How to Create Custom Functions in Visual Basic | UDF User Defined Functions

Today, we all want to be better and better at what we love and to put our personal touch to what we do. And this is no exception when using Excel because since it's a platform with too many tools to use, we want to get the most out of it by customizing it.

This is why Visual Basic custom functions such as the creation of personal macro code with quick access and l' using UDF user-defined functions quickly and easily, so you can perform whatever operations you want, without limits.

What Are Custom Functions in Visual Basic?

These personalized functions called "User Defined Functions", or for its acronym in English UDF (User Defined Functions), are those which allow the use of VBA functions, properties and methods , which help some custom aspects of Excel.

The more than 300 functions that this modality allows to use are really useful to customize our Excel to our liking, making it unique and different others.

Since Office developers cannot completely predict all the operations that users will need to perform, Visual Basic's custom functions allow us to add the math operations we need to our Excel.

How to create custom functions in Visual Basic user-defined UDF?

Surely you are wondering how to take advantage of all these useful functions in your Excel, well, here we show you how.

The steps to achieve this are not at all complicated, as some people think. In fact, they are really simple .

All you need to do to create UDF user-defined custom functions in Visual Basic is:

• First, you need to define the operation you want to perform with these custom functions.
• Navigate to the form or table where you want to define the already scheduled operation.
• Once there, press Alt + F11 to see the editor Visual Basic .
• Among the options that will be presented to you, click on "Insert" then on "Module".
• You will see a new module window appear on the right side of the already mentioned editor, the Visual Basic one.
• Finally, we will only have use the function as Excel code , and the operation you want to perform in the module you just created can start to do its job.

That's all! Once you have followed all of the simple steps above, you will be able to use the special function you want so much.

Some things to keep in mind are that if you have a Mac, you will need to press End + Alt + F11, instead of just Alt + F11.

You should also remember that if you have the 2007 version of Excel, the maximum capacity of characters to type in these modules is 255. And if you have a version from previous years, it is only 30 characters.

Likewise, if you need more help, we recommend that you visit the Help for Office section on Microsoft's official website and thus make the most of the options offered by Excel.

What rules should you follow when creating custom functions in Visual Basic?

Por cada nueva function que se pone a nuestra disposición en estos días, hay una cierta cantidad de reglas que hay que seguir para use adequate manera .Y in Excel esta ley no se olvida, ya que, al crear funciones personalizadas, debemos seguir ciertas Rules.

For example, you should remember that custom functions should always start with a "Function" statement and end with a "Function" statement. "In Function" instruction . In addition, you should always place an instruction somewhere that gives a value to a variable with the same name as the function.

Something that can help you improve the organization of your Excel rows is to know how to create and apply custom table style in Excel , to that they adapt to your needs .