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Aug 28th, 2009

QueryString

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Hello everyone,
Could someone please give me a good explanation about what I can do with it? I can't really find it on Google..
Thanks in advance,
Davey

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daveyb91

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Aug 28th, 2009

Re: QueryString

I use querystring to retrieve parameters send from another form, let's say that you are and index.html and there is a link url to default.aspx like this
~/Default.aspx?var=hello

then and the Server code from Default.aspx to retrieve that value i have this.

ASP.NET Syntax (Toggle Plain Text)
string stTest = Request.QueryString["var"];
string stTest = Request.QueryString["var"];

now stTest is equal to "hello"
hope that help you

jbisono

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Aug 28th, 2009

Re: QueryString

Its handy if you want to pass data to other pages, especially when you want it retained in the browser's history. If you POST search terms to google for example then you wouldn't have a list of all searches you performed in your browser history.

sknake

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Aug 28th, 2009

Re: QueryString

It comes from the days of ASP.

The "Request.QueryString" command is used to collect values in a form with method="get".

SimpleForm_1.asp

ASP.NET Syntax (Toggle Plain Text)
<form method="get" action="SimpleFormHandler_1.asp">
    <TEXTAREA NAME="location" COLS=33 ROWS=4></TEXTAREA>
    <input type='submit' value='Add Event'>
</form>
<form method="get" action="SimpleFormHandler_1.asp">
    <TEXTAREA NAME="location" COLS=33 ROWS=4></TEXTAREA>
    <input type='submit' value='Add Event'>
</form>

SimpleFormHandler_1.asp

ASP.NET Syntax (Toggle Plain Text)
<%@ Language=VBScript %>
 
<%
        Dim userLocation
 
        'location is the variable name as defined by "NAME="
        'in SimpleForm_1.asp
        userLocation = Request.QueryString("location")
%>
<%@ Language=VBScript %>

<%
        Dim userLocation

        'location is the variable name as defined by "NAME="
        'in SimpleForm_1.asp
        userLocation = Request.QueryString("location")
%>

The "Request.Form" command is used to collect values in a form with method="post".

SimpleForm_2.asp

ASP.NET Syntax (Toggle Plain Text)
<form method="post" action="SimpleFormHandler_2.asp">
    <TEXTAREA NAME="location" COLS=33 ROWS=4></TEXTAREA>
    <input type='submit' value='Add Event'>
</form>
<form method="post" action="SimpleFormHandler_2.asp">
    <TEXTAREA NAME="location" COLS=33 ROWS=4></TEXTAREA>
    <input type='submit' value='Add Event'>
</form>

SimpleFormHandler_2.asp

ASP.NET Syntax (Toggle Plain Text)
<%@ Language=VBScript %>
 
<%
        Dim userLocation
 
        'location is the variable name as defined by "NAME="
        'in SimpleForm_2.asp
        userLocation = Request.form("location")
%>
<%@ Language=VBScript %>

<%
        Dim userLocation

        'location is the variable name as defined by "NAME="
        'in SimpleForm_2.asp
        userLocation = Request.form("location")
%>

See http://www.w3schools.com/ASP/asp_inputforms.asp

Last edited by cgeier; Aug 28th, 2009 at 6:57 pm.

cgeier

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Aug 28th, 2009

Re: QueryString

You'll probably find more info on it if you search for "ASP Request.QueryString" and "ASP Request.Form".

C#

ASP.NET Syntax (Toggle Plain Text)
string userLocation;
userLocation = Request.QueryString["location"];
string userLocation;
userLocation = Request.QueryString["location"];

ASP.NET Syntax (Toggle Plain Text)
string userLocation;
userLocation = Request.Form["location"];
string userLocation;
userLocation = Request.Form["location"];

cgeier

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Aug 28th, 2009

Re: QueryString

this thread must be moved to ASP.NET forum.

serkan sendur

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Aug 29th, 2009

Re: QueryString

Ok, I will flag this thread then.
Ok, so I read all of your comments, and thanks for it

I'm gonna ask another question about this.

I need to get the id=123 in http://www.website.com/something.php?id=123, in my C# application. Whenever I press a new button on the website the C# app needs to get the new id, or
value etc etc. So would this then be the best solution to get it? Or could I better use something else..?

Thanks again,
Davey

daveyb91

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Aug 29th, 2009

Re: QueryString

And, I can't find the flag button

daveyb91

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Aug 29th, 2009

Re: QueryString

I flagged it for you. The button should be located under the reply:

Quote ...

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Re: QueryString #9 1 Minute Ago | Add to sknake's Reputation | Flag Bad Post

Last edited by sknake; Aug 29th, 2009 at 10:38 am.

sknake

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Aug 29th, 2009

Re: QueryString

Oh yes, thanks haha.
How could I miss that?

daveyb91

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