Powershell how to I copy() a worksheet and saveas it's own workbook - excel

Question

I'm not to great with powershell, but I am writing a script that opens an excel file, reads content from a .txt file, and throws that data into the excel sheet. The data entered in will give values to a chart on another worksheet. I want to ask the user if they would like to create a copy of this chart or not (not always required) If the user would like to then it will copy only the chart worksheet, and saveas its own workbook (..copyedChart.xls).
Now, I know when I use the .Copy() function it will take the current active sheet and already open up a new instance of excel. My problem is actually being able "control" this new instance of excel, I am having trouble understanding how to actually call that sheet and save it.
Here is what I have..
#Create an instance of Excel
$excel = New-Object -comobject Excel.Application
Write-Host "Initializing applications.." #all Write-Host are for the users..
#declaring sheet names..
$sheetName = "Sheet1"
$sheetName2 = "Sheet2"
$excel.displayAlerts = $false
Try{
#open Excel file
[string]$file = "C:\Users\Desktop\test.xls"
#create a reference to the specified excel workbook
$workBook = $excel.Workbooks.open($file)
#activates sheet
$sheet = $workBook.WorkSheets.Item($sheetName).activate()
$excel.Visible = $true
$data = Get-Content C:\Users\Desktop\input.txt
}#end try
Catch{
Write-Host "An error has occured."
}#end catch
Write-Host "Inputting new data.."
$i = 0
$rowNumber = 2
#Im just parsing the input.txt and spitting it out into excel
foreach($row in $data){
if($row){
[Array] $index = $row.Split(" ")
$i++
$column = 1
if($i -ge 1){
foreach($item in $index){
$excel.Cells.Item($rowNumber, $column) = "$item"
$column++
}#end foreach
$rowNumber++
}#end if $i
}#end if $row
}#end foreach
$date = $excel.Cells.Item(2, 1).Value().toString("MMMM-dd-yyyy") #row, column
#changes the active sheet
$sheet2 = $workBook.Sheets.Item($sheetName2).Select()
#references the active chart on the active page
$chart = $workBook.ActiveChart
Write-Host "Updating charts.."
#changes the title of the chart to include the current date
$chart.ChartTitle.Text = "Some title - $date"
#saves the files to these locations
$save = 'C:\Users\Desktop\'+$date+'-text.xls'
$saveChartCopy = 'C:\Users\Desktop\'+$date+'-CHARTCOPY.xls'
Write-Host "Saving new file.."
#save this workbook
$workBook.SaveAs($save)
#asks the user if they would like to create a copy of the chart
$makeCopy = Read-Host ("Would you like to create a copy of the chart? (y/n)")
#-----------------------------------------------------------STUCK HERE
#if yes, copy and save the chart as a new workbook.
if($makeCopy -eq "y" -or $makeCopy -eq "Y"){
$copiedChart = $chart.Copy() #Copies the chart and opens into a new instance of excel...
$copiedChart.SaveAs($saveChartCopy) #My sad attempt at trying to save the copied chart...
}
#if no, than close excel
elseif($makeCopy -eq "n" -or $makeCopy -eq "N"){
#close excel
Write-Host "Closing Excel.."
$excel.Quit()
Write-Host "Complete!"
}
else{
Read-Host "Please enter a valid option!"
}
If there is any confusion as to what I am asking please ask and I will try to further explain.
Also, because I am new to powershell and I am kind of a noob programmer.. I am open to all other input in regards to my code.

Answer 1

You have to create a new workbook object with $Excel.Workbooks.add():
$NewWorkBook = $Excel.Workbooks.Add()
# Copy and paste your sheet
$NewWorkBook.SaveAs($FileName)
$NewWorkBook.Close()

Answer 2

If I understand your problem correctly(and please tell me if I'm not), all you have to do is catch the handle to the new workbook in another variable. I was curious about this myself and decided to throw something quick and dirty to play around with it. Try something like this:
$Excel = New-Object -ComObject "Excel.Application"
$Workbook = $Excel.Workbooks.Add()
$Sheet = $Workbook.Worksheets.Item(1)
$Excel.Visible = $true
$Cells = $Sheet.Cells
$Workbook2 = $Excel.Workbooks.Add()
$Sheet2 = $Workbook2.Worksheets.Item(1)
$Cells2 = $Sheet2.Cells
$Cells.Item(1,1) = "Book 1"
$Cells2.Item(1,1) = "Book 2"
$Workbook.Close()
$Workbook2.Close()
$Excel.Quit()
[System.Runtime.Interopservices.Marshal]::ReleaseComObject($Excel)
Also, don't forget to cleanup that ComObject!