Programming Basics: Structs and Enums

A custom data type used to group related variables together, like the x and y coordinates of a rectangle.

Structs and classes share similar syntax, but structs are more limited and can be instantiated without new.

Structs can contain methods, properties, indexers, and so on.

Structs cannot have default constructors (without parameters), but can have constructors that take parameters.

A set of named constants that represent values, like days of the week or status codes.

Enums work similarly to arrays, with numbered elements, but they store constant values.

Enum values can be accessed using the dot syntax, like DayOfWeek.Monday.

Enums are useful for assigning values that are clear and readable, like Status.Pending instead of just 1.

The File class is used for various file operations in C#, such as reading, writing and manipulating files.

The WriteAllText() method creates a file at the specified path and writes the given text into it. If the file exists, it is overwritten.

The ReadAllText() method reads the entire content of a file and returns it as a string.

The AppendAllText() method adds text to the end of an existing file.

The Create() method creates a new file at a specified location. If the file already exists, it will be overwritten.

The Delete() method removes a file from its location.

The Exists() method checks if a file exists at the specified location.

The Copy() method creates a copy of a file from one location to another.

The Move() method relocates a file from one location to another.

Unexpected events that occur during program execution, such as errors, data loss, or unavailability of resources.

The process of incorporating code into a program to gracefully handle exceptions and prevent program crashes.

A code block that encloses code that might cause exceptions. If an exception occurs within this block, it is caught and handled.

A code block that executes if a specific exception is caught in the preceding try block. It contains code to handle the error and allow the program to continue running.

A special data type used in catch blocks to access details about the captured exception. This includes error messages and other information.

A code block that is always executed after the try and catch blocks, regardless of whether an exception occurred or not. It is often used for cleanup tasks like closing files or releasing resources.

A type of exception that occurs when a requested file cannot be found.

An exception that arises when data formats are incompatible or incorrect, causing issues in parsing or processing.