Reading Excel Spreadsheet and adding information to it - excel

Question

I currently have a spreadsheet with the following display:
+------------+---------+---------+
| Site | UserP |UserName |
+------------+---------+---------+
| Site A | Read | user1 |
| | | |
+------------+---------+---------+
| Site A | Write | user2 |
| | | |
+------------+---------+---------+
The problem is that sometimes the UserName field brings a Group and then I have to open this group and create a new row for each user in this group with the same information.
So if I had this:
Site A | Read | Group 1
It would become this:
Site A | Read | Group 1
Site A | Read | Group 1 User A
Site A | Read | Group 1 User B
Site A | Read | Group 1 User C
I can manually pull the information from the group, the thing is that I don't know how to read a specific column from excel and then create a new row in that excel sheet.
I didn't post any code cause I barely have one. I don't know how to loop to the cells.
This is what I have.
$file = "\Desktop\AccessReviewReportPRE.csv"
$sheetName = "AccessReviewReportPRE"
$objExcel = New-Object -ComObject Excel.Application
$workbook = $objExcel.Workbooks.Open($file)
$sheet = $workbook.Worksheets.Item($sheetName)
Now, I know how to access individual cells, like this:
$worksheet.cells.Item(3, 3).text
Just not sure how to loop trough all rows, check what is in the third column and do a action on that.
Following #BenH tip, I did this:
$file = "\Desktop\AccessReviewReportPRE.csv"
$fileContent = Import-csv $file -header "URL", "Site/List/Folder/Item", "Title/Name", "PermissionType", "Permissions", "LoginName"
$newRow = New-Object PsObject -Property #{"URL" = 'sdfs'; "Site/List/Folder/Item" = 'dsfd'; "Title/Name" = 'sdf'; "PermissionType" = 'dsf'; "Permissions" = 'sdfs'; "LoginName" = 'sdf'}
$fileContent += $newRow
$fileContent | Export-Csv -NoTypeInformation -Path "\Desktop\AccessReviewReportAFTER.csv"
But it is duplicating the header. Any ideas why?

Answer 1

To loop through each Row you need a loop.
I recommend a do-while.
#My Code to find a groupname
$WorkBook=$Excel.Workbooks.Open($strPath)
#Selcet the first Tabelle
$mappe = $workbook.sheets.item(1)
$Target = $mappe.Range("A1").Find($Grouname)
$start = $Target.Row
end, $middle, $counter = 0
do {
#assigning
$middle = $end
#Search Funktion
$nextFind = $mappe.Range("A1:A150000").FindNext($Target)
#Old Range assinging to $find
$Target = $nextFind
#Assign the Rownumber
$end = $nextFind.Row
#Check if the Value is correct
if ($mappe.cells.Item($nextFind.Row,1).Value() -eq $Groupname)
{
$counter++
}else{
break
}
}while($end -gt $start)
#The FindNext function only works when there are at least 2 of the groups
#but in some cases there is only 1 group. To fix the issue a counter counts
#the passages and if it is 1, $middle will be assigned the start row.
if($counter -eq 1)
{
$middle= $start
}
#Because a line must be added after the last one, $row needs be increased by 1
$row = $middle + 1
#Column stays the same, later it will be increased
$column = $Target.Column
# ADD ROW
$eRow = $mappe.cells.item($row,1).entireRow
$active = $eRow.activate()
$active = $eRow.insert()
With this Code, I'm looking for a Group. The Finde function which I use helps me to locate the group. The finde function does not work in a loop, that's why you must use the FindeNext function.
$middle contains the last row number to add a row it must be increased.
In order to add data into multiple columns, the row has to stay the same, but the column must be increased.
$mappe.Cells.Item($row, $column) = Text
$column++
If you wanna check the 3 column and based on its value you wanna make an action, make a if-statment.
I know the Code ain't perfect, but I hope it helped.