Create a save button in winforms - winforms

Question

Goal:
I am attempting to create a button that would save a file to desktop. The incoming file is fetched with an Invoke-WebRequest using the GET method. I want the save button to be in my pop-up window.
Here is an example:
Side note:
This code is sitting in a switch with a variable split three ways.
switch (...) {
p {
if ($second -match 'RegexMatch') {
$resource = $second
$fileResult = Invoke-WebRequest -Uri https://url.com/$resource/file -WebSession $currentsession
# End API Call
Write-Host
Write-Host '------------' -ForegroundColor Green
Write-Host 'FILE Results' -ForegroundColor Green
Write-Host '------------' -ForegroundColor Green
# Create Window
Add-Type -AssemblyName System.Windows.Forms
$form = New-Object -TypeName System.Windows.Forms.Form
$form.StartPosition = 'CenterScreen'
$form.KeyPreview = $true
$form.Add_KeyDown {
if ($_.Control -and $_.KeyCode -eq 'F') {
Add-Type -AssemblyName Microsoft.VisualBasic
$stringToFind = [Microsoft.VisualBasic.Interaction]::InputBox('Please enter your search terms', 'Find')
$pos = $textBox.Text.IndexOf($stringToFind)
if ($pos -ne -1) {
$textBox.SelectionStart = $pos
$textBox.SelectionLength = $stringToFind.Length
}
}
}
# Textbox
$textBox = New-Object -TypeName System.Windows.Forms.TextBox
$textBox.Dock = [Windows.Forms.DockStyle]::Fill
$textBox.ReadOnly =$true
$textBox.Multiline = $true
$textBox.ScrollBars = 'Vertical'
$textBox.Font = New-Object -TypeName System.Drawing.Font -ArgumentList ('Arial',12)
$textBox.ForeColor = 'White'
$textBox.Text = $fileResult
$textBox.BackColor = 'Black'
$textBox.ShortcutsEnabled = $true
$Form.Controls.Add($textBox)
# Button
$btn = New-Object -TypeName System.Windows.Forms.Button
$btn.Text = 'Finish'
$btn.DialogResult = 'Ok'
$btn.Dock = 'bottom'
$form.Controls.Add($btn)
if ($form.ShowDialog() -eq 'Ok') {
$tb.lines
}
} else {
Write-Host
Write-Warning -Message 'Please enter a valid FILE ID'
Write-Host
}
break
}
...
}
Purpose:
I want to add an option for the user to download the file for a closer look in a different application.
Question:
How would I begin to create a button utilizing winforms in powershell to save this file to disk?
Here is what I have tried:
$BtnSave=New-Object -TypeName System.Windows.Forms.Button
$BtnSave.Text='Save'
$BtnSave.Dock='bottom'
$btnSave.DialogResult='Ok'
$form.Controls.Add($BtnSave)
$BtnSave.Add_Click({
$SaveFileDialog = New-Object 'System.Windows.Forms.SaveFileDialog'
if ($SaveFileDialog.ShowDialog() -eq 'Ok')
{
$textBox.Text = $SaveFileDialog.FileName
Write-Information 'File Saved'
}
})
New Problem:
File is not saving to disk still, but the save file dialog does show up on click. In addition, using Switch -OutFile with my Invoke-WebRequest is shooting me an error.
Error:
Invoke-WebRequest : Missing an argument for parameter 'OutFile'. Specify a parameter of type 'System.String' and try again.

Answer 1

After adding a button where you want in the form, the Add_Click() method will allow you to handle its click event and run any scriptblock you want (when button is clicked).
At this point, the -OutFile argument for Invoke-WebRequest will help with saving the downloaded file to disk (pass it the desired path to the file).