How to Extract URL Parameters from a String in .NET?

Efficiently Parsing URL Parameters from Strings in .NET

Problem:

Given a URL string in a .NET application, how can you easily extract the value of a specific parameter without relying on the Request.Params property?

Solution:

The most straightforward approach is using the System.Web.HttpUtility.ParseQueryString method. This static method parses the query string portion of a URL and returns a NameValueCollection, allowing easy access to parameter values. Here's how:

Uri myUri = new Uri("http://www.example.com?param1=good&param2=bad");
string param1Value = HttpUtility.ParseQueryString(myUri.Query).Get("param1"); 

This code snippet first creates a Uri object from the URL string. Then, it uses ParseQueryString on the Query property of the Uri (which contains the parameters) to get a NameValueCollection. Finally, the Get("param1") method retrieves the value associated with the "param1" parameter.

For comprehensive details and further examples, consult the official Microsoft documentation: https://www.php.cn/link/29a83a8a9641bb860a679d7e5ba52d26 (Note: This link may be outdated; search for "HttpUtility.ParseQueryString" on the current Microsoft documentation site for the most up-to-date information).

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