ListView column auto sizing

Question

Let\'s say I have the following ListView:

Answer 1

<ListView ScrollViewer.VerticalScrollBarVisibility="Auto" Name="someList">
  <ListView.View>
    <GridView>
      <GridViewColumn Width={Binding ElementName=someList, Path=ActualWidth/3} Header="Something" DisplayMemberBinding="{Binding Path=ShortText}" />
      <GridViewColumn  Width={Binding ElementName=someList, Path=ActualWidth/3} Header="Description" DisplayMemberBinding="{Binding Path=VeryLongTextWithCRs}" />
      <GridViewColumn  Width={Binding ElementName=someList, Path=ActualWidth/3} Header="Something Else" DisplayMemberBinding="{Binding Path=AnotherShortText}" />
    </GridView>
  </ListView.View>
</ListView>

Answer 2

This works for me, toggling the Width to ActualWidth and then back to NaN for any columns that don't have widths explicitly set. This will only work if the listview columns do not contain controls. I usually call this after data in the list has changed.

Public Shared Sub AutoResizeListView(lst As Windows.Controls.ListView)
    Dim gv = DirectCast(lst.View, Windows.Controls.GridView)
    For Each gvc In gv.Columns
        If Double.IsNaN(gvc.Width) Then
            gvc.Width = gvc.ActualWidth
            gvc.Width = Double.NaN
        End If
    Next
End Sub