TheDcoder

Trying to loop through every row in a Excel sheet

22 posts in this topic

#1 ·  Posted (edited)

Hello :)
I am relatively new to the world of Microsoft Office and the Excel UDF.

I am trying to loop through every row in a spreadsheet and get the text/values from each column in the given row... so far I have looked into the Help file for the Excel UDF and the wiki page for Excel UDF but I have no idea about how this is done :(... This is all I have in my script:

Global $oExcel = _Excel_Open(False, False, False, False, True)
Global Const $sSpreadsheet = @ScriptDir & '\data.xlsx'
Global $oSpreadsheet = _Excel_BookOpen($oExcel, $sSpreadsheet, True, False)

; ...

I am placing my bet on the _Excel_Range functions... especially _Excel_RangeRead. I don't know how $vRange works so I would be glad if someone can point me in the right direction :D. What I would ideally like is to get all of the contents of the spreadsheet (it's just a normal text one) in a 2D array.

Thanks in Advance!

Edited by TheDcoder
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#2 ·  Posted

You can use something like:

#include <Array.au3>
#include <Excel.au3>
Global $oExcel = _Excel_Open(False, False, False, False, True)
Global Const $sSpreadsheet = @ScriptDir & '\data.xlsx'
Global $oSpreadsheet = _Excel_BookOpen($oExcel, $sSpreadsheet, True, False)
Global $aSpreadsheet = _Excel_RangeRead($oSpreadsheet)
_ArrayDisplay($aSpreadsheet)

 

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#3 ·  Posted

Wow! :o
It was so easy! :thumbsup:
Also, if possible, is there way to exclude blank rows in the _Excel_RangeRead function?


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#4 ·  Posted

No unfortunately, well not that I've ever seen without manipulating the document first, it's probably easier just to loop through the array and remove the empty rows.

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#5 ·  Posted

I see... Okay, thanks for the help :)


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#6 ·  Posted

I came upon this function a while ago if you want to have a premade way of removing blanks:

Func _ArrayRemoveBlanks(ByRef $arr) ;self explanatory
  $idx = 0
  For $i = 0 To UBound($arr) - 1
    If $arr[$i] <> "" Then
      $arr[$idx] = $arr[$i]
      $idx += 1
    EndIf
  Next
  ReDim $arr[$idx]
EndFunc

Just makes it super simple, I copy this into my scripts whenever I need to work with arrays.


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#7 ·  Posted

@anthonyjr2 That's a strange way to remove blanks from an (1D) array... I wonder why it rewrites a row with the same contents? ($arr[$idx] = $arr[$i])


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#8 ·  Posted

To be fair I never actually checked to see how it worked, I got it from here a long time ago:

But from looking at it now, what it's doing is going through and checking to see if each element is blank. If it isn't blank, it adds it to a new array. That way in the end the array will only contain non-blank elements. So that line is just putting the nonblank elements into a new array.


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#9 ·  Posted (edited)

5 minutes ago, anthonyjr2 said:

it adds it to a new array

I can only see one array and that is $arr ;)

5 minutes ago, anthonyjr2 said:

That way in the end the array will only contain non-blank elements.

No, what it's doing is using $idx to count all "non-blank" elements and and resizing/trimming the array using ReDim

Edited by TheDcoder

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#10 ·  Posted

Oh, you're right there is only one array. Regardless it still basically does the same thing, just modifying the original array instead of creating a temporary one.


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#11 ·  Posted

@anthonyjr2 Your statement only makes it look smarter to be honest :D. There are several flaws... not to mention the obvious unnecessary rewriting of elements.... or that is what I thought until now. It actually moves all non-empty elements up, shifts all gaps to the bottom and then truncates the array. I have to admit, it's clever... but not very effective! Still does the job though, so I guess we can use it when feeling lazy :).


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#12 ·  Posted

I suggest to loop through the array; write the line numbers of empty rows to a string so you get a valid range for _ArrayDelete; then call _ArrayDelete a single time passing the mentioned string.


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#13 ·  Posted

@water That is what I had in mind :).

I am urged to create another function which can remove all blank elements with the most efficient way to do it... but if I do that, I will be pushing my personal projects again... they have crossed the deadline a long time ago :(


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#14 ·  Posted

I admit I didn't have performance in mind when I was looking for a solution....usually when I am throwing a project together I use the first working answer I come across :sweating:

 

P.S. This is my 200th post :D

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#15 ·  Posted

Congrats :D

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#16 ·  Posted

Yep, I can understand :).

P.S Congratulations on the 200th post

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#17 ·  Posted

I think it depends on what the end result you want for example do you only want to remove blank rows or blank cells?  For example would you want to just remove Row 3 or all blanks and move them up?

|   A   |   B   |
|   A1  |   A1  |
|       |   A2  |
|       |       |
|   A4  |       |
|   A5  |   A5  |

Anyway I figured out how to do it within Excel and then export it to an Array, just need to comment/uncomment the Row or Cell section in the code to see both examples.

#include <Array.au3>
#include <Excel.au3>
Global Const $xlByRows = 1
Global Const $xlByColumns = 2
Global Const $xlPrevious = 2
Global Const $xlUp = -4162
Global $oExcel = _Excel_Open(False, False, False, False, True)
Global $sWorkbook = @ScriptDir & '\Filename.xlsx'
Global $oWorkbook = _Excel_BookOpen($oExcel, $sWorkbook, True, False)

;~ #### Begin Remove All Blank Rows #### ~;
    Global $oEntireRow, $iLastRow = $oWorkbook.ActiveSheet.Cells.Find('*', $oWorkbook.ActiveSheet.Cells(1, 1), Default, Default, $xlByRows, $xlPrevious).Row
    For $i = $iLastRow To 1 Step - 1
        $oEntireRow = $oWorkbook.ActiveSheet.Cells($i, 1).EntireRow
        If $oExcel.WorksheetFunction.CountA($oEntireRow) = 0 Then $oEntireRow.Delete
    Next
;~ #### Begin Remove All Blank Rows #### ~;

;~ #### Begin Remove All Blank Cells #### ~;
;~  $oWorkbook.ActiveSheet.UsedRange.Cells.SpecialCells($xlCellTypeBlanks).Delete($xlUp)
;~ #### End Remove All Blank Cells #### ~;

Global $aWorkbook = _Excel_RangeRead($oWorkbook, Default, $oWorkbook.ActiveSheet.UsedRange)
_Excel_BookClose($oWorkbook, False)
_Excel_Close($oExcel)

 _ArrayDisplay($aWorkbook)

 

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#18 ·  Posted

@Subz It works! I have no idea how... but it does work :D. Although I have noticed that it can take a while (around 5 seconds for me) for the code to filter all blank rows :)


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#19 ·  Posted

instead of the loop you can use the specials as well (works especially well if you have to only check one column, should be similar for checking the whole row).  Would look something like:

#include <Array.au3>
#include <Excel.au3>
Global $oExcel = _Excel_Open(False, False, False, False, True)
Global Const $sSpreadsheet = @ScriptDir & '\filename.xlsx'
Global $oSpreadsheet = _Excel_BookOpen($oExcel, $sSpreadsheet, True, True)


$oExcel.activesheet.Range("A1:A10").SpecialCells($xlCellTypeBlanks).EntireRow.Delete = True


Global $aSpreadsheet = _Excel_RangeRead($oSpreadsheet , Default , Default , 1)
_Excel_BookClose($oSpreadsheet, FALSE)
_Excel_Close($oExcel , FALSE , TRUE)
_ArrayDisplay($aSpreadsheet)

 


,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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#20 ·  Posted

@iamtheky That would work if you had a key column (with blank rows to show new range, see example below), but wouldn't work with the example I posted above, which is why I used the loop and the CountA function against each row (for deleting rows anyway).  Which is why it's slow to get a result,  As mentioned above it really depends on the workbook layout and also how you want the information returned.

|   A   |   B   |
|   A1  |   B1  |
|   A2  |   B2  |
|       |       |
|   A4  |   B4  |
|   A5  |       |
|   A6  |   B6  |
|       |       |
|   A8  |   B8  |

 

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" & $err & @CRLF) Exit EndIf EndIf $aLinks = $oExcel.ActiveWorkbook.LinkSources($xlExcelLinks) _Excel_BookClose($oExcel, False) _Excel_Close($oExcel, False, True) If IsArray($aLinks) Then If UBound($aLinks) > 0 Then For $iLoop = 0 To UBound($aLinks) - 1 If $aLinks[$iLoop] <> $strFileName Then $iExists = FileExists($aLinks[$iLoop]) ConsoleWrite("DEBUG - Calling WriteNode()") __WriteNode($aLinks[$iLoop], $iExists) ConsoleWrite("DEBUG - Calling WriteLink()") __WriteLink($strFileName, $aLinks[$iLoop]) If $iExists And ($aLinks[$iLoop] <> $strFileName) Then _GetExcelLinks($aLinks[$iLoop]) EndIf Next EndIf EndIf EndFunc ;==>_GetExcelLinks Func __WriteNode($sName, $iExists) Local $iErrLoop = 5 ;Number of attempts to make Local $vResult Do ConsoleWrite("DEBUG - WriteNode()" & @CRLF & " _SQLite_Exec(INSERT OR IGNORE INTO nodes ('name', 'fileexists') VALUES (" & _SQLite_FastEscape($sName) & ", " & $iExists & ");) - create node entry" & @CRLF) $vResult = _SQLite_Exec($sSQLiteDB, "INSERT OR IGNORE INTO nodes ('name', 'fileexists') VALUES (" & _SQLite_FastEscape($sName) & ", " & $iExists & ");") If Not $vResult = $SQLITE_OK Then Sleep(100) $iErrLoop -= 1 If $iErrLoop = 0 Then $vResult = $SQLITE_OK ;Used up all our attempts, so simulate a success Until $vResult = $SQLITE_OK EndFunc ;==>__WriteNode Func __WriteLink($sName1, $sName2) Local $iErrLoop = 5 ;Number of attempts to make Local $vResult, $hQuery, $vCount ConsoleWrite("DEBUG - WriteNode()" & @CRLF & " _SQLite_Query(SELECT weight FROM links WHERE 'name1'=" & _SQLite_FastEscape($sName1) & " AND 'name2'=" & _SQLite_FastEscape($sName2) & ";) - lookup link entry" & @CRLF) _SQLite_Query($sSQLiteDB, "SELECT weight FROM links WHERE 'name1'=" & _SQLite_FastEscape($sName1) & " AND 'name2'=" & _SQLite_FastEscape($sName2) & ";", $hQuery) ConsoleWrite("DEBUG - _SQLite_FetchData()" & @CRLF) _SQLite_FetchData($hQuery, $vCount) If UBound($vCount) > 1 Then _ArrayDisplay($vCount) If $SQLITE_OK And UBound($vCount) > 1 Then $vCount = $vCount[1] + 1 Else $vCount = 1 EndIf Do If $vCount = 1 Then ConsoleWrite("DEBUG - _SQLite_Exec() - create link entry" & @CRLF) $vResult = _SQLite_Exec($sSQLiteDB, "INSERT INTO links ('name1', 'name2', 'weight') VALUES (" & _SQLite_FastEscape($sName1) & ", " & _SQLite_FastEscape($sName2) & ", " & $vCount & ");") Else ConsoleWrite("DEBUG - _SQLite_Exec() - update link entry" & @CRLF) $vResult = _SQLite_Exec($sSQLiteDB, "UPDATE links SET 'weight'=" & $vCount & " WHERE 'name1'=" & _SQLite_FastEscape($sName1) & " AND 'name2=" & _SQLite_FastEscape($sName2) & ";") EndIf If Not $vResult = $SQLITE_OK Then Sleep(100) $iErrLoop -= 1 If $iErrLoop = 0 Then $vResult = $SQLITE_OK ;Used up all our attempts, so simulate a success Until $vResult = $SQLITE_OK EndFunc ;==>__WriteLink ; #FUNCTION# ==================================================================================================================== ; Author ........: SEO <locodarwin at yahoo dot com> ; Modified.......: litlmike, water, GMK, willichan ; =============================================================================================================================== Func _Excel_BookOpen_NoUpdate($oExcel, $sFilePath, $bReadOnly = Default, $bVisible = Default, $sPassword = Default, $sWritePassword = Default) If Not IsObj($oExcel) Or ObjName($oExcel, 1) <> "_Application" Then Return SetError(1, @error, 0) If Not FileExists($sFilePath) Then Return SetError(2, 0, 0) If $bReadOnly = Default Then $bReadOnly = False If $bVisible = Default Then $bVisible = True ;; changing the second parameter on the following line to a 0 tells Excel not to update any links. Local $oWorkbook = $oExcel.Workbooks.Open($sFilePath, 0, $bReadOnly, Default, $sPassword, $sWritePassword) If @error Then Return SetError(3, @error, 0) $oExcel.Windows($oWorkbook.Name).Visible = $bVisible ; If a read-write workbook was opened read-only then return an error If $bReadOnly = False And $oWorkbook.Readonly = True Then Return SetError(4, 0, $oWorkbook) Return $oWorkbook EndFunc ;==>_Excel_BookOpen_NoUpdate Func _GenerateGraph() RunWait(@ScriptDir & '\GraphViz238\bin\dot.exe -Tpng "' & @ScriptDir & '\' & $MyName & '.gv" -o "' & @ScriptDir & '\ExcelLinksMapper.png"') EndFunc ;==>_GenerateGraph Func _WriteHeader() __OutLine(0, "digraph main {") EndFunc ;==>_WriteHeader Func _WriteNodes() Local $aResult, $iRows, $iColumns, $iRval Local $iLoop, $sStyle __OutLine(1, "// Nodes") $iRval = _SQLite_GetTable($sSQLiteDB, "SELECT name, fileexists FROM nodes;", $aResult, $iRows, $iColumns) If @error Then ConsoleWrite("_WriteNodes()" & @CRLF & "_SQLite_GetTable") If $iRval = $SQLITE_OK Then For $iLoop = 1 To $iRows If $aResult[($iLoop * 2) + 2] > 0 Then $sStyle = "normal" Else $sStyle = "missing" EndIf __OutNode($aResult[1 + (2 * $iLoop)], $sStyle) ;; Next Else MsgBox($MB_SYSTEMMODAL, "SQLite Error: " & $iRval, _SQLite_ErrMsg() & @CRLF & "in _WriteNotes() calling _SQLite_GetTable()") Exit EndIf EndFunc ;==>_WriteNodes Func __OutNode($sName, $sStyle = Default) If $sStyle = Default Then $sStyle = "Normal" Switch StringLower($sStyle) Case "missing" __OutLine(1, __MakeName($sName) & ' [label="' & StringReplace($sName, "\", "\\") & '",color=red,fontcolor=red,shape=octagon];') Case Else ;"normal", Default __OutLine(1, __MakeName($sName) & ' [label="' & StringReplace($sName, "\", "\\") & '",color=black,fontcolor=black,shape=box];') EndSwitch EndFunc ;==>__OutNode Func _WriteLinks() Local $aResult, $iRows, $iColumns, $iRval Local $iLoop, $sStyle, $aCount __OutLine(1, "// Links") $iRval = _SQLite_GetTable($sSQLiteDB, "SELECT name1, name2 FROM links ORDER BY name1 ASC, name2 ASC;", $aResult, $iRows, $iColumns) If $iRval = $SQLITE_OK Then For $iLoop = 1 To $iRows __OutLink($aResult[1 + (2 * $iLoop)], $aResult[2 + (2 * $iLoop)]) Next Else MsgBox($MB_SYSTEMMODAL, "SQLite Error: " & $iRval, _SQLite_ErrMsg()) Exit EndIf EndFunc ;==>_WriteLinks Func __OutLink($sName1, $sName2, $iWeight = 1) __OutLine(1, __MakeName($sName1) & ' -> ' & __MakeName($sName2) & ';') EndFunc ;==>__OutLink Func _WriteFooter() __OutLine(0, "}") EndFunc ;==>_WriteFooter Func __OutLine($iTabs, $sText) Local $iLoop If $iTabs > 0 Then For $iLoop = 1 To $iTabs FileWrite($hOutfile, " ") ;ConsoleWrite(" ") Next EndIf FileWriteLine($hOutfile, $sText) EndFunc ;==>__OutLine Func __MakeName($sText) Local $sNewName = StringReplace($sText, "\", " ") $sNewName = StringReplace($sNewName, "/", " ") $sNewName = StringReplace($sNewName, "'", " ") $sNewName = StringReplace($sNewName, '"', " ") $sNewName = StringReplace($sNewName, ':', " ") $sNewName = StringReplace($sNewName, '.', " ") $sNewName = StringReplace($sNewName, '-', " ") $sNewName = StringReplace($sNewName, '$', " ") $sNewName = StringStripWS($sNewName, 8) Return StringLower($sNewName) EndFunc ;==>__MakeName  
    • Dimmae
      By Dimmae
      Hello,
      at first: i'm new here, so please forgive me my mistakes, and show them to me, just that i can learn to do better in the future.
      Now to my Problem: i have an excel sheet, where i just need some columns for further actions, but i have no idea how to add single columns to a new array.
      I found the following code(the one i just added as a file) from 'water' in this forum, but i wont get how i could add multiple columns into a new array.
      The biggest problem in my situation is that i dont know the count of the rows i need for the array, i just got a fix number of rows, which is 4.
       
      Hope you can help me, and sry again for this 'unlucky illustration'.
       
      btw: how can i add code shown as code here, instead of posting it as a attached file?.
       
       
       
      autoit-select-column.au3
      defects.xlsx
    • LoneWolf_2106
      By LoneWolf_2106
      Hi,
      i have an error:
      ==> The requested action with this object has failed.: $iRowCount = .Range(.Cells(1, 1), .Cells($oRangeLast.Row, $oRangeLast.Column)).Rows.Count $iRowCount = .Range(^ ERROR  
      My code is:
      $oRangeLast = .UsedRange.SpecialCells($xlCellTypeLastCell) Sleep(1000) $iRowCount = .Range(.Cells(1, 1), .Cells($oRangeLast.Row, $oRangeLast.Column)).Rows.Count Sleep(1000) _Excel_RangeWrite($oWorkbook_1, $oWorkbook_1.ActiveSheet,$aFileList[$i][2] , "AB3:AB"&$iRowCount) I have added some sleep because the application was crashing more often before, so i thought to slow down the code execution.
      But i didn't solve the issue.
      Has anyone an idea of what the problem might be?
      Thanks in advance.