Training Trains Internship
Student login
← C# Programming learning path
C# Programming · Module 7 of 10

Exceptions and files

Handle errors and work with files safely.

📖 Key ideas

  1. try { } catch (Exception ex) { } finally { }.
  2. Throw: throw new ArgumentException("Invalid");
  3. Catch specific exceptions first.
  4. using statements dispose resources automatically.
  5. File.ReadAllText and File.WriteAllText for simple file I/O.
💡 Real-life example: try/catch is a safety net under a trapeze artist; finally is sweeping the stage afterwards.
try/catchHandles exceptions
finallyAlways runs
usingDisposes resources automatically
IDisposableInterface for releasing resources