You've seen several scenarios when errors have occurred. C# calls where an exception has been thrown. A good practice is to avoid writing code that will throw an exception whenever possible, but sometimes you can't. In those scenarios, you must catch the exception and handle it.
As you have seen, the default behavior of a console application is to display details about the exception in the output and then stop running the application.
The default behavior of a Windows desktop application is to display details about the exception in a dialog box and allow the user to choose to either continue or stop running the application. You can take control over how to handle exceptions using the try statement.