Can I use a format string in a URL to navigate to web page, replacing the specified portion of the URL?

query-string
urlsearchparams
query-string js
url encode
add query parameter to url
how to pass parameter in url in javascript
how to redirect a url to another url in html
get url parameters javascript

I'm interested in creating some sort of simple C# application takes a user string and passes it into a target portion of the URL. For example, since user query is visible in the page URL DuckDuckGo

Example: https://duckduckgo.com/?q=web+browsers&ia=web

In this case, the URL shows that I searched for "web browsers". I would like the user to be able to pass any string to the application (via some kind of prompt that appears with the application is launched), and then launch a web browser and navigate to the target URL with the user input inserted into URL where the query is specified. (i.e., https://duckduckgo.com/?q=operating+systems&ia=web), where the user entered the string "operating systems".

So I would like to know which type of C# application to use that can interact with OS (Windows 10) and how to write the code for the the format String and the user prompt. Any guidance would be appreciated.

Your question is very broad so the best that can be done is give a broad answer. You mention "application" and "interact with the OS", so I'm assuming a native application, not a web app. A quick way to pull this off would be to Google for "C# Web Browser Example"; there are plenty of applications out there with well-explained source code that will answer your question:

So I would like to know which type of C# application to use that can interact with OS (Windows 10)

As for the string replacement, Armine already pointed that out in his previous post. A simple textbox on your form, passed to some parsing code with string replacement, will do the trick for building the URL. The resulting URL is then passed to the web browser control you've used in your C# application; the URL will be one of the properties of the control.

Query string, On the World Wide Web, a query string is the part of a uniform resource locator (​URL) which assigns values to specified parameters. The query string commonly  This means that it is possible to update parts of a web page, without reloading the whole page. I think it's of little use to give here a tutorial on AJAX but you can read w3school's AJAX tutorial . If you understand the basics I'd suggest to use jQuery, a javascript library, which is simpler than pure javascript.

The idea is to take what user typed as a string, and then create another string which will contain the words of that string, separated by the plus character (+)

String what_user_typed=" javascript jquery";
String query=what_user_typed.Replace(" ","+"); // A space represents a new word
String url="https://www.google.com/search?query="+query

After creating the url you can then use a webbrowser to open that url

Easy URL Manipulation with URLSearchParams | Web, URLSearchParams trivial access and manipulation of the URL's query string. Inside look at modern web browser (part 4) · Inside look at modern web use regexs and string splitting to pull out query parameters from the URL. If we're Given a URL string, you can easily extract parameter values: Was this page helpful? Is there a way to transparently pass URL parameters through web pages? I mean situation that when using redirects, already added parameters will be passed to new page without direct action of programmer. For example: we entering page myPage1.aspx?param1=test ; performing Response.Redirect(myPage2.aspx)

I have not executed this but think this is what the logic should be.

string input = "operating system";
string destinationURL = $"https://duckduckgo.com/?q={input}&ia=web";
string formattedURL = HttpContext.Current.Server.UrlEncode(destinationURL);
System.Diagnostics.Process.Start(formattedURL);

HttpUtility.UrlEncode Method (System.Web), These method overloads can be used to encode the entire URL, including query-​string values. Encodes a URL string using the specified encoding object. The previous examples demonstrate the logic and technique behind writing valid URL query string parameters, but there are easier, more efficient ways to produce valid, dynamic links. First of all, rather than manually replacing each and every special character with its encoded equivalent, we can use the magical powers of PHP’s urlencode

Uri Class (System), The Uri constructors do not escape URI strings if the string is a well-formed URI including a scheme Using IRIs allows a URL to contain Unicode characters. Specify a Universal Resource Locator (URL) to a network location in the Default Value field of the Attribute property page. The URL can be a constant or a value returned from another item attribute. Note: If you define a URL attribute that points to an Oracle Applications Framework-based Web page, that page must use the self-secured security

How to Redirect a Web Page, portion of the URL, or even redirect users to another website entirely (just to name a few). along with all the other posts that use that same URL format. Also it  The easiest way to create a URL object is from a String that represents the human-readable form of the URL address. This is typically the form that another person will use for a URL. In your Java program, you can use a String containing this text to create a URL object:

URL Conventions (OData Version 3.0) · OData, The [OData:Atom] and [OData:JSON] documents specify the format of the resource A URL used by an OData service has at most three significant parts: the to follow the URL path construction rules (in addition to the required query string rules) as Much like the use of links on Web pages, the data model used by OData  PathEscape escapes the string so it can be safely placed inside a URL path segment, replacing special characters (including /) with %XX sequences as needed. func PathUnescape ¶ 1.8 func PathUnescape(s string) (string, error)