I've been using querystring to pass values between pages, and noticed they can be retrieved by either Request.Params[varName], or Request.Querystring[varName]. Is there a difference, and is either more efficient?

Hi There:
To pass values between pages, we have 2 method!! Request.Querystring[varName] & Request.Form[varName]
Dear friend Request.Params[varName] is something else!!!
So to pass values between pages u have 2 ways as I said, but what are the different between them is a story:
we have 2 kind of methods in <form> tag of HTML.
[u]"post"</u> : Will pass the values hidden from user & within pages, u'll use Request.Form[varName]
[u]"get" </u> : in this case u can see the values in the end of ur page address.u'll use Request.Querystring[varName]
u cant use "get" method in login pages but is usefull in links

Anyway I have no URL to give u but can check it in internet there is a lot of help! look for HTML help.
I hope I could help u.

Always:),
Hovik Melkomian.

To clarify, I'm not actually using a form submit to send pages, I'm using the Response.Redirect command in my C# code-behind file. Once the page is redirected, I fetch the querystring params with the Request.Params[varName] command, and it seems to work just fine. Thanks.

Hi there,

I think Hovik doesn't know this is an ASP.NET forum, as his answer seems quite classic ASP related.

Anyway, here's what the MSDN says about both collections:

QueryString
Gets the collection of HTTP query string variables.

Params
Gets a combined collection of QueryString, Form, ServerVariables, and Cookies items.

Unfortunately, it doesn't provide any detail about the order the collections are searched, nor is it clear to me whether you can change that order (like in PHP).

Personally, I don't think there is much of a performance difference. However, I prefer to be explicit. So if you know you want to retrieve your values from the QueryString, use Request.QueryString. It makes things much easier to understand and debug.

Cheers,

Imar


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Imar Spaanjaars
Everyone is unique, except for me.