Datagridview 列单击/排序答案

【问题标题】：Datagridview Column Click/SortDatagridview 列单击/排序
【发布时间】：2013-07-06 11:17:48
【问题描述】：

大家都知道，如果有人单击列标题，它将进行排序。但是，是否有可能在它们排序后做某事。就像它按升序排序一样，msgbox 会提示您按升序排序。我想知道它是哪个datagridevent。如果可能的话，如何判断列是否已排序的任何提示？我找到了这个链接，但它实际上是 Web 窗体，我需要在 Windows 窗体中执行它有什么想法吗？

Datagridview column sorting when clicking on the column header

【问题讨论】：

标签： vb.net datagridview columnsorting

【解决方案1】：

  Private Sub dataGridView1_ColumnHeaderMouseClick(ByVal sender As Object, _
        ByVal e As DataGridViewCellMouseEventArgs) _
        Handles dataGridView1.ColumnHeaderMouseClick

        Dim newColumn As DataGridViewColumn = _
            dataGridView1.Columns(e.ColumnIndex)
        Dim oldColumn As DataGridViewColumn = dataGridView1.SortedColumn
        Dim direction As ListSortDirection

        ' If oldColumn is null, then the DataGridView is not currently sorted. 
        If oldColumn IsNot Nothing Then 

            ' Sort the same column again, reversing the SortOrder. 
            If oldColumn Is newColumn AndAlso dataGridView1.SortOrder = _
                SortOrder.Ascending Then
                direction = ListSortDirection.Descending
' Msgbox HERE
            Else 

                ' Sort a new column and remove the old SortGlyph.
                direction = ListSortDirection.Ascending
                oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None
               ' Msgbox HERE
            End If 
        Else
            direction = ListSortDirection.Ascending
' Msgbox HERE
        End If 

        ' Sort the selected column.
        dataGridView1.Sort(newColumn, direction)
        If direction = ListSortDirection.Ascending Then
            newColumn.HeaderCell.SortGlyphDirection = SortOrder.Ascending
        Else
            newColumn.HeaderCell.SortGlyphDirection = SortOrder.Descending
        End If 

    End Sub 

    Private Sub dataGridView1_DataBindingComplete(ByVal sender As Object, _
        ByVal e As DataGridViewBindingCompleteEventArgs) _
        Handles dataGridView1.DataBindingComplete

        ' Put each of the columns into programmatic sort mode. 
        For Each column As DataGridViewColumn In dataGridView1.Columns
            column.SortMode = DataGridViewColumnSortMode.Programmatic
        Next 
    End Sub

来源：MSDN

【讨论】：

我需要能够排序，但是我动态创建了DataGridView1，所以我不能将代码放在任何地方，因为网格还不存在？
非常感谢。你为我节省了太多时间和头痛:)

【解决方案2】：

  If _Data_Table.Rows.Count > 0 Then
        datagridview.DataSource = _Data_Table


        datagridview.Sort(grd_Cadastro.Columns("Your column name"), System.ComponentModel.ListSortDirection.Descending)


        datagridview.AutoResizeColumns()
        datagridview.ClearSelection()



    Else
        datagridview.DataSource = Nothing
    End If

【讨论】：