Define A Function In Vba

Follow the below steps to create a User-defined Function in Excel VBA Step 1 Open an excel file, To create user-defined function quotcountVowelquot function. Step 2 Press Alt F11 - to open Visual Basic Editor. Step 3 Click Insert gtgt Module - which will add a new module as in Img1.

ByRef is the default in VBA unlike in Visual Basic .NET. ParamArray Optional. Used only as the last argument in arglist to indicate that the final argument is an Optional array of Variant elements. You can't define a Function procedure inside another Function, Sub, or Property procedure.

Before we use a function, we need to define that particular function. The most common way to define a function in VBA is by using the Function keyword, followed by a unique function name and it may or may not carry a list of parameters and a statement with End Function keyword, which indicates the end of the function. Following is the basic syntax.

User Defined Functions UDFs are custom functions created by the user to perform specific calculations or tasks that are not available in Excel's built-in functions. In VBA, a function is declared with the Function keyword and typically specifies a return data type. Functions can be called from other procedures, spreadsheets, or other functions.

There's only a limited number of functions built in Excel. Often, there will be times when Excel hasn't got the function required to do the job. In Excel VBA, there's the ability to write custom functions. These are known as User Defined Functions UDFs. There are endless Excel user-defined function examples.

A function CalculateNum_Difference is defined using the Function statement and two variables Number1 and Number2 are declared as Integerd. A Sub procedure is used to call the function- Number_Difference. The arguments of the functions Number1 and Number2 are declared as Integers. Num_Diff is declared as Double.

Syntax to Define a Function. The syntax to write a function is as follows-Function ltfunction_namegt ltparam1gt as ltdata_type1gt.. AsltFunction_return_data_Typegt 'function code End Function. The following points explain the syntax to define a function. We use the Function and End Function keywords to depict the beginning and end of the function.

It can be a built-in or user-defined data type. Code This is where you write the instructions for your function, such as loops, conditional statements, or calculations. Result This is the value that the function will return to the worksheet. Examples of Using the Function Statement in VBA VBA Function to Calculating Sales Commission

VBA functions can also be called from inside Excel, just like Excel's built-in Excel functions. Creating a Function without Arguments. To create a function you need to define the function by giving the function a name. The function can then be defined as a data type indicating the type of data you want the function to return.

Using User Defined Functions in VBA Procedures and Functions. When you have created a function, you can use it in other sub-procedures as well. If the function is Public, it can be used in any procedure in the same or different module. If it's Private, it can only be used in the same module.