PowerShell – Form – Input, Enter, Escape, OK Button

This is the third example of a PowerShell form. In this version, I have added event handling for the ENTER and ESCAPE keys, created a single OK button (rather than Yes No), and have tied the ENTER key event to a Perform Click; it will access the button action $handler_OK_Button_Click. Something else you will notice, the previous example would close immediately once you selected Yes. This form is persistent.

What the form looks like

 

The Code

# Call Function 
CreateForm

function CreateForm { 

#Import Assemblies 
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$Form1 = New-Object System.Windows.Forms.Form 
$OKButton = New-Object System.Windows.Forms.Button 
$InitialFormWindowState = New-Object System.Windows.Forms.FormWindowState 
$Label1 = New-Object System.Windows.Forms.Label
$textBox1 = New-Object System.Windows.Forms.TextBox
$Field1 = ""

# Check for ENTER and ESC presses
$Form1.KeyPreview = $True
$Form1.Add_KeyDown({if ($_.KeyCode -eq "Enter") 
    {
	# if enter, perform click
	$OKButton.PerformClick()
	}
})
$Form1.Add_KeyDown({if ($_.KeyCode -eq "Escape") 
   	{
	# if escape, exit
	$Form1.Close()
	}
})

# The action on the button
$handler_OK_Button_Click= 
{ 
	$Field1 = $textBox1.Text
	$Field1
	
	# Returns a message of no data
	if ($Field1 -eq "") {[System.Windows.Forms.MessageBox]::Show("You didn't enter anything!", "Data")}
	
	# Returns what they types. You could add your code here
	else {[System.Windows.Forms.MessageBox]::Show($Field1, "Data")}	 
}

$OnLoadForm_StateCorrection= 
{
$Form1.WindowState = $InitialFormWindowState 
}


# Form Code 
$Form1.Name = "Data_Form"
$Form1.Text = "Data Form" 
$Form1.MaximizeBox = $false #lock form
$Form1.FormBorderStyle = 'Fixed3D'
# None,FixedDialog,FixedSingle,FixedToolWindow,Sizable,SizableToolWindow

# Icon
$Form1.Icon = [Drawing.Icon]::ExtractAssociatedIcon((Get-Command powershell).Path)
# $NotifyIcon.Icon = [Drawing.Icon]::ExtractAssociatedIcon((Get-Command powershell).Path)

$Form1.DataBindings.DefaultDataSourceUpdateMode = 0 
$Form1.StartPosition = "CenterScreen"# moves form to center of screen
$System_Drawing_Size = New-Object System.Drawing.Size 
$System_Drawing_Size.Width = 300 # sets X
$System_Drawing_Size.Height = 150 # sets Y
$Form1.ClientSize = $System_Drawing_Size

$OKButton.Name = "OK_Button" 
$System_Drawing_Size = New-Object System.Drawing.Size 
$System_Drawing_Size.Width = 45
$System_Drawing_Size.Height = 23

$OKButton.Size = $System_Drawing_Size 
$OKButton.UseVisualStyleBackColor = $True
$OKButton.Text = "OK"
$System_Drawing_Point = New-Object System.Drawing.Point 
$System_Drawing_Point.X = 30 
$System_Drawing_Point.Y = 113

$OKButton.Location = $System_Drawing_Point 
$OKButton.DataBindings.DefaultDataSourceUpdateMode = 0 
$OKButton.add_Click($handler_OK_Button_Click)
$Form1.Controls.Add($OKButton)

$InitialFormWindowState = $Form1.WindowState 
$Form1.add_Load($OnLoadForm_StateCorrection) 

$Label1.Location = New-Object System.Drawing.Point(10,20)
$Label1.Size = New-Object System.Drawing.Size(280,20)
$Label1.Text = "Enter data here:"
$Form1.Controls.Add($Label1)
 
$textBox1.TabIndex = 0 # Places cursor in field
$textBox1.Location = New-Object System.Drawing.Point(10,40)
$textBox1.Size = New-Object System.Drawing.Size(260,20)
$Form1.Controls.Add($textBox1)
$Form1.Topmost = $True # Moves form to top and stays on top
$Form1.Add_Shown({$textBox1.Select()})

# Show Form 
$Form1.ShowDialog()
}