How can I toggle button with key VB - vb.net

Question

I try to toggle button with a key I can't find the solution. Can Someone help me? Here is the code of button.
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
toggle = toggle + 1
If toggle = 1 Then
Timer1.Start()
Button1.Text = "Status: ON"
Else
Timer1.Stop()
toggle = 0
Button1.Text = "Status: OFF"
End If
End Sub

Answer 1

You can use the KeyDown or KeyUp event of the Form:
'bind the KeyUp event
AddHandler Me.KeyUp, AddressOf SubToPressButton
'the Sub which is triggered by the KeyUp event
Sub SubToPressButton(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs)
'click button on key "A"
If e.KeyCode = Keys.A Then
Button1.PerformClick()
End If
End Sub
'your Button1 click event
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
toggle += 1
If toggle = 1 Then
Timer1.Start()
Button1.Text = "Status: ON"
Else
Timer1.Stop()
toggle = 0
Button1.Text = "Status: OFF"
End If
End Sub
You also have to enable the KeyPreview of the Form:
Me.KeyPreview = True
You can set the above line to the constructor (New) or Load event of the Form. You can also enable the KeyPreview directly on the properties of the Form.
You need to toggle the button outside the application?
In this case you need global keyboard hooks. You can find a solution on StackOverflow already:
listen for a key when the application is not focused
Catching "global hotkeys" (Windows)
But be careful, other applications can use global or local hotkeys too.

Answer 2

I would probably learn from the other answers - regarding KeyUp/Down events, but just to enhance your existing code, try this;
Private toggle As Boolean
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
If Not toggle Then
Timer1.Start()
Button1.Text = "Status: ON"
Else
Timer1.Stop()
Button1.Text = "Status: OFF"
End If
toggle = Not toggle
End Sub
What I've done is;
Change the toggle integer to a boolean - since it's being used as a flag
Use that flag to toggle the timer on or off for every button click
Invert the flag at the end of every button click
I hope that helps - but as noted above - there are better ways to achieve this!

Answer 3

Use an accelerator key, i.e. add an ampersand (&) to the Text property and you can use the subsequent character's key with the Alt key.
Also, instead of a Button, use a Checkbox with its Appearance set to Button.