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Uri.Fragment Property in C#

In web development, Uniform Resource Identifiers (URIs) are essential because they act as addresses for locating and identifying resources on the internet. Uri.Fragment property is one of the many Uri class tools offered for working with URIs.

Knowing About URIs and Fragments:

Let's quickly review what URIs and fragments are before getting into the details of the URI.Fragment field. A unique resources identifier (URI) is used to identify a specific resource, usually on the World Wide Web. URIs are composed of various elements, such as the host, query, fragment, scheme, and path.

The fragment, frequently indicated by the '#' sign, stands for a particular portion of a resource that the URI identifies. It is a browser or application that receives a URI containing a fragment, navigates to the given resource, scrolls to, or focuses on the designated fragment within it.

Overview of the Uri.Fragment Property:

One useful property for working with fragments in C# is the Uri, provided by the Uri class characteristic of fragments. Developers can set or retrieve a URI's fragment part using this property.


Let's examine the Uri's syntax in more detail. Property of fragmentation:


Let us take a C# program that shows how to use the Uri.Property of fragmentation:


Uri.Fragment Property in C#


The program is explained as follows,

  • This C# program illustrates the use of the Uri.Fragment property for working with Uniform Resource Identifiers (URIs).
  • In the first example, the fragment representing a web page with a particular portion (#section1) is extracted from a URI.
  • The second example shows how to use the UriBuilder class to change the fragment of a URI from #section1 to #section2.
  • The third example, which returns a boolean answer (yes or false), lastly determines whether a URI contains a fragment.
  • Overall, the program provides insights into URI manipulation in C# for web development and shows how developers can get, change, and search for fragments within URIs.

Useful Applications:

There are several applications of the Uri.Fragment property in C#. Some main applications of the Uri.Fragment property are as follows:

Extracting the Fragment:

The Uri.Fragment property is very useful when attempting to extract the fragment from a given URI. This function is important when using predetermined links or user input to navigate via web resources.

Changing the Fragment:

Developers can quickly alter a URI fragment by using the UriBuilder class in conjunction with the Uri.Fragment property. This feature is very helpful when a web application's navigation links need to be updated dynamically.

Detecting the Presence of Fragments:

It is made easier to determine whether a URI contains a fragment by using the Uri.Fragment property. It is helpful for apps that employ conditional logic to make sure that specific actions are taken only in the presence of a fragment.

Advanced Application:

Modification of Conditional Fragments:

Developers can use conditional statements to dynamically determine the fragment value according to predetermined standards. It guarantees that the application logic can handle various scenarios with flexibility.

Comparing UriBuilder and Concatenation:

Although UriBuilder is the preferred method for altering URIs, developers should use string concatenation with caution. By guaranteeing correct encoding and producing well-formed URIs, UriBuilder reduces the possibility of problems with human concatenation.

Best Practices:

There are several best practices of the Uri.Fragment property in C#. Some main best practices of the Uri.Fragment in C# are as follows:

Validating URIs:

It's best to use the URI to verify the format of URIs before working with them. It prevents runtime exceptions brought on by URIs that are not properly constructed.

Managing Correlated URLs:

Both absolute and relative URIs are handled with ease via the URI.Fragment attribute. Developers should be aware of the base URI when working with relative URIs to correctly understand or alter fragments.

Challenges and Considerations:

Coding and Decoding:

When working with URIs, developers need to be aware of encoding and decoding difficulties, particularly when handling reserved characters. While the Uri class handles encoding during instance creation, encoding details must be paid attention to when manually creating URIs.

Partition Safety:

Relying on client-side fragment values for actions that are security-sensitive requires caution. Utilizing fragments for permission or authentication can be risky from a security standpoint because they are frequently accessible on the client side. Security checks and server-side validation are advised for this function.


In conclusion, the C# Uri. Fragment property is an essential tool for web developers to navigate and work with URIs. By comprehending its importance, investigating useful applications, and implementing best practices, developers can efficiently leverage its strengths while resolving potential issues. The Uri.Fragment property enables developers to optimize the user experience and simplify URI manipulation in C# projects, whether retrieving, editing, or verifying URIs.

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