Powershell Text Field Auto-Complete - textbox

Question

I have a text box for which I want to use autocomplete, reading from a text file source. I'm following the general example on MSDN here:
http://msdn.microsoft.com/en-us/library/system.windows.forms.textbox.autocompletemode(v=vs.110).aspx
My code doesn't throw an error (haha), but it's not populating the text box when I start a string, either.
$LogList = Get-Content(Resolve-Path "file\logs.txt")
$comp_or_filepath.AutoCompleteSource.CustomSource
$comp_or_filepath.AutoCompleteCustomSource.AddRange($LogList)
$comp_or_filepath.AutoCompleteMode.SuggestAppend
Is there a good example for this I can see online? I found one for a combo box, but I don't think it applies in my case.
Thank you!

Answer 1

Here what I hope you're looking for nearly 7 years on?
I'm looking into AutoCompleteCustomSource for PowerShell and very little info can be got on it.
You were trying to access a prop that didn't exist.
$comp_or_filepath.AutoCompleteSource.CustomSource
$comp_or_filepath.AutoCompleteMode.SuggestAppend
That should have been:
$comp_or_filepath.AutoCompleteSource = 'CustomSource'
$comp_or_filepath.AutoCompleteMode = 'SuggestAppend'
Here's the code with comments:
Add-Type -AssemblyName System.Windows.Forms
#Form setup
$Form = New-Object System.Windows.Forms.Form
$Form.StartPosition = 'CenterScreen'
#Set up the control comp_or_filepath
$comp_or_filepath = New-Object System.Windows.Forms.ComboBox
$comp_or_filepath.Width = 280
$comp_or_filepath.AutoCompleteSource = 'CustomSource'
$comp_or_filepath.AutoCompleteMode = 'SuggestAppend'
$cbArr = #('Mixed', 'More stuff', 'ANOTHER THING cONTENT', 'Item ?', 'Mixed item')
$comp_or_filepath.Items.AddRange($cbArr)
# Setup the autocomplete source by reading the file contents and adding each line.
$autoCompleteUsrSrc = New-Object System.Windows.Forms.AutoCompleteStringCollection
Get-Content(Resolve-Path "file\logs.txt") | ForEach-Object {
$autoCompleteUsrSrc.AddRange($_)
}
$comp_or_filepath.AutoCompleteCustomSource = $autoCompleteUsrSrc
# Add controls and start form.
$Form.Controls.Add($comp_or_filepath)
[void]$Form.ShowDialog()