Disable picturebox_click event on vb.net

Question

I'm using a click event on a picture box, that can only be enabled after some actions.

Private Sub PictureBox_Click_1(sender As Object, e As EventArgs) Handles PictureBox.Click

But i want to disable that click without using picturebox.enabled=false cause it changes the original colour to grey.

How can i do that ? Thank you!

remove the click event? this can be found in the event properties of the picturebox. — user1234433222, Jun 21 '16 at 10:47
@Werdna ye sure. and how do i use it when i want to actually use the picture click? — noidea, Jun 21 '16 at 10:50
you could set up a boolean I guess, you need to show us what you have tried — user1234433222, Jun 21 '16 at 12:01

score 1 · Accepted Answer · edited Jun 21 '16 at 13:20

There are two possibilities.

You use a boolean value indicating that you don't want to run the logic in the event handler.

Here is an example:

Private _usePictureBoxEvent as Boolean = True

Private Sub PictureBox_Click_1(sender As Object, e As EventArgs) Handles PictureBox.Click
    If _usePictureBoxEvent Then
        'Do your event stuff here
    End If
End Sub

To deactivate the event handling:

_usePictureBoxEvent = False 'the event will still be activated but we'll do nothing

Dynamically subscribe to the event: AddHandler and RemoveHandler

Here's an example:

Public Sub New()
    'VS calls this, don't touch
    InitializeComponents()

    'We add a listener to this event
    AddHandler Me.PictureBox.Click, AddressOf PictureBox_Click_1

    'Other stuff
End Sub

Private Sub PictureBox_Click_1(sender As Object, e As EventArgs) 'No more Handles clause
    'Do your event stuff

End Sub

And to stop the event from triggering:

'Anywhere in your code
RemoveHandler Me.PictureBox.Click, AddressOf PictureBox_Click_1

score 0 · Answer 2 · answered Jun 21 '16 at 12:13

If you are using a static event handler ( Handles [...] ) is a bit harder to remove it.

The easiest and cleanest solution would be to have a boolean and check its value on the event (and changing it where you need to allow/disallow it).

Or change it to a non-static handler: AddHandler/RemoveHandler.

Other solutions would imply inheriting the PictureBox and overriding the OnClick method.

Disable picturebox_click event on vb.net

2 Answers2