Как писать формулы в excel vba

Итог: ознакомьтесь с 3 советами по написанию и созданию формул в макросах VBA с помощью этой статьи и видео.

Уровень мастерства: Средний

Автоматизировать написание формул

Написание формул может быть одной из самых трудоемких частей
вашей еженедельной или ежемесячной задачи Excel. Если вы работаете над
автоматизацией этого процесса с помощью макроса, вы можете попросить VBA
написать формулу и ввести ее в ячейки.

Поначалу написание формул в VBA может быть немного сложнее,
поэтому вот три совета, которые помогут сэкономить время и упростить процесс.

Совет № 1: Свойство Formula

Свойство Formula является членом объекта Range в VBA. Мы можем использовать его для установки / создания формулы для отдельной ячейки или диапазона ячеек.

Есть несколько требований к значению формулы, которые мы устанавливаем с помощью свойства Formula:

1. Формула представляет собой строку текста, заключенную в кавычки. Значение формулы должно начинаться и заканчиваться кавычками.
2. Строка формулы должна начинаться со знака равенства = после первой кавычки.

Вот простой пример формулы в макросе.

Sub Formula_Property()

  ' Формула представляет собой строку текста, заключенную в кавычки
  ' Начинается со знака =
  Range("B10").Formula = "=SUM(B4:B9)"

End Sub

Свойство Formula также можно использовать для чтения существующей формулы в ячейке.

Совет № 2: Используйте Macro Recorder

Если ваши формулы более сложные или содержат специальные
символы, их будет сложнее написать в VBA. К счастью, мы можем использовать
рекордер макросов, чтобы создать код для нас.

Вот шаги по созданию кода свойства формулы с помощью средства записи макросов.

1. Включите средство записи макросов (вкладка «Разработчик»> «Запись макроса»)
2. Введите формулу или отредактируйте существующую формулу.
3. Нажмите Enter, чтобы ввести формулу.
4. Код создается в макросе.

Если ваша формула содержит кавычки или символы амперсанда, макрос записи будет учитывать это. Он создает все подстроки и правильно упаковывает все в кавычки. Вот пример.

Sub Macro10()
' Используйте средство записи макросов для создания кода для сложных формул с
' специальны символы и относительные ссылки

  ActiveCell.FormulaR1C1 = "=""Total Sales: "" & TEXT(R[-5]C,""$#,###"")"
    
End Sub

Совет № 3: Нотация формулы стиля R1C1

Если вы используете средство записи макросов для формул, вы
заметите, что он создает код со свойством FormulaR1C1.

Нотация стиля R1C1 позволяет нам создавать как относительные (A1), абсолютные ($A$1), так и смешанные ($A1, A$1) ссылки в нашем макрокоде.

R1C1 обозначает строки и столбцы.

Относительные ссылки

Для относительных ссылок мы указываем количество строк и
столбцов, которые мы хотим сместить от ячейки, в которой находится формула.
Количество строк и столбцов указывается в квадратных скобках.

Следующее создаст ссылку на ячейку, которая на 3 строки выше
и на 2 строки справа от ячейки, содержащей формулу.

Отрицательные числа идут вверх по строкам и столбцам слева.

Положительные числа идут вниз по строкам и столбцам справа.

Абсолютные ссылки

Мы также можем использовать нотацию R1C1 для абсолютных ссылок. Обычно это выглядит как $A$2.

Для абсолютных ссылок мы НЕ используем квадратные скобки. Следующее создаст прямую ссылку на ячейку $A$2, строка 2, столбец 1

При создании смешанных ссылок относительный номер строки или
столбца будет зависеть от того, в какой ячейке находится формула.

Проще всего использовать макро-рекордер, чтобы понять это.

Свойство FormulaR1C1 и свойство формулы

Свойство FormulaR1C1 считывает нотацию R1C1 и создает
правильные ссылки в ячейках. Если вы используете обычное свойство Formula с
нотацией R1C1, то VBA попытается вставить эти буквы в формулу, что, вероятно,
приведет к ошибке формулы.

Поэтому используйте свойство Formula, если ваш код содержит
ссылки на ячейки ($ A $ 1), свойство FormulaR1C1, когда вам нужны относительные
ссылки, которые применяются к нескольким ячейкам или зависят от того, где
введена формула.

Если ваша электронная таблица изменяется в зависимости от
условий вне вашего контроля, таких как новые столбцы или строки данных,
импортируемые из источника данных, то относительные ссылки и нотация стиля
R1C1, вероятно, будут наилучшими.

Я надеюсь, что эти советы помогут. Пожалуйста, оставьте
комментарий ниже с вопросами или предложениями.

In this lesson you can learn how to add a formula to a cell using vba. There are several ways to insert formulas to cells automatically. We can use properties like Formula, Value and FormulaR1C1 of the Range object. This post explains five different ways to add formulas to cells.

We use formulas to calculate various things in Excel. Sometimes you may need to enter the same formula to hundreds or thousands of rows or columns only changing the row numbers or columns. For an example let’s consider this sample Excel sheet.

In this Excel sheet I have added a very simple formula to the D2 cell.

=B2+C2

So what if we want to add similar formulas for all the rows in column D. So the D3 cell will have the formula as =B3+C3 and D4 will have the formula as =B4+D4 and so on. Luckily we don’t need to type the formulas manually in all rows. There is a much easier way to do this. First select the cell containing the formula. Then take the cursor to the bottom right corner of the cell. Mouse pointer will change to a + sign. Then left click and drag the mouse until the end of the rows.

However if you want to add the same formula again and again for lots of Excel sheets then you can use a VBA macro to speed up the process. First let’s look at how to add a formula to one cell using vba.

How to add formula to cell using VBA

Lets see how we can enter above simple formula(=B2+C2) to cell D2 using VBA

In this method we are going to use the Formula property of the Range object.

We can also use the Value property of the Range object to add a formula to a cell.

Next method is to use the FormulaR1C1 property of the Range object. There are few different ways to use FormulaR1C1 property. We can use absolute reference, relative reference or use both types of references inside the same formula.

In the absolute reference method cells are referred to using numbers. Excel sheets have numbers for each row. So you should think similarly for columns. So column A is number 1. Column B is number 2 etc. Then when writing the formula use R before the row number and C before the column number. So the cell A1 is referred to by R1C1. A2 is referred to by R2C1. B3 is referred to by R3C2 etc.

This is how you can use the absolute reference.

If you use the absolute reference, the formula will be added like this.

If you use the manual drag method explained above to fill down other rows, then the same formula will be copied to all the rows.

In Majority cases this is not how you want to fill down the formula. However this won’t happen in the relative method. In the relative method, cells are given numbers relative to the cell where the formula is entered. You should use negative numbers when referring to the cells in upward direction or left. Also the numbers should be placed within the square brackets. And you can omit [0] when referring to cells on the same row or column. So you can use RC[-2] instead of R[0]C[-2]. The macro recorder also generates relative reference type code, if you enter a formula to a cell while enabling the macro recorder.

Below example shows how to put formula =B2+C2 in D2 cell using relative reference method.

Now use the drag method to fill down all the rows.

You can see that the formulas are changed according to the row numbers.

Also you can use both relative and absolute references in the same formula. Here is a typical example where you need a formula with both reference types.

We can add the formula to calculate Total Amount like this.

In this formula we have a absolute reference after the * symbol. So when we fill down the formula using the drag method that part will remain the same for all the rows. Hence we will get correct results for all the rows.

Add formula to cell and fill down using VBA

So now you’ve learnt various methods to add a formula to a cell. Next let’s look at how to fill down the other rows with the added formula using VBA.

Assume we have to calculate cell D2 value using =B2+C2 formula and fill down up to 1000 rows. First let’s see how we can modify the first method to do this. Let’s name this subroutine as “AddFormula_Method1_1000Rows”

Then we need an additional variable for the For Next statement

Dim WS As Worksheet
Dim i As Integer

Next, assign the worksheet to WS variable

Set WS = Worksheets(«Sheet1»)

Now we can add the For Next statement like this.

For i = 2 To 1000
     WS.Range(«D» & i).Formula = «=B» & i & «+C» & i
Next i

Here I have used «D» & i instead of D2 and «=B» & i & «+C» & i instead of «=B2+C2». So the formula keeps changing like =B3+C3, =B4+C4, =B5+C5 etc. when iterated through the For Next loop.

Below is the full code of the subroutine.

So that’s how you can use VBA to add formulas to cells with variables.

Next example shows how to modify the absolute reference type of FormulaR1C1 method to add formulas upto 1000 rows.

You don’t need to do any change to the formula section when modifying the relative reference type of the FormulaR1C1 method.

Use similar techniques to modify other two types of subroutines to add formulas for multiple rows. Now you know how to add formulas to cells with a variable. Next let’s look at how to add formulas with some inbuilt functions using VBA.

How to add sum formula to a cell using VBA

Suppose we want the total of column D in the D16 cell. So this is the formula we need to create.

=SUM(D2:D15)

Now let’s see how to add this using VBA. Let’s name this subroutine as SumFormula.

First let’s declare a few variables.

Dim WS As Worksheet
Dim StartingRow As Long
Dim EndingRow As Long

Assign the worksheet to the variable.

Set WS = Worksheets(«Sheet3»)

Assign the starting row and the ending row to relevant variables.

StartingRow = 2
EndingRow = 1

Then the final step is to create the formula with the above variables.

WS.Range(«D16»).Formula = «=SUM(D» & StartingRow & «:D» & EndingRow & «)»

Below is the full code to add the Sum formula using VBA.

How to add If Formula to a cell using VBA

If function is a very popular inbuilt worksheet function available in Microsoft Excel. This function has 3 arguments. Two of them are optional.

Now let’s see how to add a If formula to a cell using VBA. Here is a typical example where we need a simple If function.

This is the results of students on an examination. Here we have names of students in column A and their marks in column B. Students should get “Pass” if he/she has marks equal or higher than 40. If marks are less than 40 then Excel should show the “Fail” in column C. We can simply obtain this result by adding an If function to column C. Below is the function we need in the C2 cell.

=IF(B2>=40,»Pass»,»Fail»)

Now let’s look at how to add this If Formula to a C2 cell using VBA. Once you know how to add it then you can use the For Next statement to fill the rest of the rows like we did above. We discussed a few different ways to add formulas to a range object using VBA. For this particular example I’m going to use the Formula property of the Range object.

So now let’s see how we can develop this macro. Let’s name this subroutine as “AddIfFormula”

However we can’t simply add this If formula using the Formula property like we did before. Because this If formula has quotes inside it. So if we try to add the formula to the cell with quotes, then we get a syntax error.

Add formula to cell with quotes

There are two ways to add the formula to a cell with quotes.

Add vlookup formula to cell using VBA

Finally I will show you how to add a vlookup formula to a cell using VBA. So I created a very simple example where we can use a Vlookup function. Assume we have this section in the Sheet5 of the same workbook.

So here when we change the name of the student in the C2 cell, his/her pass or fail status should automatically be shown in the C3 cell. If the original data(data we used in the above “If formula” example) is listed in the Sheet4 then we can write a Vlookup formula for the C3 cell like this.

=VLOOKUP(Sheet5!C2,Sheet4!A2:C200,3,FALSE)

We can use the Formula property of the Range object to add this Vlookup formula to the C3 using VBA.

This tutorial will teach you how to create cell formulas using VBA.

Formulas in VBA

Using VBA, you can write formulas directly to Ranges or Cells in Excel. It looks like this:

Sub Formula_Example()

    'Assign a hard-coded formula to a single cell
    Range("b3").Formula = "=b1+b2"
    
    'Assign a flexible formula to a range of cells
    Range("d1:d100").FormulaR1C1 = "=RC2+RC3"

End Sub

There are two Range properties you will need to know:

• .Formula – Creates an exact formula (hard-coded cell references). Good for adding a formula to a single cell.
• .FormulaR1C1 – Creates a flexible formula. Good for adding formulas to a range of cells where cell references should change.

For simple formulas, it’s fine to use the .Formula Property.  However, for everything else, we recommend using the Macro Recorder…

Macro Recorder and Cell Formulas

The Macro Recorder is our go-to tool for writing cell formulas with VBA.  You can simply:

• Start recording
• Type the formula (with relative / absolute references as needed) into the cell & press enter
• Stop recording
• Open VBA and review the formula, adapting as needed and copying+pasting the code where needed.

I find it’s much easier to enter a formula into a cell than to type the corresponding formula in VBA.

Notice a couple of things:

• The Macro Recorder will always use the .FormulaR1C1 property
• The Macro Recorder recognizes Absolute vs. Relative Cell References

VBA FormulaR1C1 Property

The FormulaR1C1 property uses R1C1-style cell referencing (as opposed to the standard A1-style you are accustomed to seeing in Excel).

Here are some examples:

Sub FormulaR1C1_Examples()

    'Reference D5 (Absolute)
    '=$D$5
    Range("a1").FormulaR1C1 = "=R5C4"
    
    'Reference D5 (Relative) from cell A1
    '=D5
    Range("a1").FormulaR1C1 = "=R[4]C[3]"
    
    'Reference D5 (Absolute Row, Relative Column) from cell A1
    '=D$5
    Range("a1").FormulaR1C1 = "=R5C[3]"
    
    'Reference D5 (Relative Row, Absolute Column) from cell A1
    '=$D5
    Range("a1").FormulaR1C1 = "=R[4]C4"

End Sub

Notice that the R1C1-style cell referencing allows you to set absolute or relative references.

Absolute References

In standard A1 notation an absolute reference looks like this: “=$C$2”.  In R1C1 notation it looks like this: “=R2C3”.

To create an Absolute cell reference using R1C1-style type:

• R + Row number
• C + Column number

Example:  R2C3 would represent cell $C$2 (C is the 3rd column).

    'Reference D5 (Absolute)
    '=$D$5
    Range("a1").FormulaR1C1 = "=R5C4"

Relative References

Relative cell references are cell references that “move” when the formula is moved.

In standard A1 notation they look like this: “=C2”. In R1C1 notation, you use brackets [] to offset the cell reference from the current cell.

Example: Entering formula “=R[1]C[1]” in cell B3 would reference cell D4 (the cell 1 row below and 1 column to the right of the formula cell).

Use negative numbers to reference cells above or to the left of the current cell.

    'Reference D5 (Relative) from cell A1
    '=D5
    Range("a1").FormulaR1C1 = "=R[4]C[3]"

Mixed References

Cell references can be partially relative and partially absolute.  Example:

    'Reference D5 (Relative Row, Absolute Column) from cell A1
    '=$D5
    Range("a1").FormulaR1C1 = "=R[4]C4"

VBA Formula Property

When setting formulas with the .Formula Property you will always use A1-style notation.  You enter the formula just like you would in an Excel cell, except surrounded by quotations:

    'Assign a hard-coded formula to a single cell
    Range("b3").Formula = "=b1+b2"

VBA Formula Tips

Formula With Variable

When working with Formulas in VBA, it’s very common to want to use variables within the cell formulas.  To use variables, you use & to combine the variables with the rest of the formula string. Example:

Sub Formula_Variable()
    Dim colNum As Long
    colNum = 4

    Range("a1").FormulaR1C1 = "=R1C" & colNum & "+R2C" & colNum

End Sub

VBA Programming | Code Generator does work for you!

Formula Quotations

If you need to add a quotation (“) within a formula, enter the quotation twice (“”):

Sub Macro2()
    Range("B3").FormulaR1C1 = "=TEXT(RC[-1],""mm/dd/yyyy"")"
End Sub

A single quotation (“) signifies to VBA the end of a string of text. Whereas a double quotation (“”) is treated like a quotation within the string of text.

Similarly, use 3 quotation marks (“””) to surround a string with a quotation mark (“)

MsgBox """Use 3 to surround a string with quotes"""
' This will print <"Use 3 to surround a string with quotes"> immediate window

Assign Cell Formula to String Variable

We can read the formula in a given cell or range and assign it to a string variable:

'Assign Cell Formula to Variable
Dim strFormula as String
strFormula = Range("B1").Formula

Different Ways to Add Formulas to a Cell

Here are a few more examples for how to assign a formula to a cell:

1. Directly Assign Formula
2. Define a String Variable Containing the Formula
3. Use Variables to Create Formula

Sub MoreFormulaExamples ()
' Alternate ways to add SUM formula
' to cell B1
'
  Dim strFormula as String
  Dim cell as Range
  dim fromRow as long, toRow as long

  Set cell = Range("B1")

  ' Directly assigning a String
  cell.Formula = "=SUM(A1:A10)"

  ' Storing string to a variable
  ' and assigning to "Formula" property
  strFormula = "=SUM(A1:A10)"
  cell.Formula = strFormula

  ' Using variables to build a string 
  ' and assigning it to "Formula" property
  fromRow = 1
  toRow   = 10
  strFormula = "=SUM(A" & fromValue & ":A" & toValue & ")
  cell.Formula = strFormula
End Sub

Refresh Formulas

As a reminder, to refresh formulas, you can use the Calculate command:

Calculate

To refresh single formula, range, or entire worksheet use .Calculate instead:

Sheets("Sheet1").Range("a1:a10").Calculate

It is possible to use Excel’s ready-to-use formulas through VBA programming. These are properties that can be used with Range or Cells.

VBA Formula

Formula adds predefined Excel formulas to the worksheet. These formulas should be written in English even if you have a language pack installed.

    Range("F2").Formula = "=SUM(B2:C7)"
    Range("F3").Formula = "=SUM($B$2:$C$7)"

Do not worry if the language of your Excel is not English because, as in the example, it will do the translation to the spreadsheet automatically.

Multiple formulas

You can insert multiple formulas at the same time using the Formula property. To do this, simply define a Range object that is larger than a single cell, and the predefined formula will be «dragged» across the range.

«Dragging» manually:

«Dragging» by VBA:

    Range("D2:D7").Formula = "=SUM(B2:C2)"

    Range("D2").Formula = "=SUM(B2:C2)"
    Range("D2:D7").FillDown

VBA FormulaLocal

FormulaLocal adds predefined Excel formulas to the worksheet. These formulas, however, should be written in the local language of Excel (in the case of Brazil, in Portuguese).

    Range("F2").FormulaLocal = "=SOMA(B2:C7)"

Just as the Formula property, FormulaLocal can be used to make multiple formulas.

VBA FormulaR1C1

FormulaR1C1, as well as Formula and FormulaLocal, also adds pre-defined Excel formulas to the spreadsheet; however, the use of relative and absolute notations have different rules. The formula used must be written in English.

FormulaR1C1 is the way to use Excel’s ready-to-use formulas in VBA by easily integrating them into loops and counting variables.

In the notations:

• R refers to rows, in the case of vertical displacement
• C refers to columns, in the case of horizontal displacement
• N symbolizes an integer that indicates how much must be shifted in number of rows and/or columns

• Relative notation: Use as reference the Range that called it

The format of the relative formula is: R[N]C[N]:R[N]C[N].

    Range("F2").FormulaR1C1 = "=SUM(R[0]C[-4]:R[5]C[-3])" 'Equals the bottom row
    Range("F2").FormulaR1C1 = "=SUM(RC[-4]:R[5]C[-3])"

When N is omitted, the value 0 is assumed.

In the example, RC[-4]:R[5]C[-3] results in «B2: C7». These cells are obtained by: receding 4 columns to the left RC[-4] from Range(«F2») to obtain «B2»; and 5 lines down and 3 columns to the left R[5]C[-3] from Range(«F2») to obtain «C7».

• Absolute notation: Use the start of the spreadsheet as a reference

The format of the relative formula is: RNCN:RNCN.

    Range("F2").FormulaR1C1 = "=SUM(R2C2:R7C3)" 'Results in "$B$2:$C$7"

N negative can only be used in relative notation.

    Range("F2").FormulaR1C1 = "=SUM(RC[-4]:R7C3)" 'Results in "B2:$C$7"

VBA WorksheetFunction

Excel formulas can also be accessed by object WorksheetFunction methods.

    Range("F2") = WorksheetFunction.Sum(Range("B2:C7"))

Excel formulas can also be accessed similarly to functions created in VBA.

The formulas present in the WorksheetFunction object are all in English.

One of the great advantages of accessing Excel formulas this way is to be able to use them more easily in the VBA environment.

    MsgBox (WorksheetFunction.Sum(3, 4, 5))
    Expense=4
    MsgBox (WorksheetFunction.Sum(3, 4, 5,-Expense))

To list the available Excel formulas in this format, simply type WorksheetFunction. that automatically an option menu with all formulas will appear:

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