.Net webapi - when your request model is null - trouble shooting guide



lets say your have this as your Controller method, accepting POST request



When dealing with large request object, you can never be sure where you might have issue.

In this case, I have an issue converting an empty string to int. Yes, it is very important to have Request model to have int? as the default binding variables.

But anyways, working as a team you will never know what really happens. The request always null.





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The specified initialization vector (IV) does not match the block size for this algorithm

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If you're getting  exception when trying to assigned key to a symmetric key and getting error message below :- The specified initialization vector (IV) does not match the block size for this algorithm And your code probably look like something below :- Then you need to go into debug mode and start looking into the supported size for IV as shown in diagram below :- As you can see, IV is 16 bytes, so you need to provide 16 bytes. The same goes for Key field too, if you're adding anything to it. As long as you provide a valid key size, then we're good and you're code will be ready.
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