' 1 to 5 means 5 rows starting from 1 to 5 and 1 to 2 means 2 columns starting from 1 upto 2
' declaring and defining size of an array Let us assume it’s storing student information again. It is a 2D array with layers from front to back (one behind the other). You can think of this like a Rubik’s cube. Here is an example of a three dimensional array.'1 to 5 means 5 rows starting from 1 to 5 and 1 to 2 means 2 columns starting from 1 to 2įor i = 1 To 5 ' iterate through all rowsįor j = 1 To 2 ' iterate through all columns Here is an example of a 2D array with student names and their exam results.Complete example of a 2D array with a “nested for” loop The lbound is equal to 1 and ubound is 2. The index should start with 1 and end with 2. This means that the lbound is 1 and ubound is 5 for the rows. In this example, we say that index for the the items of the first dimension should start with 1 instead of 0 and procced with 5 items through to the index 5. Dim arr_sample( 1 to 5, 1 to 2 ) as String There is also another way of declaring the array object, by specifying the lbound and ubound. But an array can have a maximum of 32 dimensions! Declaration – with indexesĪs mentioned earlier in this article, the dimensions are separated by commas while declaring the array object. Generally, two or three dimensions can usually meet our purposes for programming. So, the 2D arrays we discussed above also fall under this category.
#Excel vba tutorial dynamic two dimensional array code#
'4 means 5 rows starting from 0 to 4 and 1 means 2 columns starting from 0 to 1įor i = LBound(arr_sna) To UBound(arr_sna)ĭebug.Print "Food Item : " & arr_sna(i, 0)ĭebug.Print "Price : " & arr_sna(i, 1)īelow is the structure of the 2D array defined by the code above.Īrrays with more than 1 dimension are called multidimensional arrays. Example of a two dimensional array Sub array_2d_snacks() This declares an array of 3 rows and 2 columns that can hold integer values. To declare an array of more than 1 dimension, we use commas to separate the dimensions. The two dimensions can be indicated with the X and Y coordinates. These arrays can be imagined as values spread across rows and columns in two dimensions.
Sub array_snacks()įor i = LBound(arr_snacks1) To UBound(arr_snacks1) The “lbound” of an array is the index value with which the array items start and the “ ubound” value of an array is the index with which the array list ends.
You can see that the five items are stored in indexes starting from 0 to 4 (5 total items). Here is an example of an array in VBA that has a list of foods. The index of an array always starts with 0 the elements are recognized using their respective indexes.
An array is one column of elements that are of the same datatype. The best way to think about this structure is as a list of items one below the other. Dynamic array in which dimensions are changed:.An example of a fixed array in which the last dimension cannot be changed:.The ReDim keyword with Multidimensional arrays.Set the size of arrays just after declaration.Complete example of a 2D array with a “nested for” loop.
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