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Excel VBA: Load csv file into multi dimensional array

Posted on 2014-10-30
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Hello,

I need to load a comma separated csv file into a multidimensional array in excel vba, and I'm wondering if there's a better way than looping through it which I of course could do.

ExampleFile.csv:

"Header1","header2","header3","header4","header5"[crlf]
"row1col1data","row1col2data","row1col3data","row1col4data","row1col5data"[crlf]
"row2col1data","row2col2data","row2col3data","row2col4data","row2col5data"[crlf]

I've defined an array:

Dim GTArr(45, 1) As String ' (there are 45 columns)

Question #1, how do I easiest add the file into the array?  and #2, should I read the number of lines in the text file first to get the numbers of rows in the array or redim it for each row I add?

Redim Preserve GTArr(45, CurrentRow+1)

thanks
~j
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Question by:prosit
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LVL 54

Expert Comment

by:Rgonzo1971
ID: 40413137
Hi,

you could open it with excel

and then assign the used range to an array (previously defined as variant)

Sub Macro()
Dim aMyArray As Variant
Set myRng = ActiveSheet.UsedRange
aMyArray = myRng
End Sub

Regards
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LVL 2

Author Comment

by:prosit
ID: 40413145
Well.. I guess I should have been more precise in what I needed.  The text will eventually go into a spreadsheet, in a certain column, depending on the column of the text file, that's why I need it in an array first.
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LVL 54

Expert Comment

by:Rgonzo1971
ID: 40413211
What I mean is you open you csv load in your array and then close your csv

you can the manipulate your array before paste it in excel
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LVL 2

Author Comment

by:prosit
ID: 40413305
I don't think I understand.  

I don't want to open the file in excel first; it's an automated process, read file, parse it into the columns I want then save spreadsheet and we're done.

~j
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LVL 54

Accepted Solution

by:
Rgonzo1971 earned 2000 total points
ID: 40413388
Hi,

pls try

Sub Macro()

strCsv = "aa,bb,cc dd" & vbCrLf & "a,b,c,d" & vbCrLf & "a,b,c,d"
Dim aMyArray As Variant
Dim aMyArrayFinal As Variant
aMyArray = Split(strCsv, vbCrLf)
FstDimension = UBound(aMyArray)
SndDimension = UBound(Split(aMyArray(0), ","))
ReDim myArrayFinal(FstDimension, SndDimension)
For Idx1 = LBound(aMyArray) To UBound(aMyArray)
    For Idx2 = 0 To SndDimension
        myArrayFinal(Idx1, Idx2) = Split(aMyArray(Idx1), ",")(Idx2)
    Next
Next
End Sub

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Author Closing Comment

by:prosit
ID: 40414216
It wasn't what I was looking for but I resolved it myself...
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