CODEWITHSUNDEEP
vb.netimagelistobjectlistview
Failed_Noob
Failed_Noob

Reputation: 1357

How to use ObjectListView to show all the images in a imagelist?

How do I use a ObjectListView to show all the images in a image-list ? In the home-site of ObjectListView they have shown how to do this in C# (I am not that good with c# and delegates). But I can't get it to work in VB.net.

Upvotes: 0

Views: 2672

Answers (1)

Jay
Jay

Reputation: 6017

Here is a direct translation of their example:

Me.mainColumn.ImageGetter = Function(row As Object) Do
    Dim key As String = Me.GetImageKey(row)
    If Not Me.listView.LargeImageList.Images.ContainsKey(key) Then
        Dim smallImage As Image = Me.GetSmallImageFromStorage(key)
        Dim largeImage As Image = Me.GetLargeImageFromStorage(key)
        Me.listView.SmallImageList.Images.Add(key, smallImage)
        Me.listView.LargeImageList.Images.Add(key, largeImage)
    End If
    Return key
End Function

That will only work with the most recent version of VB.NET because it uses an inline function. You can alter it like this for older versions:

Create a function similar to:

Public Function GetImageFromList(row As Object) As String
        Dim key As String = Me.GetImageKey(row)
        If Not Me.listView.LargeImageList.Images.ContainsKey(key) Then
            Dim smallImage As Image = Me.GetSmallImageFromStorage(key)
            Dim largeImage As Image = Me.GetLargeImageFromStorage(key)
            Me.listView.SmallImageList.Images.Add(key, smallImage)
            Me.listView.LargeImageList.Images.Add(key, largeImage)
        End If
        Return key
End Function

And then set your image getter for the column to it like:

Me.mainColumn.ImageGetter = AddressOf GetImageFromList

Upvotes: 2

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