Can you explain try-catch in C# with examples?

Can you explain try-catch in C# with examples?

Sure! In C#, the try-catch block is used to handle exceptions. Here's a simple example:

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

What happens if an exception is not caught?

If an exception is not caught, it will propagate up the call stack, potentially crashing the application if it reaches the top without being handled.

Can I have multiple catch blocks?

Yes, you can have multiple catch blocks to handle different types of exceptions separately. For example:

try {
    // some code
}
catch (FormatException ex) {
    // handle format exception
}
catch (DivideByZeroException ex) {
    // handle divide by zero exception
}
catch (Exception ex) {
    // handle any other exception
}

Is there a finally block in C#?

Yes, a finally block can be used after the catch blocks. It will execute regardless of whether an exception was thrown or caught. Here's an example:

try {
    // some code
}
catch (Exception ex) {
    // handle exception
}
finally {
    Console.WriteLine("This will always execute.");
}