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How to comment in c# shortcut Use Them and Why?

To explain C# code and make it even more readable, comments can be used . It is also used to prevent execution when testing alternative code.

Single- line Comments

  •  It starts with two forward slashes(//).
  •  Any text between // and end of line is not executed by C#.
Example
// This is a single line comment
Console.WriteLine(“Hello World!");

C# Multi-line Comments

  •  It starts with /* and ends with */.
  • Text between /* and */ will be ignored by C#.
Example
/*The code which is underneath , will print the text Hello World
     at the screen, and this is really amazing and outstanding */
Console.WriteLine(“Hello World!”);


 Shortcut Use Them and Why?

In Visual Studio, you can quickly add or remove comments to your code using keyboard shortcuts. Here are the most commonly used shortcuts:

  • To add a single-line comment: Select the lines you want to comment and press Ctrl + K followed by Ctrl + C.
  • To remove a single-line comment: Select the lines you want to uncomment and press Ctrl + K followed by Ctrl + U.
  • To add a multi-line comment: Select the lines you want to comment and press Ctrl + K followed by Ctrl + M.
  • To remove a multi-line comment: Select the lines you want to uncomment and press Ctrl + K followed by Ctrl + M again.

Using keyboard shortcuts to add or remove comments is faster and more convenient than manually typing the comment syntax. It also helps to maintain consistency in your code and makes it easier to read and understand.

For example, you can use comments to temporarily disable a portion of code during debugging or testing, without removing it from the source file. When you are done, you can simply uncomment the code and it will be restored to its original state.


How to comment multiple lines in c#

In C#, you can add a comment to multiple lines of code using a multi-line comment. A multi-line comment starts with /* and ends with */.

Here's an example:



C#
/*
This is a multi-line comment.
It can span multiple lines.
*/
or 
 //
        // Summary:
        // Enables processing of the result of an action method by a custom type that inherits
        // from the System.Web.Mvc.ActionResult class.
        //
        // Parameters:
        // context:
        // The context in which the result is executed. The context information includes
        // the controller, HTTP content, request context, and route data.


javascript
/* This is a multi-line comment. It can span multiple lines. */

You can use a multi-line comment to describe a complex block of code, to provide context or information about a section of code, or to temporarily disable a portion of code without removing it.

For example:

java
/* This code checks if the user is eligible for a discount. The conditions for eligibility are: - The user is over 65 years old - The user is a student */ bool eligible = (age > 65 || isStudent);


C# comment block

In C#, you can use a multi-line comment to comment a block of code. A multi-line comment starts with /* and ends with */.

Here's an example:

javascript
/* This is a code block that will be commented out. It can span multiple lines and include any type of code. */

By commenting out a block of code, you can temporarily disable it without removing it from your source file. This is useful for debugging or testing purposes, or to preserve code that you may need to reuse later.

For example:

python
/* bool eligible = (age > 65 || isStudent); double discount = 0; if (eligible) { discount = 0.1; } */


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