Unable to trigger click event in PowerShell - html

Question

I want to automate a task at my work where i need to fill a form in one of our intranet sites. Basically i need to call the site, fill a specific textbox and click the save button. I am trying first to test the code on Google website but it is not working, although i am copying most of it from various sources.
The code mostly works fine. I am able to open Internet explorer, navigate to google, fill the search textbox, but i am stuck when clicking the button.
$Url
$Textbox
$Url = “www.google.com”
$Textbox=”test”
$IE = New-Object -com internetexplorer.application;
$IE.visible = $true
$IE.navigate($url)
while ($IE.Busy -eq $true)
{
Start-Sleep -Milliseconds 2000
}
$IE.Document.getElementsByname(“q”)[0].value = $Textbox
$IE.Document.getElementsByname(“btnk”)[0].Click()
while ($IE.Busy -eq $true)
{
Start-Sleep -Milliseconds 2000
}
The error message i keep getting is this:
You cannot call a method on a null-valued expression. At line:17
char:1
+ $IE.Document.getElementsByname(“btnk”)[0].Click()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull
enter image description here

Answer 1

getElementsByname name parameter is case sensitive.
The name of the Search element is btnK and not btnk.
Change to:
$IE.Document.getElementsByname("btnK")[0].Click()

Answer 2

I have reproduced the problem on my machine, it seems that this behavior is related to the IE browser protected mode. Before turning on the protected mode, it will show this behavior.
To solve this issue, please turn on the Protected Mode (in my machine, I enabled the protected mode in different zones. The screenshot like this).
Besides, you could also run the PowerShell as admin.
The PowerShell script as below:
$Url
$Textbox
$Url = "www.google.com"
$Textbox="test"
$IE = New-Object -com internetexplorer.application;
$IE.visible = $true
$IE.navigate($url)
while ($IE.Busy -eq $true) { Start-Sleep -Milliseconds 2000 }
Start-Sleep -Seconds 1
$IE.Document.getElementsByName("q")[0].value = $Textbox
Start-Sleep -Seconds 1
$IE.Document.getElementsByName("btnK")[0].Click()
while ($IE.Busy -eq $true) { Start-Sleep -Milliseconds 2000 }

Answer 3

I've always used:
$Button_Name.RaiseEvent((New-Object -TypeName System.Windows.RoutedEventArgs $([System.Windows.Controls.Button]::ClickEvent)))
Because it works for me and I'm too lazy to look for anything else.