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

Hadoop自学笔记（二）HDFS简单介绍
1. HDFS Architecture 一种Master-Slave结构.包括Name Node, Secondary Name Node,Data Node Job Tracker, Task T ...
VS2015--win32project配置的一些想法之在 Visual Studio 2015 中进行调试的同一时候分析性能
出处: https://msdn.microsoft.com/zh-cn/magazine/dn973013(en-us).aspx 很多开发商花了绝大多数时间获取应用程序才干正常发挥作用.更少的时间 ...
第七章用户输入和while 循环
7.1 创建多行字符串的方式: 01 prompt="if you tell me who you are, we can personalize the message you see.& ...
JQuery （总结）
延迟触发事件 Ajax异步请求数据 Jquery事件: Focus获得焦点 blur失去焦点 Change内容在变化的时候 Click点击事件 ---------------------------- ...
WINDOWS系统注册表（读、写）
读取注册表写入注册表
rel= "noopener"
rel= "noopener" <a href= "https://www.xiaogezi.cn/" target= "_blank" ...
Android设计模式——Builder(建造者)模式
1.建造者模式是一步一步创建一个复杂对象的创建模式.该模式是为了将构建复杂对象的过程和他的部件解耦,使得构建过程和部件表示隔离开. 2.Bulider模式的定义是:将一个复杂对象的构建与它的表示分离, ...
POJ 2524 Ubiquitous Religions 【并查集】
解题思路:输入总人数 n,和m组数据:即和杭电畅通工程相类似,对这m组数据做合并操作后,求最后一共有多少块区域. #include<stdio.h> int pre[50001]; int ...
Python中int，bool，str，格式化，少量is，已经for循环练习
1.整数十进制转化为二进制 xxx.bit_length(). #求十进制数转化成二进制时所占用的位数 2.布尔值 bool # 布尔值 - - 用于条件使用 True 真 Fa ...
转：用java调用oracle存储过程总结（比较好理解）
这段时间开始学习写存储过程,主要原因还是因为工作需要吧,本来以为很简单的,但几经挫折,豪气消磨殆尽,但总算搞通了,为了避免后来者少走弯路,特记述与此,同时亦对自己进行鼓励. 一:无返回值的存储过程存 ...

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