[2005] scan pc for bitmaps and store in imagelist?

well here is wat i want to do.

make my program scan for .bmp's and if it finds one it checks if its alrdy in the imagelist1 and if its not then it adds it. now my only problem is checking if the bmp is in the imagelist1. how would i do this? and make it fast?

Unless you visit the same file twice how can the same image already be in the ImageList? If you mean that there may be two copies of the same image in the file system then you'd have to compare either pixels or bytes of the current image to all images already in the collection. There's no way to make that genuinely fast that I'm aware of. I'd think the thing to do would be to simply add every image and if the user finds that they have duplicates because they had duplicates on their disc then let them remove them.

VB Code:

Public Class Form1
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        For Each iFile As String In IO.Directory.GetFiles("C:\Documents and Settings\Name\Desktop")
            If IO.Path.GetExtension(iFile) = ".gif" AndAlso AlreadyImage(iFile) = False Then
                ImageList1.Images.Add(iFile, New Bitmap(iFile))
            End If
        Next
    End Sub
 
    Private Function AlreadyImage(ByVal Picture As String) As Boolean
        Dim tPic As New Bitmap(Picture)
        For Each Item As String In ImageList1.Images.Keys
            Dim MyPic As New Bitmap(Item)
            If MyPic.GetPixel(MyPic.Width - 1, MyPic.Height - 1) = tPic.GetPixel(tPic.Width - 1, tPic.Height - 1) Then
                Return True
            End If
        Next
    End Function
End Class

If someone has an actual way with the imagelist please post, I cannot figure it out.

Quote:

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Originally Posted by jmcilhinney

Unless you visit the same file twice how can the same image already be in the ImageList? If you mean that there may be two copies of the same image in the file system then you'd have to compare either pixels or bytes of the current image to all images already in the collection. There's no way to make that genuinely fast that I'm aware of. I'd think the thing to do would be to simply add every image and if the user finds that they have duplicates because they had duplicates on their disc then let them remove them.

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well im making a program to get and display every single file icon. thats y i dont want them added twice.

what all tools should be added?

if u want to collect the icons of all type of files exists on the HDD, then it's easy ..

If Not ImageList1.Images.ContainsKey(fileExtension) Then
ImageList1.Images.Add(fileExtension,Icon.ExtractAssociatedIcon(filePath).ToBitmap)
End If

Scanning for BMP files isn't going to get you any icons. They are not related. Are you saying that you want to get all the file type icons in use on your machine or every ICO file or what? Just like for the BMPs, just because two icons look the same doesn't make them the same icon. You'd still have to do a pixel by pixel comparison. Don't forget also that ICO files can contain more than one icon, plus you also have ICL files, which can contain multiple sets of multiple icons.