How do I display user selected images from file in several picture boxes (or)?

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VS2015

Hi, I'm new to VB and I'm attempting to use several picture boxes on a panel to display multiple randomly user selected images/pictures (JPG) from file using the OpenFileDialog. The idea of the panel is to be able to scroll through multiple images/pictures side by side and in rows. Because the images/pictures need to be randomly selected from file by user I don't want to use an image list which only loads a preselected list of images/pictures. My attempts at finding a code which places a different user selected image/picture, one in each picture box (i.e. PictureBox1 = Pic1; PictureBox2=Pic2, etc.) resulted in only one image being generated in all picture boxes even though I have set the OpenFileDialog's multiselect property to true?

Any help would be greatly appreciated!

Thanks,

John.

What I have tried:

VB

Private Sub SelectFileButton_Click(sender As Object, e As EventArgs) Handles SelectFileButton.Click

        ' Show the Open File dialog. If the user clicks OK, load the
        ' picture that the user chose.

        Dim ofd As New OpenFileDialog
        If ofd.ShowDialog = DialogResult.OK Then
            If ofd.FileName <> String.Empty Then
                PictureBox1.Image = Bitmap.FromFile(ofd.FileName)
            End If
        End If

    End Sub

Posted 1-Mar-17 10:51am

Member 13032047

Updated 1-Mar-17 11:10am

Bryian Tan

v2

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Comments

[no name] 1-Mar-17 17:32pm

"I'm new to VB", then you should get familiar with reading the documentation for the controls/classes that you use. https://msdn.microsoft.com/en-us/library/system.windows.forms.filedialog.filenames(v=vs.110).aspx

Member 13032047 2-Mar-17 15:18pm

Interestingly enough, that's what I've been doing! However, familiarity with the controls and numerous webpages, tutorials, etc. has not produced anything beyond a picture viewer that views one image at a time (which is what a pb does), a picture viewer that views multiple images by clicking on a button, loading images through ImageList control, etc. If you read beyond the "I'm new to VB" (as in, not a veteran of 30 years!) you might find that the controls are not the issue! What I'm interested in is displaying more than one random user selected image from file at a time in several pb's. The issue is to code for randomly selected images from file to be displayed, each one in its own separate picture box! I also successfully followed a tutorial for dynamically generating pb's on a panel and displaying different images in each one from ImageList, however the images are all out of focus! It's much wiser to hear a question before you try to answer it! I might remind you of the box at the bottom of the page which reads:

When answering a question please:
1. Read the question carefully.
2. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
3. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome!

Let's work to help developers, not make them feel stupid.

Garth J Lancaster 1-Mar-17 19:05pm

I'm guessing if you're using "OpenFileDialog" you're using a Winforms based project ? .. have you thought about perhaps displaying the images in a ListView or DataGridView ?

Member 13032047 2-Mar-17 15:28pm

Hi Garth, yes I'm using OFD and Winforms. No, I did think about ListView, but kept going on the Panel/PictureBox idea because seems like what everyone talks about in tutorials/articles, etc. I hadn't thought about the DataGridView and presume that would use a DB as data source for images? The panel works well for scrolling images because it creates scrollbars automatically when image/images are larger than display area. Also, picture boxes seem to be widely used? I'll have another look at ListView! Thanks for your help!

Garth J Lancaster 2-Mar-17 17:09pm

"and presume that would use a DB as data source for images?" .. sure, you can, but you dont have to do that - you can set the whole thing up programatically... how about 'middle ground', OFD -> DataTable or ListView, bind the DataTable to a Listview or DataGridView

Your question obviously isnt the 'boring' normal stuff - it may need you to play with a few controls/techniques till you find something that meets your requirements

Ralf Meier 2-Mar-17 6:06am

The way I would go would be (like suggested by Garth) :
- create a List which contains the filenames of the selected Images
- to fill this list you could create your own Dialog
- perhaps you want that finally all this is done (more or less) automaticly you could create your own control which is able to Display this List (and perhaps scroll it)

But the way is up to you to decide how to go and how far to go.
I think, that this question is much to great to solve it in one step ...

Member 13032047 2-Mar-17 15:41pm

Thanks Ralf, if I'm understanding you right I create a dialog that can be filled as a list (by user?) and then use the scrollable list to display images (ListBox?)? The ImageList object achieves this, but only preselected images at design time? Can this list be programmed to allow the user to select images/photos through OpenFileDialog, populate the list automatically with random user selected images and then open the multiple images in separate PB's?

Ralf Meier 3-Mar-17 4:17am

Hi,
at first : I agree with Garth again - this is not an easy project and it needs a lot of energy (primary delivered by you).

My suggestion based on the way I would realize it - and it would work at designtime but also at runtime - that depends only on the way you build and use it ...
Everything what you have seen anywhere could also be build by you (if you want to do it).

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When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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