Sorting Columns in Listview

[SThornton]

Hi,

I would like to add the functionality of sorting by cliking on the Headings in my ListView. Is this possible?

Does the control take care of this for you? Do you have to code it? How?

[Athley]

You can set the Sorting property and then use the Sort method to sort the first column, ascending or descending, if you want more than that you instead have to create you own comparer and set the ListViewItemSorter. If you want an example I created a Comparer to sort dates in any column...

Class CompareByDate
    Implements IComparer

    Dim index As Integer

    Sub New(ByVal subitemIndex As Integer)
        Me.index = subitemIndex
    End Sub

    Function Compare(ByVal x As Object, ByVal y As Object) As Integer _
        Implements System.Collections.IComparer.Compare
        Dim item1 As ListViewItem = CType(x, ListViewItem)
        Dim item2 As ListViewItem = CType(y, ListViewItem)
        Return Date.Compare(Date.Parse(item1.SubItems(index).Text), Date.Parse(item2.SubItems(index).Text))
    End Function

End Class

And to use it....

ListView1.ListViewItemSorter = New CompareByDate(0)

[SThornton]

Thankyou,

I have found a MSDN article entitled:

Sorting ListView Items by Column Using Windows Forms

That explains it pretty well, including code on how to sort by date.

Thanks,