Explain the differences between ArgumentException and ArgumentNullException.

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Aryan Kumar · Answer

Sure. The main difference between ArgumentException and ArgumentNullException is that ArgumentException is thrown when an argument passed to a method is invalid, while ArgumentNullException is thrown when an argument passed to a method is null.

Here is a table summarizing the key differences between ArgumentException and ArgumentNullException:

Feature	ArgumentException	ArgumentNullException
When is it thrown?	When an argument passed to a method is invalid.	When an argument passed to a method is null.
What is the message?	The message describes the invalid argument.	The message specifies the argument that is null.
Where is it inherited from?	ArgumentException inherits from Exception.	ArgumentNullException inherits from ArgumentException.

Here are some examples of ArgumentException:

Passing a string to a method that expects an integer.
Passing a negative number to a method that expects a positive number.
Passing a null string to a method that expects a non-null string.

Here are some examples of ArgumentNullException:

Passing null to a method that expects an integer.
Passing null to a method that expects a string.
Passing null to a method that expects an array.

It is important to use the correct exception type when handling errors. If you use ArgumentException when you should have used ArgumentNullException, the error message will not be very helpful.

In general, you should use ArgumentNullException when an argument is passed to a method and it is null. You should use ArgumentException when an argument is passed to a method and it is invalid, but not null.

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Explain the differences between ArgumentException and ArgumentNullException.

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