如何使用 ObjectListView 显示图像列表中的所有图像?在 ObjectListView 的主页中,他们展示了如何在 C# 中执行此操作(我对 c# 和委托不太擅长)。但我无法让它在 VB.net 中工作。
问问题
2507 次
1 回答
2
这是他们示例的直接翻译:
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
这仅适用于最新版本的 VB.NET,因为它使用内联函数。对于旧版本,您可以像这样更改它:
创建一个类似的函数:
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
然后将列的图像获取器设置为:
Me.mainColumn.ImageGetter = AddressOf GetImageFromList
于 2011-12-29T14:26:44.557 回答