vb.net ListView表格控件任意列排序和增加排序小箭头

定义一个clsListviewSorter类：

Public Class clsListviewSorter ' Implements a comparer 
        Implements IComparer
        Private m_ColumnNumber As Integer
        Private m_SortOrder As SortOrder

        Public Sub New(ByVal column_number As Integer, ByVal sort_order As SortOrder)
            m_ColumnNumber = column_number
            m_SortOrder = sort_order
        End Sub

        ' Compare the items in the appropriate column
        Public Function Compare(ByVal x As Object, ByVal y As Object) As Integer Implements System.Collections.IComparer.Compare
            Dim item_x As ListViewItem = DirectCast(x, ListViewItem)
            Dim item_y As ListViewItem = DirectCast(y, ListViewItem)
            ' Get the sub-item values.
            Dim string_x As String
            If item_x.SubItems.Count <= m_ColumnNumber Then
                string_x = ""
            Else
                string_x = item_x.SubItems(m_ColumnNumber).Text
            End If
            Dim string_y As String
            If item_y.SubItems.Count <= m_ColumnNumber Then
                string_y = ""
            Else
                string_y = item_y.SubItems(m_ColumnNumber).Text
            End If
            ' Compare them.
            If m_SortOrder = SortOrder.Ascending Then
                If IsNumeric(string_x) And IsNumeric(string_y) Then
                    Return Val(string_x).CompareTo(Val(string_y))
                ElseIf IsDate(string_x) And IsDate(string_y) Then
                    Return DateTime.Parse(string_x).CompareTo(DateTime.Parse(string_y))
                Else
                    Return String.Compare(string_x, string_y)
                End If
            Else
                If IsNumeric(string_x) And IsNumeric(string_y) Then
                    Return Val(string_y).CompareTo(Val(string_x))
                ElseIf IsDate(string_x) And IsDate(string_y) Then
                    Return DateTime.Parse(string_y).CompareTo(DateTime.Parse(string_x))
                Else
                    Return String.Compare(string_y, string_x)
                End If
            End If
        End Function

    End Class

在窗体代码中ListView1.ColumnClick列标题单击事件：

Private m_SortingColumn As ColumnHeader  '排序的列
Private Sub Sort_ColumnClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ColumnClickEventArgs) Handles ListView1.ColumnClick()
        ' Get the new sorting column.
        Dim new_sorting_column As ColumnHeader = sender.Columns(e.Column)
        ' Figure out the new sorting order.
        Dim sort_order As System.Windows.Forms.SortOrder
        If m_SortingColumn Is Nothing Then
            ' New column. Sort ascending.
            sort_order = SortOrder.Ascending
        Else ' See if this is the same column.
            If new_sorting_column.Equals(m_SortingColumn) Then
                ' Same column. Switch the sort order.
                If m_SortingColumn.Text.EndsWith("  ▲") Then
                    sort_order = SortOrder.Descending
                Else
                    sort_order = SortOrder.Ascending
                End If
            Else
                ' New column. Sort ascending.
                sort_order = SortOrder.Ascending
            End If
            ' Remove the old sort indicator.
            m_SortingColumn.Text = m_SortingColumn.Text.Substring(0, m_SortingColumn.Text.Length - 3)
        End If
        ' Display the new sort order.
        m_SortingColumn = new_sorting_column
        If sort_order = SortOrder.Ascending Then
            m_SortingColumn.Text &= "  ▲"
        Else
            m_SortingColumn.Text &= "  ▼"
        End If
        ' Create a comparer.
        sender.ListViewItemSorter = New clsListviewSorter(e.Column, sort_order)
        ' Sort.
        sender.Sort()
    End Sub

这样鼠标点击列标题，会对该列排序，并显示一个三角箭头标记，排序结果也比较智能，不是完全的字符串排序，会根据该列内容的数据类型排序，例如：

原始数据	普通排序	智能排序
2	1	1
1	13	2
15	15	3
13	2	13
22	22	15
3	3	22