VBA Declare Array

Excel VBA Declare Array

Declaration of array in VBA is very similar to that of variables it is done by the same dim statement or static public or private statement, the only difference in declaring an array and declaring a variable is that while declaring an array we have to provide a size of an array which is upper bound of the array and the lower bound of the array.

In VBA Code, we can declare a single variable array that can hold the number of variables instead of declaring single variables. This can help to reduce the number of lines in the code.

The array is a kind of variable that can hold more than one value, unlike regular variables that can hold only one value at a time. The array is an advanced version of declaring variables in VBA. For example, imagine a situation where you want to assign 5 students names to variables, and in general practice, we declare five variables for all the five variables we assign individual student names one by one; below is the example code of the same.

Code:

Sub Array_Example()

  Dim Student1 As String
  Dim Student2 As String
  Dim Student3 As String
  Dim Student4 As String
  Dim Student5 As String

End Sub

Instead of declaring so many variables, how about the idea of declaring a single variable array which can hold all the student names.

Yes, this is possible by declaring the array in VBA.

Examples

You can download this VBA Declare Array Excel Template here – VBA Declare Array Excel Template

Example #1

To declare, we need not do any special VBA coding. Rather, we need to follow simple concepts.

First, start the subprocedure.

Code:

Sub Array_Example()

End Sub
VBA Declare Array Example 1

Now, as usual, declare a variable as a string.

Code:

Sub Array_Example()

  Dim Student As String

End Sub
VBA Declare Array Example 1-1

Once the variable is declared, now make sure how many values it should hold. In this case, I want to store five students’ names, so now we need to fix the array size i.e., 1 to 5. Supply the same thing to variable in brackets.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String

End Sub
VBA Declare Array Example 1-2

Now for this single variable, we can store 5 student names.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String

  Student(1) = "John"
  Student(2) = "Peter"
  Student(3) = "Ricky"
  Student(4) = "Michael"
  Student(5) = "Anderson"

End Sub
VBA Declare Array Example 1-3

Look how many lines we have reduced by declaring the variable as an array. This is one way of doing. We can still shorten this code by enclosing this inside the loops in VBA.

Now for an example, the same five names I have in worksheet cells.3

VBA Declare Array Example 1-4

Now I want to show these numbers in the message box in VBA; ok, let’s declare one more variable for loops as Integer data type.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String
  Dim K As Integer

End Sub
VBA Declare Array Example 1-5

As usual, I have retained the array variable as 1 to 5 sizes.

Now open FOR NEXT loop in VBA, and since we have five names enter the limit as 1 to 5.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String
  Dim K As Integer

  For K = 1 To 5
  Next K

End Sub
VBA Declare Array Example 1-6

To assign values to the array variable, we need not follow the previous way of showing Student(1), Student(2) like this for numbers position supply loops variable “k.”

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String
  Dim K As Integer

  For K = 1 To 5
   Student(K) =
  Next K

End Sub
VBA Declare Array Example 1-7

For this array variable, we need the values from the worksheet, so using CELLS property gets the values from the worksheet.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String
  Dim K As Integer

  For K = 1 To 5
   Student(K) = Cells(K, 1).Value
  Next K

End Sub
VBA Declare Array Example 1-8

Now through the message box, show the value of the array variable.

Code:

Sub Array_Example()

  Dim Student(1 To 5) As String
  Dim K As Integer

  For K = 1 To 5
   Student(K) = Cells(K, 1).Value
   MsgBox Student(K)
  Next K

End Sub
Example 1-9

Now run the code. In the message box, we will see the first name. Again press Ok to see the second name. Like this by pressing Ok, we can see all the five names.

Example 1-10

Example #2 – Two Dimensional Arrays

We have seen above how the array works, now we will see to dimensional arrays. Two-dimensional arrays concentrate on both rows and columns.

In the above example, we have determined the array’s size as 1 to 5; this either concentrates on rows or columns.

By using two-dimensional arrays, we can concentrate on both rows and columns. For this, we need to enclose two loops.

First, define the variable then late we will decide about the size of the array.

Code:

Sub Two_Array_Example()

  Dim Student As String

End Sub

First, decide row size then decide the column length.

Code:

Sub Two_Array_Example()

  Dim Student(1 To 5, 1 To 3) As String

End Sub

For this, I have structured the data for student names, marks, and grade status.

Two Dimensional Example 2

Now come back to the coding window.

Declare two more variables for a loop.

Code:

Sub Two_Array_Example()

  Dim Student(1 To 5, 1 To 3) As String
  Dim K As Integer, J As Integer

End Sub

Now enclose the loop, as shown below.

Code:

Sub Two_Array_Example()

 Dim Student(1 To 5, 1 To 3) As String
 Dim k As Integer, J As Integer

 For k = 1 To 5

  For J = 1 To 3
   Worksheets("Student List").Select
   Student(k, J) = Cells(k, J).Value
   Worksheets("Copy Sheet").Select
   Cells(k, J).Value = Student(k, J)
  Next J

Next k

End Sub

What this will do is it will copy the data from the “Student List” sheet and paste in “Copy Sheet.”

Two Dimensional Example 2-1.png

Things to Remember

  • The array is a vast concept; this is just an introductory part.
  • You need advanced coding skills to understand the array declaration.
  • The more you use arrays in your code, the more you will get used to it.

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This has been a guide to VBA Declare Array. Here we learn how to declare one dimensional and two-dimensional arrays in VBA along with examples and a downloadable excel template. Below are some useful excel articles related to VBA –

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