On button click fill next picture box - vb.net

Question

I'm writing a little program in VB and I'm stuck at a point where I want to add a specific image on a button click to a picturebox. The tricky part for me is, that each time I click the button, I want the image (from same location, e.g "C:\Test.jpg") to appear in the next picture box.
I tried to use a variable in the picturebox name and increase it on each click but it kept giving errors (must have used it wrong, obviously).
So to make it more clear:
I click Button1
image from location "C:\Test.jpg" appears in PictureBox1
I click Button1 again
image from location "C:\Test.jpg" appears in PictureBox2
etc.
As you can imagine, I'm not an expert in VB.NET so if you good people have any suggestions, thank you in advance :D
Vahur

Answer 1

Here's another approach using Controls.Find():
Public Class Form1
Private counter As Integer = 0
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
counter = counter + 1
Dim matches() As Control = Me.Controls.Find("PictureBox" & counter, True)
If matches.Length > 0 AndAlso TypeOf matches(0) Is PictureBox Then
Dim pb As PictureBox = DirectCast(matches(0), PictureBox)
Using fs As New System.IO.FileStream("C:\Test.jpg", IO.FileMode.Open)
pb.Image = New Bitmap(Image.FromStream(fs))
End Using
End If
End Sub
End Class

Answer 2

Form level:
Private mPList As New List(of PictureBox)
Private pIndex as Integer = 0
Form Shown:
With mPlist
.Add(PictureBox1)
.Add(PictureBox2)
... continue as needed
Ens With
Button Click
' remove image from last picbox (????)
mPlist(pIndex).Image = Nothing
pIndex += 1
if pIndex > mPlist.Count-1 then pIndex = 0
mPlist(pIndex).Image.FromFile(filename)

Answer 3

The issue, I'm sure, is that you are trying to figure out how to increment a number and get a handle of the picture box to set the picture on. I am going to make a couple assumptions here, in that you are making a card game and you will have a set number of players. You have a couple options:
For the number, you can either set a PRIVATE variable in your form for holding the next number and on each button click, increment it by 1.
Private Player1NextImage as byte = 1
Private Player2NextImage as byte = 1
Private Player3NextImage as byte = 1
Private Player4NextImage as byte = 1
In the button click, for the specific player, you would want to get their picturebox that is next:
You can either keep the list of pictureboxes in a list, as show by #Plutonix, or you can just use a SELECT CASE statement and hardcode the pictureboxes.
Select Case Player1NextImage
Case 1
Player1Card1PictureBox.Image = ...
Case 2
Player1Card2PictureBox.Image = ...
Etc...
'Then increment the number
Player1NextImage += 1

Answer 4

There are multiple ways to do this. Let's say your variable is called Counter, and (assuming) that the parent of your pictureboxes is the main form / control, add this to your button click event:
Counter += 1
Dim Pic As PictureBox = CType(Me.Controls("PictureBox" & Counter.ToString), PictureBox)
If Pic Is Nothing Then
MsgBox("Could not find PictureBox")
Else
Pic.Image = Image.FromFile("C:\Test.jpg")
End If