Get POST data in C ASP NET

Question

I am trying to get POST data  but I m having no luck  My code is below  When I click the form button nothing happens   I expected at least my IDE to snap at A Ret    but nothing happens whatsoever   File Test cs  using System Web  public class A       public static string ret             var c   HttpContext Current          var v   c Request QueryString      lt -- I can see get data in this         return c Request UserAgent ToString            return c Request UserHostAddress ToString            return  woot             File Default aspx   lt    Page Language  C   AutoEventWireup  true  CodeBehind  Default aspx cs  Inherits  aspnetCSone  Default    gt    lt  DOCTYPE html PUBLIC  -  W3C  DTD XHTML 1 0 Transitional  EN   http   www w3 org TR xhtml1 DTD xhtml1-transitional dtd  gt    lt html xmlns  http   www w3 org 1999 xhtml   gt       lt head runat  server  gt           lt title gt Untitled Page lt  title gt       lt  head gt        lt body gt           lt form id  form1  runat  server  method  post  action  Default aspx  gt               lt input type hidden name  AP  value  99    gt               lt input type button value  Submit    gt               lt div gt                   lt a id  aa  gt a lt  a gt                   lt     A ret     gt               lt  div gt           lt  form gt       lt  body gt   lt  html gt

User · Answer

c Request  AP   will read posted values  Also you need to use a submit button to post the form    lt input type  submit  value  Submit    gt    instead of   lt input type button value  Submit    gt

User · Answer

I m a little surprised that this question has been asked so many times before  but the most reuseable and friendly solution hasn t been documented   I often have webpages using AngularJS  and when I click on a Save button  I ll  POST  this data back to my  aspx page or  ashx handler to save this back to the database   The data will be in the form of a JSON record   On the server  to turn the raw posted data back into a C  class  here s what I would do   First  define a C  class which will contain the posted data     Supposing my webpage is posting JSON data like this          UserID    1       FirstName     Mike        LastName     Mike        Address1     10 Really Street        Address2     London      Then I d define a C  class like this     public class JSONRequest       public int UserID   get  set        public string FirstName   get  set        public string LastName   get  set        public string Address1   get  set        public string Address2   get  set         These classes can be nested  but the structure must match the format of the JSON data   So  if you re posting a JSON User record  with a list of Order records within it  your C  class should also contain a List lt  gt  of Order records    Now  in my  aspx cs or  ashx file  I just need to do this  and leave JSON Net to do the hard work         protected void Page Load object sender  EventArgs e                string jsonString               HttpContext Current Request InputStream Position   0          using  StreamReader inputStream   new StreamReader this Request InputStream                         jsonString   inputStream ReadToEnd                      JSONRequest oneQuestion   JsonConvert DeserializeObject lt JSONRequest gt  jsonString     And that s it   You now have a JSONRequest class containing the various fields which were POSTed to your server

User · Answer

Try using   string ap   c Request  AP      That reads from the cookies  form  query string or server variables   Alternatively   string ap   c Request Form  AP      to just read from the form s data

User · Answer

The following is OK in HTML4  but not in XHTML  Check your editor    lt input type button value  Submit    gt

[c#] Get POST data in C#/ASP.NET

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