On double click event ,clear multiple picture box image at the same time

Question

Hello,

I have created one windows form with 100 picture boxes on it. Now i want to clear 100 picture boxes images at the same time on double click event. Please tell me the solution. 

Do needful.

Thanks & Regards

Rushali 

Answer 1

I'm not sure how you was able to fit the 100 picture box in one form!.

How did you add them to the form? If you added them dynamically via the code, you can place them in a Panel control and then when you want to clear call the Clear method on the panel to remove all the control it contains.

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Fouad Roumieh

Answer 2

It's not a good idea to use a Click and Double Click event for the same control since Double Clicks can be confused as a Click if the timing is not accurate for the Double Click which is set in Control Panel for a Mouse somewhere.

Either recursively search for all PictureBox's on the Form and clear them or when loading them add them all to a  List(Of PictureBox) and then use a loop to set all of the PictureBox's images or backgroundimages to Nothing in the List(Of PictureBox).

        For Each Item As PictureBox In Me.Controls.OfType(Of PictureBox)()
            Item.Image = Nothing
        Next

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La vida loca

Answer 3

Hi Fouad,

i want to clear multiple picture box images on their each picture box double click event separately. I have added picture boxes from toolbox directly. we can clear image of picture box with the help of following line of code-

Picturebox.image = Nothing

but i want to clear 100 picture box images for that i have to write the code for each picture box double click event. so i want to reduce the code. Please tell me the solution.

Thanks & Regards

Rushali

Answer 4

Hi Fouad,

i want to clear multiple picture box images on their each picture box double click event separately. I have added picture boxes from toolbox directly. we can clear image of picture box with the help of following line of code-

Picturebox.image = Nothing

but i want to clear 100 picture box images for that i have to write the code for each picture box double click event. so i want to reduce the code. Please tell me the solution.

Thanks & Regards

Rushali

Create one event and then in the DoubleClick event in the events window select that event for the 100 control DoubleClick event, thats if we said the same implementation of the event handler will be applied to all. This can be done via code also.

Then your event will be something like the below:

 Private Sub PBoxDoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.DoubleClick, PictureBox2.DoubleClick
        Dim pBox As PictureBox = CType(sender, PictureBox)
        pBox.Image = Nothing
    End Sub

However, I suggest that you describe the functional scenario that trying to achieve so maybe you can get a better idea of how to do this work, writing small amount of code is not the sign that you doing it right.

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Fouad Roumieh

Answer 5

Hello,

It is working. Thanks a lot.

Thanks & Regards

Rushali

Answer 6

Hello,

It is working. Thanks a lot.

Thanks & Regards

Rushali

Well then you should propose the post that answered the question as the answer so this thread will be ended and so people looking at this thread will know what answered the question.

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La vida loca

Answer 7

Hello,

Here you need the code in form load, all picture boxes are assumed to be on the form canvas

Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Me.Controls.OfType(Of PictureBox).Select(
            Function(pb) pb).ToList.ForEach(
            Sub(pb)
                AddHandler pb.DoubleClick,
                    Sub(sender1 As Object, e1 As EventArgs)
                        Me.SuspendLayout()
                        Try
                            Me.Controls.OfType(Of PictureBox).Select(
                                Function(pb1) pb1).ToList.ForEach(
                                Sub(item) item.Image = Nothing)
                        Finally
                            Me.ResumeLayout()
                        End Try
                    End Sub
            End Sub)
    End Sub
End Class

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Answer 8

@rushuMT

I suggest Kevinistructor solution, I mentioned previously that the event attachment can be done via code and this is the way to do it. This is more clean, since you looking for little code :).

I'm confused if you want to clear 1 picture box on double click or all at the same time, in case you want to clear only one you can merge both codes as below (with the apology to Kevininstructor for replicating his code in my post):

 Me.Controls.OfType(Of PictureBox).Select(
            Function(pb) pb).ToList.ForEach(
            Sub(pb)
                AddHandler pb.DoubleClick,
                    Sub(sender1 As Object, e1 As EventArgs)
                        Me.SuspendLayout()
                        Try
                            CType(sender1, PictureBox).Image = Nothing
                        Finally
                            Me.ResumeLayout()
                        End Try
                    End Sub
            End Sub)

---

Fouad Roumieh

Answer 9

In the future no apologies are not needed for any code I present as it is fair game :-)

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Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem. Contact via my webpage under my profile but do not reply to forum questions.
Microsoft Developer tools
Developer’s Guide to Windows 10 video series

Answer 10

This works for attaching event handler also.

        For Each Item As PictureBox In Me.Controls.OfType(Of PictureBox)()
            AddHandler, Item.DoubleClick, AddressOf PBoxDoubleClick
        Next

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La vida loca