How Can I Handle a 'Potentially Dangerous Request.Path Value' Error Caused by an Asterisk in a URL?

Addressing "Potentially Dangerous Request.Path" Errors with Asterisks

Web applications often encounter the error "A potentially dangerous Request.Path value was detected from the client ()." This signifies a problem with a special character—the asterisk ()—within the request URL. For example:

<code>https://stackoverflow.com/Search/test*/0/1/10/1</code>

Here, the asterisk is part of the search term.

Solution:

The most effective solution involves modifying the web.config file to adjust the requestPathInvalidCharacters setting. Simply remove the asterisk from the list of invalid characters:

<code class="language-xml"><system.web>
  <httpRuntime requestPathInvalidCharacters="<,>%,&amp;,:,\,?" />
</system.web></code>

Alternative Approaches (Less Recommended):

While alternative methods exist, they are generally less efficient and more prone to errors:

• Query Strings: Using query strings is a possibility, but might be less visually appealing.
• Manual Encoding/Decoding: Manually encoding and decoding special characters is feasible, but this approach is cumbersome and increases the risk of mistakes.

Therefore, modifying the web.config file offers the cleanest and most practical solution for handling this specific error.

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