Powershell ignore "Read Only" request and open without read only - excel

Question

I have a document set to request that user open a read only version(Option "Read-only Recommended"). I would like to open the excel document without read on only in powershell (decline the prompt asking to open "Read Only"). Here is my current code.
$dir = "\\file_path\*"
$latest = Get-ChildItem -Path $dir | Sort-Object LastAccessTime -Descending | Select-Object -First 1
$latest.name
$excelObj = New-Object -ComObject Excel.Application
$excelObj.Visible = $True
$excelObj.DisplayAlerts = $False
$workBook = $excelObj.Workbooks.Open($latest)
How do I ignore the read only prompt and open the full version?

Answer 1

There should be a IgnoreReadOnlyRecommended argument that you can supply in the workbook open method:
$workBook = $excelObj.Workbooks.Open($latest,,,,,,$True,,,,,,,)
Workbooks.Open Method (MSDN)
Edit
Based on comments below, it appears that there is a bug preventing this method from working when the $null parameters are supplied. Thanks to this answer on another question it appears there may be a way around this:
1st, this function is required:
Function Invoke-NamedParameter {
[CmdletBinding(DefaultParameterSetName = "Named")]
param(
[Parameter(ParameterSetName = "Named", Position = 0, Mandatory = $true)]
[Parameter(ParameterSetName = "Positional", Position = 0, Mandatory = $true)]
[ValidateNotNull()]
[System.Object]$Object
,
[Parameter(ParameterSetName = "Named", Position = 1, Mandatory = $true)]
[Parameter(ParameterSetName = "Positional", Position = 1, Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[String]$Method
,
[Parameter(ParameterSetName = "Named", Position = 2, Mandatory = $true)]
[ValidateNotNull()]
[Hashtable]$Parameter
,
[Parameter(ParameterSetName = "Positional")]
[Object[]]$Argument
)
end { ## Just being explicit that this does not support pipelines
if ($PSCmdlet.ParameterSetName -eq "Named") {
## Invoke method with parameter names
## Note: It is ok to use a hashtable here because the keys (parameter names) and values (args)
## will be output in the same order. We don't need to worry about the order so long as
## all parameters have names
$Object.GetType().InvokeMember($Method, [System.Reflection.BindingFlags]::InvokeMethod,
$null, ## Binder
$Object, ## Target
([Object[]]($Parameter.Values)), ## Args
$null, ## Modifiers
$null, ## Culture
([String[]]($Parameter.Keys)) ## NamedParameters
)
} else {
## Invoke method without parameter names
$Object.GetType().InvokeMember($Method, [System.Reflection.BindingFlags]::InvokeMethod,
$null, ## Binder
$Object, ## Target
$Argument, ## Args
$null, ## Modifiers
$null, ## Culture
$null ## NamedParameters
)
}
}
}
Which would suggest the Workbooks.Open() method could be called like so:
$workBook = Invoke-NamedParameter $excelObj "Workbooks.Open" #{"FileName"=$latest;"IgnoreReadOnlyRecommended"=$True}

Answer 2

If your looking to just open the file for reading and ignore the prompt then this works:
$workBook = $excelObj.Workbooks.Open($latest,$null,$true)
The 3rd argument denotes true to open read-only.
This approach does not appear to be subject to the aforementioned bug!