1796310.aspx?ASP+NET+form+method+post+and+get+

GET:
1) Data is appended to the URL(QueryString)
2) Data is not secret.(Can be seen by anyone)
3) It is a single call system
4) Maximum data that can be sent is 256.
5) Data transmission is faster
6) This is the default method for many browsers

POST:
1) Data is not appended to the URL but sent as part of Http Body.
2) Data is Secret
3) It is a two call system.
4) There is no Limit on the amount of data.That is characters any amount of data can be sent.
5) Data transmission is comparatively slow.
6) No default and should be Explicitly specified.

https://social.technet.microsoft.com/wiki/contents/articles/11697.using-method-type-postget-in-asp-net-web-form.aspx

I will start the article from with detailed information.

Actually form has two types of in asp.net2.0.
1) Get
2) Post

When working with Get method:

We can access all form input variables in the next page which we mentioned in the action attribute.
All the submitted information is displayed in the address bar as part of the URL.
Url Which is not secured because values will be shown in address bar

When working with Post method:

we can access the variables in the page which we mentioned in the action attribute.
we can access those variable as shown below
which is more secured, variable not accessible

Now we will have small application with 2 web pages

1) default.aspx

2) Webform.aspx

GET:

I have given the value for action attribute is webform1.aspx in the default.aspx page with method type

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Untitled Page</title>

</head>

<body>

First name: <input type="text" name="fname" /><br />

Last name: <input type="text" name="lname" /><br />

Age: <input type="text" name="age" /><br />

</form>

</body>

</html>

Variables will be available in the address bar like below .

http://localhost:50920/webform1.aspx?fname=jhon&lname=smith&age=30

We can access the variables from the Address to Form using Request.QueryString[] like below.

protected void Page_Load(object sender, EventArgs e)

{

if (Request.QueryString["fname"] != null)

{

Response.Write("fname : " + Request.QueryString["fname"] + \n");

}

if (Request.QueryString["lname"] != null)

{

Response.Write("lname : " + Request.QueryString["lname"] + "");

}

POST:

Variables will be post to the next page using Post method type

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Untitled Page</title>

</head>

<body>

First name: <input type="text" name="fname" /><br />

Last name: <input type="text" name="lname" /><br />

Age: <input type="text" name="age" /><br />

</form>

</body>

</html>

We cannot access the variables from the url.

http://localhost:50920/webform1.aspx

We can access the variables from the request. Form [].

protected void Page_Load(object sender, EventArgs e)

{

if (Request.Form["fname"] != null)

{

Response.Write("fname : " + Request.Form["fname"] + "\n");

}

if (Request.Form["lname"] != null)

{

Response.Write("lname : " + Request.Form["lname"] + "");

}

https://www.w3schools.com/tags/ref_httpmethods.asp

The GET Method

Note that the query string (name/value pairs) is sent in the URL of a GET request:

/test/demo_form.php?name1=value1&name2=value2

Some other notes on GET requests:

GET requests can be cached
GET requests remain in the browser history
GET requests can be bookmarked
GET requests should never be used when dealing with sensitive data
GET requests have length restrictions
GET requests should be used only to retrieve data

The POST Method

Note that the query string (name/value pairs) is sent in the HTTP message body of a POST request:

POST /test/demo_form.php HTTP/1.1
Host: w3schools.com
name1=value1&name2=value2

Some other notes on POST requests:

POST requests are never cached
POST requests do not remain in the browser history
POST requests cannot be bookmarked
POST requests have no restrictions on data length

https://security.stackexchange.com/questions/33837/get-vs-post-which-is-more-secure

POST is more secure than GET for a couple of reasons.

GET parameters are passed via URL. This means that parameters are stored in server logs, and browser history. When using GET, it makes it very easy to alter the data being submitted the the server as well, as it is right there in the address bar to play with.

The problem when comparing security between the two is that POST may deter the casual user, but will do nothing to stop someone with malicious intent. It is very easy to fake POST requests, and shouldn't be trusted outright.

The biggest security issue with GET is not malicious intent of the end-user, but by a third party sending a link to the end-user. I cannot email you a link that will force a POST request, but I most certainly can send you a link with a malicious GET request. I.E:

Click Here for the best free movies!

Edit:

I just wanted to mention that you should probably use POST for most of your data. You would only want to use GET for parameters that should be shared with others, i.e: /viewprofile.php?id=1234, /googlemaps.php?lat=xxxxxxx&lon=xxxxxxx

ASP.NET form method "post" and "get"的更多相关文章

html form method 属性不支持put,delete请求方式，以及开启spring mvc的rest的方式
1.加上隐藏域解决form method 不支持put,delete的请求方式的问题 2.配置spring mvc HiddenHttpMethodFilter过滤器实现对put和delete请求方式 ...
asp.net form身份认证不定时认证失败的问题排查
1.网站出现form认证不定时认证失败.登陆过后每隔一会儿就需要重新登陆.首先检查的是form身份认证票据设置的时间(正常) 然后检查加密后的身份认证信息写入的cookie的失效时间(正常) 2.这 ...
Asp.Net Form验证不通过,重复登录
问题产生根源: 当然,其实应该需要保持线上所有机器环境一致!可是,写了一个小程序.使用的是4.5,aysnc/await实在太好用了,真心不想把代码修改回去. so,动了念头,在这台服务器上装个4.5 ...
Asp.net Form登陆认证的回顾学习
asp.net网站中,我最常用的就是Form认证了,在实现登陆时,利用Form认证实现用户的访问权限,哪些页面是可以匿名登陆,哪些页面需要认证后才能访问,哪些页面不能访问等等权限.我还可在登陆时,使用 ...
asp.net Form 认证【转】
第一部分如何运用 Form 表单认证一. 新建一个测试项目为了更好说明,有必要新建一个测试项目(暂且为“FormTest”吧),包含三张页面足矣(Default.aspx.Logi ...
Asp.Net Form表单控件的回车默认事件
当form表单文本框控件在收到回车事件时,默认会触发表单内第一个可提交按钮的事件,但业务中可能要求有其它控件进行提交,而不是这个默认的这时需要脚本控件事件冒泡传递取消回事事件. $(document ...
Asp.Net Form验证不通过,重复登录（.net4,4.5form验证兼容性问题）
问题产生根源: 当然,其实应该需要保持线上所有机器环境一致!可是,写了一个小程序.使用的是4.5,aysnc/await实在太好用了,真心不想把代码修改回去. so,动了念头,在这台服务器上装个4.5 ...
asp.net form 验证方式的使用（转载）
如何运用 Form 表单认证 ASP.NET 的安全认证,共有“Windows”“Form”“Passport”“None”四种验证模式.“Windows”与“None”没有起到保护的作用,不推荐使用 ...
form&method【POST~GET】
<form.../>中method属性指定了该表单是以哪种方式提交请求,有两种方式:GET请求方式和POST请求方式,默认是GET请求方式.两种方式的区别:get方式的请求是在浏览器地址栏 ...

随机推荐

SVN各种异常解决整理
错误1:工作副本已锁定由于周末公司server停机维护,今天在用SVN提交业务时,直接报错: 同一时候给了解决的方法:请运行清理命令直接返回上级文件夹单击右键.运行清除命令后,再次提交! OK! ...
web后台知识点整理
五.JEE 适用于创建server端的大型的软件服务系统 1. JEE : JAVA PLATFORM ENTERPRISE DEDITON 2.是一个规范集.技术集.框架集(API集) 一种技 ...
[SCOI 2005] 栅栏
[题目链接] https://www.lydsy.com/JudgeOnline/problem.php?id=1082 [算法] 首先二分“最多得到的符合条件的木板数”,检验时可以使用DFS,但是, ...
PySide2运行出错问题解决
PySide2是QT官方出的Python的QT封装, 不过默认安装运行时候会有一些小问题, 可能是系统里已经安装过其他版本QT的原因, 会报错如下: PySide2 qt.qpa.plugin: Co ...
Python学习历程之模块浅识
# =============================操作系统模块=======================# import os# 待续# ======================= ...
js判断传入时间和当前时间大小
//判断时间是否过期 function judgeTime(time){ var strtime = time.replace("/-/g", "/");//时 ...
java 读写分离
源码地址:http://git.oschina.net/xiaochangwei 先回答下 1.为啥要读写分离? 大家都知道最初开始,一个项目对应一个数据库,基本是一对一的,但是由于后来用户及数据还有 ...
JS面向对像编程四—— prototype 对象
http://blog.csdn.net/fanwenjieok/article/details/54575560 大部分面向对象的编程语言,都是以“类”(class)作为对象体系的语法基础.Java ...
leetcode525. 连续数组 python
给定一个二进制数组, 找到含有相同数量的 0 和 1 的最长连续子数组. 示例 1: 输入: [0,1] 输出: 2 说明: [0, 1] 是具有相同数量0和1的最长连续子数组. 示例 2: 输入: ...
laravel 知识点总结
1.eloquent 关系理解: https://lvwenhan.com/laravel/423.html

ASP.NET form method "post" and "get"