C# comments are ignored by the compiler, meaning they do not affect how the program executes. Their purpose is purely for the benefit of developers and are essential for writing readable, maintainable, and understandable code. There are three types of comments in C#
1. Single-Line Comments
A single-line comment starts with two forward slashes //.
Everything after the // on that line is considered a comment and will be ignored by the compiler.
These comments are typically used for brief explanations or notes.
Example:
// This is a simple comment explaining the next line of code
string name = 'John'; // This assigns the value John to variable 'name'
2. Multi-Line Comments
It is mainly use for multiple line comments.
1. Multi-line comments begin with /* and end with */.
2. Everything between the /* and */ is considered a comment, even if it spans multiple lines.
3. These comments are used when you need to explain a larger section of code or temporarily disable a block of code during debugging or development.
Example:
/*
This is a multi-line comment.
It can span across multiple lines.
*/
Console.WriteLine("Multi-line comments are useful for large blocks of text.");
3. XML Documentation Comments
1. XML documentation comments are a special form of comment in C#.
2. They are used to document the purpose of classes, methods, properties, and other members of your program.
3. These comments use XML tags like <summary>, <param>, <returns>, and others to describe the function and parameters in a structured format.4. XML documentation comments are parsed by tools like Visual Studio, which can generate external documentation or show the documentation as tooltips when you hover over the code in the editor.
Example:
///
/// This method Addition two integers and returns the result.
///
/// The first integer to add.
/// The second integer to add.
/// Returns the result of a and b.
public int Add(int a, int b)
{
return a + b;
}