How to Add a Comment Event in Visual Basic

Start a comment with a single quote mark. This tells the computer to ignore everything on the line after the quote mark. For example:

' This is how to write a comment in Visual Basic

' Comments can be more than one line

' Each comment must start with a single quote mark

Start the comment line with "REM," which indicates a remark. This is an older way to add comments to Visual Basic code. For example:

REM This is how to write a comment in Visual Basic

REM Comments can be more than one line

REM Each comment must start with the word REM

Comments can appear anywhere in your code, even at the end of an executable line. You must put a colon before the REM if it does not appear at the start of the line, but a colon is not required before a single quote. Here are two examples, the first using a single quote and the second using the REM statement:

' Create a message box that says Hello, World!

Sub Main()

MsgBox("Hello, World!") ' Comments can appear anywhere in code

End Sub

REM Create a message box that says Hello, World!

Sub Main()

MsgBox("Hello, World!") : REM Comments can appear anywhere in code

End Sub