문제

HI guys as you all know if someone clicks the column header it will sort. However is it possible to do something after they sort. Like if it sort ascending a msgbox would prompt out saying you sort ascending. I would like to know which datagridevent it is. If possible any tips of how to tell whether the column is sorted or not? i found this link but its actually Web Form i need to do it in windows form any ideas?

Datagridview column sorting when clicking on the column header

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해결책

  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

Source : MSDN

다른 팁

  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
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