[RESOLVED] Simple Image Gallery in VB 2010

[LittleCasino]

Hi,

First off, I am pretty useless at programming as I am quite new to it but have to do a computing project for college. Although it won't get me any extra marks, I'm wanting to add an image gallery so that he user can upload an image so that multiple images can be seen on one page.

After searching the internet, I found this link which is pretty much the perfect thing that I want. http://www.authorcode.com/image-gallery-in-vb-net/

I have tried to follow these instructions but many errors have come up which I don't know how to fix. I have included the screenshots of the errors below.



If anyone has any ideas how to fix these errors or any alternate methods, I would be very grateful if you could give me some advice.

Thanks in advance

[.paul.]

Post your code + details of errors + which line the error refers to

[kaliman79912]

Screenshot is too small, cant read anything

[.paul.]

When posting code use [Code]'your code here[/Code] tags, + it'll format like this:

'your code here

[LittleCasino]

Not sure if this will look right but here goes. I have tried to underline where all the errors have appeared.
This is the code for Form 1 ............

'Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim dlg As New FolderBrowserDialog
        If dlg.ShowDialog = DialogResult.OK Then
            AuthorCodeImageGalleryVB1.Directorypath = dlg.SelectedPath
            TextBox1.Text = dlg.SelectedPath
        End If
    End Sub
End Class

This is the code for the User Control

'Public Class AuthorCodeImageGalleryVB
    Dim CtrlWidth As Integer
    Dim CtrlHeight As Integer
    Dim PicWidth As Integer
    Dim PicHeight As Integer
    Dim XLocation As Integer
    Dim YLocation As Integer

    Private Sub AuthorCodeImageGalleryVB_Resize(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Resize
        CtrlHeight = Me.Height
        CtrlWidth = Me.Width
    End Sub
    Private _Directory_Path As String
    Public Property Directorypath() As String
        Get
            Return _Directory_Path
        End Get
        Set(ByVal value As String)

            _Directory_Path = value
            XLocation = 25
            YLocation = 25
            PicWidth = 117
            PicHeight = 109
            CreateGallery()
        End Set
    End Property
    Dim i As Integer = 0

    Private Sub DrawPictureBox(ByVal _filename As String, ByVal _displayname As String)
        Dim Pic1 As New PictureBox
        Pic1.Location = New System.Drawing.Point(XLocation, YLocation)
        XLocation = XLocation + PicWidth + 20
        If XLocation + PicWidth >= CtrlWidth Then
            XLocation = 25
            YLocation = YLocation + PicHeight + 20
        End If
        Pic1.Name = "PictureBox" & i
        i += 1
        Pic1.Size = New System.Drawing.Size(PicWidth, PicHeight)
        Pic1.TabIndex = 0
        Pic1.TabStop = False
        Pic1.BorderStyle = BorderStyle.Fixed3D
        Me.ToolTip1.SetToolTip(Pic1, _displayname)
        AddHandler Pic1.MouseEnter, AddressOf Pic1_MouseEnter
        AddHandler Pic1.MouseLeave, AddressOf Pic1_MouseLeave
        Me.Controls.Add(Pic1)
        Pic1.Image = Image.FromFile(_filename)
        Pic1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage
    End Sub

    Private Sub CreateGallery()
        i = 0
        RemoveControls()
        If Directorypath IsNot Nothing Then
            Dim di As New IO.DirectoryInfo(Directorypath)
            Dim diar1 As IO.FileInfo() = di.GetFiles("*.jpg").Concat(di.GetFiles("*.bmp")).Concat(di.GetFiles("*.png")).Concat(di.GetFiles("*.gif")).ToArray
            Dim dra As IO.FileInfo
            For Each dra In diar1
                DrawPictureBox(dra.FullName, dra.Name)
            Next
        End If
    End Sub

    Private Sub Pic1_MouseEnter(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim Pic As PictureBox
        Pic = sender
        Pic.BorderStyle = BorderStyle.FixedSingle
    End Sub

    Private Sub Pic1_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim Pic As PictureBox
        Pic = sender
        Pic.BorderStyle = BorderStyle.Fixed3D
    End Sub

    Private Sub RemoveControls()
Again:  For Each ctrl As Control In Me.Controls
            If TypeOf (ctrl) Is PictureBox Then
                Me.Controls.Remove(ctrl)
            End If
        Next
        If Me.Controls.Count > 0 Then
            GoTo Again
        End If
    End Sub
End Class

These are the errors that have appeared (sorry they will be really hard to understand as I'm copy and pasting them)

Error 1 'AuthorCodeImageGalleryVB1' is not declared. It may be inaccessible due to its protection level. Form1.vb 5 13 WindowsApplication1

Error 2 'gt' is not declared. It may be inaccessible due to its protection level. UserControl1.vb 33 34 WindowsApplication1

Error 3 Character is not valid. UserControl1.vb 33 36 WindowsApplication1

Error 4 'amp' is not declared. It may be inaccessible due to its protection level. UserControl1.vb 37 35 WindowsApplication1

Error 5 Character is not valid. UserControl1.vb 37 38 WindowsApplication1

Error 6 'ToolTip1' is not a member of 'WindowsApplication1.AuthorCodeImageGalleryVB'. UserControl1.vb 43 9 WindowsApplication1

Error 7 'gt' is not declared. It may be inaccessible due to its protection level. UserControl1.vb 79 31 WindowsApplication1

Error 8 Character is not valid. UserControl1.vb 79 33 WindowsApplication1

[kaliman79912]

The first error is clear, there is no 'AuthorCodeImageGalleryVB1' , what is it that you want to reference by that name?
line 33 of your User Control is strange, shet does >= mean? apparently gt has not been declared and it is mixed with other characters that have no place there.
Same in 37... & I what does that mean?
It does not appear to by a typo, you have that 3 times, line 79 again > ????

[.paul.]

1/ AuthorCodeImageGalleryVB1 is the name of the usercontrol instance on the form
2/ change this:

If XLocation + PicWidth >= CtrlWidth Then

to this:

If XLocation + PicWidth >= CtrlWidth Then

3/ change this:

Pic1.Name = "PictureBox" & i

to this:

Pic1.Name = "PictureBox" & i.tostring

4/ see #3

5/ see #3

6/ add a ToolTip component to your usercontrol (from the toolbox)

7/ change this:

If Me.Controls.Count > 0 Then

to this:

If Me.Controls.Count > 0 Then

8/ see #7

[kaliman79912]

Why is that .paul.? what does > mean?

[LittleCasino]

Kaliman, like I said, I'm rubbish at all this programming so the code I sent is all copy and pasted from the link that I sent in the first post.

I would have thought that 'AuthorCodeImageGallery1' should be 'AuthorCodeImageGalleryVB' (without the 1) as this is the name of the User Control. However when I change this to this 'AuthorCodeImageGalleryVB.Directorypath', the whole thing is underlined in blue with this error appearing.....

'Error 1 Reference to a non-shared member requires an object reference. Form1.vb 5 13 WindowsApplication1'


Also, I would agree that 'gt;' and amp; seem strange but I presumed there was a purpose to this even though I too don't understand what it means. If you take a look at the link I sent, it might explain what I'm doing wrong better than a useless programmer like me.

Thanks

[.paul.]

Why is that .paul.? what does > mean?

it's html markup for >

[.paul.]

AuthorCodeImageGalleryVB1 is the name of an instance of AuthorCodeImageGalleryVB (a Type) on your form

[LittleCasino]

.Paul.

Thanks so much, that has really helped, I've done everything you said and the only error that still appears is the one to do with 'AuthorCodeImageGalleryVB1'. Am I meant to change this to something else? I've tried changing it to 'AuthorCodeImageGalleryVB' but a different error occurs when I drop the '1' saying......

'Error 1 Reference to a non-shared member requires an object reference. Form1.vb 5 13 WindowsApplication1'

[.paul.]

comment that line out + start, then stop your project. remove the comment, goto form view, then at the top of your toolbox, you'll find the AuthorCodeImageGalleryVB control. add one to your form + rebuild (run) your project

[paulg4ije]

.Paul.

Thanks so much, that has really helped, I've done everything you said and the only error that still appears is the one to do with 'AuthorCodeImageGalleryVB1'. Am I meant to change this to something else? I've tried changing it to 'AuthorCodeImageGalleryVB' but a different error occurs when I drop the '1' saying......

'Error 1 Reference to a non-shared member requires an object reference. Form1.vb 5 13 WindowsApplication1'

Just add an instance of the control on Form 1. Try this:

Public Class Form1

Dim AuthorCodeImageGalleryVB1 as new AuthorCodeImageGalleryVB

' Rest of Form1 code starts here ...

[LittleCasino]

Oooooh, I see what you mean, I didn't realise you had to drag it into your form. Are you meant to only put one in or are you meant to drag multiple user controls in to have more than one image?

At the moment, I can add an image but when I add another image, it just replaces the previous one.

[.paul.]

I haven't tried it, but by the look of the code, it should display all of the images in the folder you select.

[LittleCasino]

.Paul.

Aha, I made the user control a bit bigger and it has included all the images.

Thanks so much for the help Paul, I've been trying to do this for weeks!!! I really appreciate it!!!! Thank you! Thank you! Thank you!!!!!!!

[.paul.]

no problem. glad I could help...

[ident]

Do you not agree handing in course work you can't understand, did not write will actually look worse on you?