Excel VBA Appending data to single Array - excel

Question

Am trying to parse an excel file using Excel VBA.
Here is the sample sata
I did some research and found you can assign ranges to array like
Arrayname = Range("A1:D200")
But am looking for some thing more dynamic, like add the below multiple ranges to a single array.
and my final array will be a single array/table with n is number of rows from all ranges and 4 columns.
Can any one please prvide me a example.
Thank you in adavance.

Answer 1

I think you are asking for more information about moving data between ranges and variables so that is the question I will attempt to answer.
Create a new workbook. Leave Sheet1 empty; set cell B3 of Sheet2 to "abc" and set cells C4 to F6 of Sheet3 to ="R"&ROW()&"C"&COLUMN()
Open the VB Editor, create a module and copy the follow code to it. Run macro Demo01().
Option Explicit
Sub Demo01()
Dim ColURV As Long
Dim InxWkSht As Long
Dim RowURV As Long
Dim UsedRangeValue As Variant
' For each worksheet in the workbook
For InxWkSht = 1 To Worksheets.Count
With Worksheets(InxWkSht)
Debug.Print .Name
If .UsedRange Is Nothing Then
Debug.Print " Empty sheet"
Else
Debug.Print " Row range: " & .UsedRange.Row & " to " & _
.UsedRange.Row + .UsedRange.Rows.Count - 1
Debug.Print " Col range: " & .UsedRange.Column & " to " & _
.UsedRange.Column + .UsedRange.Columns.Count - 1
End If
UsedRangeValue = .UsedRange.Value
If IsEmpty(UsedRangeValue) Then
Debug.Print " Empty sheet"
ElseIf VarType(UsedRangeValue) > vbArray Then
' More than one cell used
Debug.Print " Values:"
For RowURV = 1 To UBound(UsedRangeValue, 1)
Debug.Print " ";
For ColURV = 1 To UBound(UsedRangeValue, 2)
Debug.Print " " & UsedRangeValue(RowURV, ColURV);
Next
Debug.Print
Next
Else
' Must be single cell worksheet
Debug.Print " Value = " & UsedRangeValue
End If
End With
Next
End Sub
The following will appear in the Immediate Window:
Sheet1
Row range: 1 to 1
Col range: 1 to 1
Empty sheet
Sheet2
Row range: 3 to 3
Col range: 2 to 2
Value = abc
Sheet3
Row range: 4 to 6
Col range: 3 to 5
Values:
R4C3 R4C4 R4C5
R5C3 R5C4 R5C5
R6C3 R6C4 R6C5
If you work through the macro and study the output you will get an introduction to loading a range to a variant. The points I particularly want you to note are:
The variable to which the range is loaded is of type Variant. I have never tried loading a single range to a Variant array since the result may not be an array. Even if it works, I would find this confusing.
Sheet1 is empty but the used range tells you than cell A1 is used. However, the variant to which I have loaded the sheet is empty.
The variant only becomes an array if the range contains more than one cell. Note: the array will ALWAYS be two dimensional even if the range is a single row or a single column.
The lower bounds of the array are ALWAYS 1.
The column and row dimensions are not standard with the rows as dimension 1 and the columns as dimension 2.
If there is any doubt about the nature of the range being loaded, you must use IsEmpty and VarType to test its nature.
You may also like to look at: https://stackoverflow.com/a/16607070/973283. Skim the explanations of macros Demo01() and Demo02() which are not relevant to you but set the context. Macro Demo03() shows the advanced technique of loading multiple worksheets to a jagged array.
Now create a new worksheet and leave it with the default name of Sheet4.
Add the follow code to the module. Run macro Demo02().
Sub Demo02()
Dim ColOut As Long
Dim OutputValue() As String
Dim Rng As Range
Dim RowOut As Long
Dim Stg As String
ReDim OutputValue(5 To 10, 3 To 6)
For RowOut = LBound(OutputValue, 1) To UBound(OutputValue, 1)
For ColOut = LBound(OutputValue, 2) To UBound(OutputValue, 2)
OutputValue(RowOut, ColOut) = RowOut + ColOut
Next
Next
With Worksheets("Sheet4")
Set Rng = .Range("A1:D6")
End With
Rng.Value = OutputValue
With Worksheets("Sheet4")
Set Rng = .Range(.Cells(8, 2), .Cells(12, 4))
End With
Rng.Value = OutputValue
With Worksheets("Sheet4")
Stg = "C" & 14 & ":G" & 20
Set Rng = .Range(Stg)
End With
Rng.Value = OutputValue
End Sub
Although this macro writes an array to a worksheet, many of the points apply for the opposite direction. The points I particularly want you to note are:
For output, the array does not have to be Variant nor do the lower bounds have to be 1. I have made OutputValue a String array so the values output are strings. Change OutputValue to a Variant array and rerun the macro to see the effect.
I have used three different ways of creating the range to demonstrate some of your choices.
If you specify a range as I have, the worksheet is one of the properties of the range. That is why I can take Rng.Value = OutputValue outside the With ... End With and still have the data written to the correct worksheet.
When copying from a range to a variant, Excel sets the dimensions of the variant as appropriate. When copying from an array to a range, it is your responsibility to get the size of the range correct. With the second range, I lost data. With the third range, I gained N/As.
I hope the above gives you an idea of your options. If I understand your requirement correctly, you will have to:
Load the entire worksheet to Variant
Create a new Array of the appropriate size
Selectively copy data from the Variant to the Array.
Come back withh questions if anything is unclear.