prevent listview to lose selected item

Question

I\'m currently working on a listview in winform c# and everytime I click on an empty space on the listview, the selected item is lost.

Answer 1

I know that question asked 10 years ago. But I face the same problem and found a simple and elegant solution just now and sincerely want to share it.

There is a code (in VB.NET but its no big problem to write the same in C#):

Public Class SettingsBox ' Form that contains ListView (lvScreen)

    Private nScreenTracer As Integer
    Private nSelectedScreen As Integer

    Private Sub lvScreen_ItemSelectionChanged(sender As Object,
                                              e As ListViewItemSelectionChangedEventArgs) Handles lvScreen.ItemSelectionChanged
        If e.IsSelected Then nScreenTracer = e.Item.Index
    End Sub

    Private Sub lvScreen_MouseDown(sender As Object,
                                   e As MouseEventArgs) Handles lvScreen.MouseDown
        nScreenTracer = -1
    End Sub

    Private Sub lvScreen_MouseUp(sender As Object,
                                 e As MouseEventArgs) Handles lvScreen.MouseUp
        If nScreenTracer = -1 Then
            lvScreen.SelectedIndices.Add(nSelectedScreen)
        Else
            nSelectedScreen = nScreenTracer
        End If
    End Sub

End Class

This solution works for a single item selection but also can be simply redesigned with List(Of Integer) for multi-select