How PowerShell Sum an Excel column and print the result? - powershell

Question

I have an excel file with 10 columns. I want to get the sum of the column with header "Sales" and print it on the console.
How this can be done with PowerShell? I am using the below code but I do not know how to replace H with $i in the following expression:
='=SUM(H1:H'+$RowCount')'
Where H is column "Sales"
$Excel = New-Object -ComObject Excel.Application
$Excel.Visible = $False
$NewWorkbook = $Excel.Workbooks.open("C:\Test.xlsx")
$NewWorksheet = $NewWorkbook.Worksheets.Item(1)
$NewWorksheet.Activate() | Out-Null
$NewWorksheetRange = $NewWorksheet.UsedRange
$RowCount = $NewWorksheetRange.Rows.Count
$ColumnCount = $NewWorksheetRange.Columns.Count
for ($i = 1; $i -lt $ColumnCount; $i++)
{
if ($NewWorksheet.cells.Item(1,$i).Value2 -eq "Sales")
{
$NewWorksheet.Cells.Item($RowCount+2,$i)='=SUM(H1:H'+$RowCount')'
Write-Host $NewWorksheet.Cells.Item($RowCount+1,$i).Value2
}
}
$Excel.Application.DisplayAlerts=$False
$NewWorkbook.SaveAs("C:\Test_New.xlsx")
$NewWorkbook.close($false)
$Excel.quit()
spps -n excel
I have replaced:
$NewWorksheet.Cells.Item($RowCount+2,$i) ='=SUM(H1:H'+(1+$RowCount)+')'
Write-Host $NewWorksheet.Cells.Item($RowCount+2,$i).Value2
with:
$FirstCell = $NewWorksheet.Cells(2,$i).Address('+True, False+')
$LastCell = $NewWorksheet.Cells(1+$RowCount,$i).Address('+True, False+')
$NewWorksheet.Cells.Item($RowCount+2,$i)='=SUM('+$FirstCell+':'+$LastCell+')'
Write-Host $NewWorksheet.Cells.Item($RowCount+2,$i).Value2

Answer 1

I can highly recommend the PowerShell-Module "ImportExcel". This Modules enables you to import Excel-Files as easy as with Import-Csv
Without knowing much about your files/enviroment, you could try something like this:
foreach ($data in (Import-Excel "$PSScriptRoot\test.xlsx")) {
$result += $data.Sales
}
Write-Host $result