ASP.NET通过更改Url进行页面传值
这里,通过假数据,手动创建的一个类,然后创建的一个集合,放入下拉框,选好值以后,点确定
会在另一个页面产生对应的id,有不懂的欢迎评论
创建一个类:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication1
{
public class Dept
{
public int Id { get; set; }
public string DeptName { get; set; }
}
}
一个选择的web窗体
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Dept.aspx.cs" Inherits="WebApplication1.Dept1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true">
</asp:DropDownList>
</div>
<p>><a href="dept_<%=DropDownList1.SelectedValue %>.html">查询</a></p>
</form>
</body>
</html>
选择的web窗体的后台代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1
{
public partial class Dept1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
LoadDeptData();
}
}
private void LoadDeptData()
{
//手动创建数据
List<Dept> depts = new List<Dept>
{
new Dept{Id=1,DeptName="小明"},
new Dept{Id=2,DeptName="小王"},
new Dept{Id=3,DeptName="小李"}
};
this.DropDownList1.DataSource = depts;
//默认显示的值
this.DropDownList1.DataTextField = "DeptName";
this.DropDownList1.DataValueField = "Id";
//保存
this.DropDownList1.DataBind();
}
}
}
建一个继承Modules类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
namespace WebApplication1.Modules
{
public class DeptModule : IHttpModule
{
public void Dispose()
{
}
public void Init(HttpApplication context)
{
context.BeginRequest += Context_BeginRequest;
}
private void Context_BeginRequest(object sender, EventArgs e)
{
//处理请求
//获取请求url
HttpApplication application = sender as HttpApplication;
//相对路径
string url = application.Request.RawUrl;
//一个正则,用来匹配是不是相对应的页面
Regex regex = new Regex(@"dept_(\d+).html");
//正则的匹配后的,微软给铺好的路,正则匹配后的一个数组;
GroupCollection groupCollection = regex.Match(url).Groups;
//这里取得是数组的第一个值,看看是不是成功匹配了,
if (groupCollection[0].Success)
{
//取到第二个值
var id = groupCollection[1].Value.Trim('_');
//存储id,等用到的时候直接去第二个页面去取值
HttpContext.Current.RewritePath("~/DeptDetail.aspx","","deptid="+id);
}
}
}
}
建完了类,要进入配置文件进行配置
因为我这里是放在一个文件夹下面了,所以配置文件指定type的时候,要加一个文件夹的路径
<system.webServer>
<modules>
<add name="Module" type="WebApplication1.Modules.DeptModule"/>
</modules>
</system.webServer>
显示的web窗体
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DeptDetail.aspx.cs" Inherits="WebApplication1.DeptDetail" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</div>
</form>
</body>
</html>
显示的web窗体的后台代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1
{
public partial class DeptDetail : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//直接通过request获取Module存入的id
this.TextBox1.Text = $"{Request.QueryString["deptid"]}";
}
}
}
}
效果图
选择一个后点击查询
地址栏和内容都进行了更改