C#小知识

1、Request.Params["id"] ,Request.Form["id"] ,Request.QueryString["id"] 的用法以及区别

1. Request.Params是所有post和get传过来的值的集合,
2. Request.Form是取post传值,
3. Request.QueryString是get传过来的值

1、IHttpHandler读取Session的值

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Script.Serialization; 
using System.Text;
using System.Web.SessionState;
//第一步、IHttpHandler默认没有实现IRequiresSessionState这个标记接口，要实现这个接口System.Web.SessionState
//第二步、System.Web.HttpContext.Current.Session[" usename "];context.Session[“usename”] 
public class SaveRegion : IHttpHandler,IRequiresSessionState
    { 
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";  
            string username = context.Session["username"].ToString(); 
        }
}

 

 

2、给前端控件添加事件

            this.HyperLink1.Attributes.Add("onclick", "getDropDownList(1)");
            this.HyperLink1.NavigateUrl = "javascript:getDropDownList(1)";