Modify Request Querystring Parameters To Build A New Link Without Resorting To String Manipulation

Apr 6, 2010

I want to dynamically populate a link with the URI of the current request, but set one specific query string parameter. All other querystring paramaters (if there are any) should be left untouched. Eg, imagine I want to build a link back to the current page, but with the querystring parameter "valueOfInterest" always set to be "wibble" (I'm doing this from the code-behind of an aspx page, .Net 3.5 in C# FWIW).Eg, a request for either of these two:

/somepage.aspx
/somepage.aspx?valueOfInterest=sausages

would become:

/somepage.aspx?valueOfInterest=wibble

And most importantly (perhaps) a request for:

/somepage.aspx?boring=something
/somepage.aspx?boring=something&valueOfInterest=sausages

would preserve the boring params to become:

/somepage.aspx?boring=something&valueOfInterest=wibble

Caveats: I'd like to avoid string manipulation if there's something more elegant in asp.net that is more robust. However if there isn't something more elegant, so be it. I've done (a little) homework: I found a blog post which suggested copying the request into a local HttpRequest object, but that still has a read-only collection for the querystring params. I've also had a look at using a URI object, but that doesn't seem to have a querystring

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Request.QueryString[] That Contains '+'

Jul 31, 2010

I have a page that I wish to pass an ID in a querystring to another page

eg

Response.Redirect("~/Account/Login.aspx?CertificateID="+ CertificateTextBox.Text);

but the value in the CertificateTextBox is in the format of Encoding.UTF8

so it can contains character like "ZnbiS69F2g22OeupHw+Xlg=="

When the receiving page gets the QueryString

CertificateTextBox.Text = Request.QueryString["CertificateID"];

the "+" and possible other querystring chars like "?" are stripped!!

so I end up with

Request.QueryString["CertificateID"];

returning

"ZnbiS69F2g22OeupHw Xlg=="

the "+" strinpped!

Is there a way to encode these chars so they are not striped by QuesryString()or do I have to use a session variable??

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MVC :: Build A Request Over Several Pages?

Mar 18, 2010

In Web Forms I would tend to do this by having one actual page. I would then use a tab container to give the appearance of several pages of a "wizard" by enabling and disabling tabs. Of course the URL wouldn't change, but otherwise it gave the impression I wanted. The values of the hidden controls were maintained in viewstate, and when the submit button on the last page was pressed I could obtain all the information I needed from the state of the controls.This obviously is not how it should be done with MVC. However, I don't really want session state or to write partially complete submissions to the database. What is the best way of handling this?

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MVC :: ActionLink Return An Url With Parameters In Querystring?

Jan 17, 2010

I try to have an URL like this /Forum/Index/2 for url I have a route {controller}/{action}/{page} in my global.asax

If i test the above url with the Route Debugger it corresponds to the above route ( and some other but this is the fist one in the list ) but if I create an url with the ActionLink

( like this : [Code]....

),
this methode return me this URL /Forum/Index?page=2 Is there a way to a have an url with nothing in querystring with the ActionLink methode ? Gauthier

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URL Rewriting Based On QueryString Parameters

Apr 11, 2010

I wanted to ask about URL rewriting. I want to map this: [URL]
To: [URL] Being DVD players product id 123.

Also I will like to map sub domains like this:
From: [URL]
To: [URL]

Being John Doe user id 123. I will like to do this by getting the respective ID (for products and users) from a database based on product id name (dvdplayers) and sub domain name (johndoe). Where can I intercept these 2 (sub domain string and product name string) and based on this getting the info from DB and "rewrite" the URL's?

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4.0 URL Routing With Two Or Multiple Querystring Parameters

Aug 16, 2010

How can I pass two querysting parameters in URL routing using ASP.NET 4.0? I have gone through many articles, but everywhere it shows only one parameter. I'd like the display URL to be: [URL] The first parameter is ID: 1 The second is Name: This is my first report I am trying following route, but it is not working

routes.MapPageRoute(
"MarketReports", // Route name
"Reports/{*i}-{*n}", // Route URL
"~/pageControl2.aspx" // Web page to handle route
);

How can I make this work as described?

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How To Route Legacy QueryString Parameters In MVC 3

Mar 11, 2011

I am using a third party service that does an async callback to a URL I provide to them. So I tell them to use [URL] This must obviously map to an Incoming() method on my StatusController.

However, what I don't have control over is the format of the parameters they call my URL with. E.g. They will do a callback such as: [URL] I want to map this to the parameters of my action method: Incoming(string param1, string param2, int param3)

How do I do this?

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