Difference between system level exceptions and application level exceptions.

As we all know, exceptions refer to interruptions in the flow of a program or application. Such unwanted events are called exceptions and usually indicate an error in the code. Basically, especially in C# language, exceptions can be system level exceptions or application level exceptions. So on this basis

Application level exception

#Sr. No.	Key	System level exception
1	Derived	System exceptions are derived from the base class System.SystemException, which is itself a derived class	On the other hand, application-level exceptions are derived from the base class System.ApplicationException, which is itself a derived class. Derived class
2	Occurrence	Generally, whenever a system exception occurs and some unrecoverable or fatal error is encountered, such as a database crash , binding errors, etc.	In the case of application-level exceptions, you will encounter some recoverable errors, such as input data type errors, arithmetic exceptions, etc.
3	Handling	Because errors in system-level exception cases are fatal, there is no such type of exception handling or method of preventing exceptions.	On the other hand, since application-level exceptions are usually handled at the code level using try-catch blocks. If the code does not throw an exception in the try and catch block, then it propagates to the page level where the Page_Error routine can be used to handle the exception
4	Custom	When a system-level exception occurs, exception customization is not supported.	On the other hand, we can define and declare custom application level exceptions.
5	Generate	As mentioned above, system-level exceptions are thrown by the .NET common language runtime and are used in almost all .Net applications used in the program.	On the other hand, when a recoverable error occurs, such as a business method with an invalid input parameter value, an application-level exception is thrown. It will raise application-specific alerts or business logic issues to clients.

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