How to Handle URL-Encoded Slashes in URL Routing?

Working with URL-Encoded Slashes in URLs

In URL routing, it's sometimes necessary to handle parameters that contain slashes. However, URL encoding typically replaces slashes with the '/' sequence, which can break route matching.

Problem:

When using a route like {controller}/{action}/{id}, URLs with URL-encoded slashes (e.g., "Home/About/100/200") fail to match the route.

Solution 1: Custom URL Encoding/Decoding

A custom URL encoding/decoding solution can be implemented, such as the one provided in the code snippet below. This approach encodes the parameter value using Base64 and appends a prefix to indicate that encoding was used.

Solution 2: Wildcard Parameter

If the problematic parameter is always the last one, you can use a wildcard parameter {*id} in the route definition. This allows multiple segments in the parameter, including slashes.

Other Considerations:

• Space characters ( ) should also be properly URL-encoded.
• Base64 encoding may make URLs visually unappealing.
• An alternative approach is to store a pre-formatted string for each item and use a separate "URL" column in the database. This avoids the need for decoding and ensures data consistency.

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