How do I use try-catch-finally in C#?

How do I use try-catch-finally in C#?

In C#, the try-catch-finally construct is used for exception handling. You place the code that might throw an exception in the try block, catch the exception in the catch block, and use the finally block for cleanup code that runs regardless of whether an exception occurred.

Can you give me a code example?

Sure! Here's a simple example:

try {
    int[] numbers = {1, 2, 3};
    Console.WriteLine(numbers[5]); // This will throw an exception
} catch (IndexOutOfRangeException e) {
    Console.WriteLine("Caught an exception: " + e.Message);
} finally {
    Console.WriteLine("This will always execute.");
}

What happens if I don't use finally?

If you don't use the finally block, any cleanup code you need to run after the try-catch will not execute if an exception occurs. The finally block ensures that certain code runs regardless of whether an exception was thrown.

Can I have multiple catch blocks?

Yes, you can have multiple catch blocks to handle different types of exceptions separately. Just make sure to order them from most specific to least specific.