Read, With the Name of Your Lord Who Created

Interacting With Get and Post Methods in ASP.NET

Posted by triaslama on May 1, 2008

There are two common ways to pass data from one page to another, using http Get and Post methods. In Get method, data passed to server using URL encoding. So with Get method data added in URL as query string. For more information on how to retrieve query string values, you can read my previous post here. When we use Post method the URL is still intact, because data passed in HTTP body.

In correlation with ASP.NET, retrieving data passed through HTTP Get and Post methods is quite simple. If data passed with Get method we need the following code to retrieve the data:

Page.Request.QueryString[<param>];

If data passed with Post method we need the following code to retrieve the data:

Page.Request.Form[<param>];

Maybe the problem will more suitable addressed with hand in code practice, so let’s try a simple code! I named the HTML file as methods_source.htm:

    <html>
    <head>
    <title>Using Http Get And Post</title>
    </head>
    <body>
    <form id=”frm_get” action=”get_recv.aspx” target=”_blank” method=”GET” >
    <table>
    <tr>
    <td>Name: </td> <td><input type=”text” id=”txtName” name=”name” /></td>
    </tr>
    <tr>
    <td>Address: </td> <td><input type=”text” id=”txtAddr” name=”addr” /></td>
    </tr>
    <tr>
    <td></td> <td><input type=”submit” value=”Send Using Get” /></td>
    </tr>
    </table>
    </form>
    <p />
    <form id=”frm_post” action=”post_recv.aspx” target=”_blank” method=”POST” >
    <table>
    <tr>
    <td>Name 2: </td>
    <td><input type=”text” id=”txtName2″ name=”name2″ /> </td>
    </tr>
    <tr>
    <td>Address 2: </td>
    <td><input type=”text” id=”txtAddr2″ name=”addr2″ /> </td>
    </tr>
    <tr>
    <td></td>
    <td><input type=”submit” value=”Send Using Post” /> </td>
    </tr>
    </table>
    </form>
    </body>
    </html>

Methods_source.htm consists of two HTML forms. First form will pass data within it using GET method, and second form will pass data within it using POST method.
When we click submit button of first form, we will be redirected to get_recv.aspx (as stated in action attribute) in a new window. Click the submit button of second form will bring us to post_recv.aspx (opened in new window too). This is screenshots of our page:

Methods_source.htm

The name and address text boxes of first form will be sent as parameter of query string with the field name are name and addr respectively. The name of query string fields automatically taken from name attribute of each HTML element, so don’t forget to specify the name attribute to make it works! Inside get_recv.aspx we retrieve the query string values using Page.Request.QueryString[“name”] and Page.Request.QueryString[“addr”]. Here get_recv.aspx:

    <%@ page language=”C#” %>

    <html>
    <head>
    <title>Get: Receiver</title>
    </head>
    <body>
    <table border=”2″ cellpadding=”7″ cellspacing=”2″ >
    <tr>
    <th>Name</th> <th>Address</th>
    </tr>
    <tr>
    <td><% Response.Write(Page.Request.QueryString[“name”]); %></td>
    <td><% Response.Write(Page.Request.QueryString[“addr”]); %></td>
    </tr>
    </table>
    </body>
    </html>

When I fill name & address textboxes with ‘Muadz’ and ‘Senayan City, Jakarta’ respectively and click the ‘Send Using Get’ button I get the following URL: http:…/getpost/get_recv.aspx?name=Muadz&addr=Senayan+City%2C+Jakarta. The data from methods_source.htm will be showed in tabular format, so this is what we get:

Get_recv.aspx, name and address values taken from query string.

Values of second form sent using POST method therefore the URL still intact, we retrieve name 2 and address 2 using Page.Request.Form[<param>], <param> value taken from the name each of HTML element of second form (Once again don’t forget specify name attribute for name 2 and address 2 textboxes to make it works!). When ‘Send Using Post’ button clicked, values of second form passed to post_recv.aspx. This is code for post_recv.aspx:

    <%@ page language=”C#” %>

    <html>
    <head>
    <title>Post: Receiver</title>
    </head>
    <body>
    <table border=”2″ cellpadding=”7″ cellspacing=”2″ >
    <tr>
    <th>Name</th> <th>Address</th>
    </tr>
    <tr>
    <td><% Response.Write(Page.Request.Form[“name2”]); %></td>
    <td><% Response.Write(Page.Request.Form[“addr2”]); %></td>
    </tr>
    </table>
    </body>
    </html>

This is screenshots of post_recv.aspx when I fill name 2 and address 2 with ‘Ali’ and ‘Wirogunan, Yogyakarta’ respectively:

Data sent using POST method received by post_recv.aspx and showed in tabular format.

80 Responses to “Interacting With Get and Post Methods in ASP.NET”

  1. thanks

    it’s totally clear…

  2. julio said

    no funciona

  3. george said

    thanks man,

    best regards!

  4. Kamalesh said

    worthful !!

  5. ketan said

    I Do googling a lot but nt found
    Print Post Variable
    Its Reply HelpFull to me

  6. Anuj said

    Thanks

    crystal clear

  7. Surendra Gurjar said

    The example is very good bcoz it is very easy to understand and work with.

    Thanx Andreas Viklund

    With regards:
    Surendra Gurjar

  8. monkeyman said

    thanks dude u really saved my ass today!!

  9. jay said

    very well explained, cheers

  10. Harshal said

    Excellent, nice post,simple n clear……

  11. Bogdan said

    Finally, I had found the solution.Great Post!

  12. Mirta said

    Excellent, simple and useful.

    Thanks!

  13. Sudipta Dhar said

    thanx manm, answers my question…great

  14. Manish said

    very gud article

  15. Thanks a lot….
    Cleared my all-time doubts.
    Simply because of its simplicity & clarity….

  16. NNdrovec said

    По поводу поста – согласен, щас без простыни текста трудно выбиться в топ, но думаю это актуально не только для морд, но и для внутряка.

  17. Makakas said

    Да нормальный дизайн. Нашли до чего докопаться.

  18. MaRarts said

    Интересно,сколько нужно денег,чтобы понять,что не в них счастье??

  19. Cimpy said

    now do the same with a couple of aspx pages with forms runat=”server”

  20. Arun said

    Simple and Clear. Even a lay-man can understand. Kudos..🙂

  21. Baseer said

    Excellent

  22. Absolutely simple and clean. Many Thanks.

  23. Saurabh said

    I am beginner and it help me lot .
    Thanks ..

  24. Nidhi said

    Hi,
    This is with HTML page. Can we have the same with server controls.Like with value in textboxes. Also how to pass the Querystring parameter from serverside usinh POST.

    Thanks in Advance

    *Regards
    Nidhi Agarwal*
    _________________________________________________
    [G] Computer Consulting
    Wanna be proud of your computer. Let’s do it !!!!!*

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  26. bwk said

    Thank you

  27. Aniket said

    with GET method and querystring its fine but with POST method and FORM its not working.

  28. sagar said

    what is post & get method plz clear the Deferent post & get

  29. Eky said

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  62. crashban said

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  67. […] https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  68. […] https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  69. […] You could try using POST method instead and submit your page to specific URL. Check this example: https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  70. […] https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  71. […] https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  72. […] https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

  73. […] You could try using POST method instead and submit your page to specific URL. Check this example: https://triaslama.wordpress.com/2008/05/01/interacting-with-get-and-post-methods-in-aspnet/ […]

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