tr>
<td>用户名：</td>
<td> <input type="text" name="username" value="$name" id="username" /></td>
</tr>
<tr>
<td>密码：</td>
<td> <input type="text" name="pwd" id="pwd" value="$pwd" /> </td>
</tr>
<tr><td colspan="2" style="text-align:center"> <input type="submit" value="登陆" /> </td></tr>
</table>
</form>
</body>
登录页面.ashx
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data.SqlClient; using FirstWeb; using System.IO; using System.Web.SessionState; namespace Lesson3 { /// <summary> /// Login 的摘要说明 /// </summary> public class Login: IHttpHandler, IRequiresSessionState { public void ProcessRequest(HttpContext context) { //context.Response.ContentType = "text/html"; //context.Response.Write("Hello World"); context.Response.ContentType = "text/html"; string name = context.Request["username"]; string Pwd = context.Request["pwd"]; string path = context.Request.MapPath("Login.htm"); //将Login.htm文件的相对路径改为绝对路径 string loginhtml = File.ReadAllText(path); //读取文件内容 string viewstate = context.Request["viewstate"]; bool IsPostBack = !string.IsNullOrEmpty(viewstate); if(!IsPostBack) //第一次访问页面 { HttpCookie cookie = context.Request.Cookies["Login"]; if(cookie != null) { //获取客户端保存的HttpCookie对象或值：context.Request.Cookies["Login"] string username = cookie["name"]; string userpwd = cookie.Values["pwd"]; loginhtml = loginhtml.Replace("$name", username).Replace("$pwd", userpwd); } else { loginhtml = loginhtml.Replace("$name", "").Replace("$pwd", ""); } context.Response.Write(loginhtml); return; } string sql = "select count(*) from Users where UserName=@username and Pwd=@pwd"; SqlParameter[] sps = { new SqlParameter("@username", name), new SqlParameter("@Pwd", Pwd) }; int result = Convert.ToInt32(sqlhelper.GetExecuteScalar(sql, sps)); if(result > 0) { //HttpCookie cookie = new HttpCookie("Login"); //cookie.Values["name"] = name; //cookie["pwd"] = Pwd; //cookie.Expires = DateTime.Now.AddMinutes(1); //context.Response.Cookies.Add(cookie); context.Response.Cookies["Login"]["name"] = name; context.Response.Cookies["Login"]["pwd"] = Pwd; context.Response.Cookies["Login"].Expires = DateTime.Now.AddMinutes(1); context.Response.Write("登陆成功！"); context.Session["user"] = name; context.Application.Lock(); //修改Application数据之前，需要先加锁处理，防止别人登录(一次只让一个人登陆，防止多人同时修改数据) context.Application["online"] = Convert.ToInt32(context.Application["online"]) + 1; context.Application.UnLock(); //修改Application数据之后，需要先解锁处理，以供别人登录 context.Response.Redirect("ApplicationTest.aspx"); //context.Response.Write(cookie.Value); } else { loginhtml = loginhtml.Replace("$name", name).Replace("$pwd", Pwd); context.Response.Write(loginhtml); context.Response.Write("<script>alert('登陆失败！')</script>"); } } public bool IsReusable { get { return false; } } } }
1.AddStudent.htm
<body>
<form action="AddStudent.ashx" method="post">
<table style="margin:10px auto">
<tr>
<td colspan="2" style="text-align:center">添加学生信息</td>
</tr>
<tr>
<td>学号：</td>
<td><input id="Text1" type="text" name="stuNo" /></td>
</tr>
<tr>
<td>姓名：</td>
<td><input id="Text2" type="text" name="stuName" /></td>
</tr>
<tr>
<td>性别</td>
<td>
<input id="Radio1" type="radio" name="sex" value="男" />男
<input id="Radio2" type="radio" name="sex" value="女" />女</td>
</tr>
<tr>
<td>出生日期：</td>
<td><input id="Text4" type="text" name="birthday" /></td>
</tr>
<tr>
<td>电话：</td>
<td><input id="Text5" type="text" name="phone" /></td>
</tr>
<tr>
<td>地址：</td>
<td><input id="Text6" type="text" name="address" /></td>
</tr>
<tr>
<td>Email:</td>
<td><input id="Text7" type="text" name="email" /></td>
</tr>
<tr>
<td colspan="2" style="text-align:center"> <input id="Submit1" type="submit" value="添加" /></td>
</tr>
</table>
</form>
</body>
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.IO; using System.Data.SqlClient; using FirstWeb; namespace Lesson3 { /// <summary> /// AddStudent 的摘要说明 /// </summary> public class AddStudent: IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/html"; //1.接收数据，这是从添加页面的name="stuName"获取的用户输入的信息 string stuName = context.Request["stuName"]; string stuNo = context.Request["stuNo"]; string sex = context.Request["sex"]; string birthday = context.Request["birthday"]; string phone = context.Request["phone"]; string address = context.Request["address"]; string email = context.Request["email"]; //将htm文件的相对路径转为绝对路径 string path = context.Request.MapPath("AddStudent.htm"); string html = File.ReadAllText(path); //2.对接收数据进行处理 string msg = ""; if(string.IsNullOrEmpty(stuNo)) { msg = msg + "学号不能为空"; //context.Response.Write("<script>alert('学号不能为空！')</script>"); } if(string.IsNullOrEmpty(sex)) { msg += "\\n请选择性别"; } if(!string.IsNullOrEmpty(birthday)) { DateTime birth; bool tag = DateTime.TryParse(birthday, out birth); if(!tag) { msg += "\\n日期格式错误"; } } if(msg != "") { context.Response.Write("<script>alert('" + msg + "')</script>"); context.Response.Write(html); context.Response.End(); } string sql = "declare @loginId int insert into users values(@username,@pwd);set @loginId=scope_identity();" + "insert into tab_student values (@stuNo,@stuName,@sex,@birthday,@phone," + "@address,@email,@IsDel,@loginId)"; SqlParameter[] sps = { new SqlParameter("@username", stuNo), new SqlParameter("@pwd", stuNo), new SqlParameter("@stuNo", stuNo), new SqlParameter("@stuName", stuName), new SqlParameter("@sex", sex), new SqlParameter("@birthday", birthday), new SqlParameter("@phone", phone), new SqlParameter("@address", address), new SqlParameter("@email", email), new SqlParameter("@IsDel", false) }; int insert = sqlhelper.GetExecuteNotQuery(sql, sps); if(insert > 0) { // context.Response.Write("<script>alert('登陆成功')</script>"); context.Response.Redirect("StudentList.ashx"); //context.Response.Write(html); //context.Response.End(); } else { context.Response.Write("<script>alert('添加失败')</script>"); context.Response.Write(html); context.Response.End(); } } public bool IsReusable { get { return false; } } } }
2-1StudentList.htm
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <script type="text/javascript"> function confrim() { if(confirm("是否要删除！")) { return true; } return false; } </script> </head> <body> <div style="width:800px"> <input type="button" name="sub" value="添加" onclick="Add();" /> <script type="text/javascript"> function Add() { window.location.href = "AddStudent.htm"; } </script> <!--//<form action="StudentList.ashx" method="post">--> <form method="post"> $tbody </form> </div> </body> </html>
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data.SqlClient; using System.Configuration; using System.Text; using System.Data; using FirstWeb; using System.IO; namespace Lesson3 { /// <summary> /// StudentList 的摘要说明 /// </summary> public class StudentList: IHttpHandler { public void ProcessRequest(HttpContext context) { string flag = context.Request.QueryString["flag"]; if(!string.IsNullOrEmpty(flag)) { int result = Convert.ToInt32(flag); if(result > 0) { context.Response.Write("<script>alert('删除成功')</script>"); } else { context.Response.Write("<script>alert('删除失败')</script>"); } } context.Response.ContentType = "text/html"; string path = context.Request.MapPath("StudentList.htm"); string html = File.ReadAllText(path); StringBuilder table = new StringBuilder(); table.Append("<table style='width:800px;margin:10px auto;text-align:center;'>"); table.Append("<tr><th>学号</th><th>姓名</th><th>性别</th><th>出生日期</th><th>年纪</th><th>电话</th><th>地址</th><th>Email</th><th>操作</th></tr>"); string sql = "select * from tab_student"; DataTable dt = sqlhelper.GetDataTable1(sql); foreach(DataRow dr in dt.Rows) { string age = ""; if(dr["birthday"] == DBNull.Value) { age = "未知"; } else { int nowyear = DateTime.Now.Year; int oldyear = Convert.ToDateTime(dr["birthday"]).Year; if(oldyear == 1900) { age = "未知"; } else { age = (nowyear - oldyear).ToString(); } } string stuNo = dr["stuNo"].ToString(); string stuName = dr["stuName"].ToString(); string sex = dr["sex"].ToString(); string birthday = dr["birthday"].ToString(); string phone = dr["phone"].ToString(); string address = dr["address"].ToString(); string email = dr["email"].ToString(); string loginid = dr["loginId"].ToString(); table.Append("<tr><td>" + stuNo + "</td><td>" + stuName + "</td><td>" + sex + "</td><td>" + birthday + "</td><td>" + age + "</td><td>" + phone + "</td><td>" + address + "</td><td>" + email + "</td>" + "<td><a href='StudentDel.ashx?id=" + loginid + "' onclick='return confrim(\"是否要删除\")'>删除</a>" + " <a href='StudentExitShow.ashx?id=" + loginid + "'</td>修改</tr>"); } table.Append("</table>"); // table.ToString(); html = html.Replace("$tbody", table.ToString()); context.Response.Write(html); } public bool IsReusable { get { return false; } } } }
1 ban 2 ban 3 ban 4 ban RadioButtonList 只要是列表xxList都有ListItem 列表选项 RadioButtonList1就是班级框列表 操作代码都是写在按钮里的， 然后在按钮里绑定其控件 if(RadioButtonList1.selectedIndex < 0) { response.write("<script>alert('选择班级')</script>"); return; } Response.Write("<script>alert('你选择的班级的index是" + RadioButtonList1.SelectedIndex + "')</script>"); Response.Write(""); -- -- -- -- -- -- -- -- 男 女 string s = ""; if(RadioButton1.cheched) { s = RadioButton1.Text; } if(RadioButton2.Checked) { s = RadioButton2.Text; } response.write("<script>alert('" + s + "')</script>"); -- -- -- -- -- -- -- -- -- -- 爱好： 篮球 足球 多选框 CheckBoxList1 string s = ""; for循环出所有选中的 foreach(ListItem item in CheckBoxList1.item) { if(item.Selected) { s = s + item.Text + ""; } response.Write("<script>alert('" + s + "')</script>"); }
人各有命，上天注定，有人天生为王，有人落草为寇。脚下的路，如果不是你自己的选择，那么旅程的终点在哪，也没人知道。你会走到哪，会遇到谁，都不一定。
