Mastering Exception Handling in .NET

Knowing these is crucial, especially for interviews.

Handling exceptions is key in making software that’s strong and stable. It’s about dealing with problems that pop up while a program runs, which could mess up the usual flow.

Photo by Arnold Francisca on Unsplash

Exception Handling in .NET In .NET, especially C#, we use four main keywords for handling exceptions:

• try: Marks the code that might have issues. If trouble arises here, the program jumps to a catch block.
• catch: Follows try and deals with the problems. You can set up several catch blocks for different issues.
• finally: Runs code no matter what—whether there's an error or not. Great for cleaning up, like closing files.
• throw: Lets you signal that something went wrong by causing an exception.

Now, let’s look at some dos and don’ts.

1 — Use Specific Exception Types:

Don’t catch every type of exception in one block. It’s vague and not helpful for solving or logging issues.

Bad:

try
{
    // Risky code here
}
catch (Exception ex)
{
    Console.WriteLine("An error occurred: " + ex.Message);
}