DataGridView Selected Row Move UP and DOWN

Question

How can I allow selected rows in a DataGridView (DGV) to be moved up or down. I have done this before with a ListView. Unfortunetly, for me, replacing the DGV is not an opt

Answer 1

data bound solution with multi-selection support, use SharpDevelop 4.4 to convert to C#.

Sub MoveSelectionUp(dgv As DataGridView)
    If dgv.CurrentCell Is Nothing Then Exit Sub
    dgv.CurrentCell.OwningRow.Selected = True
    Dim items = DirectCast(dgv.DataSource, BindingSource).List
    Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
    Dim indexAbove = selectedIndices(0) - 1
    If indexAbove = -1 Then Exit Sub
    Dim itemAbove = items(indexAbove)
    items.RemoveAt(indexAbove)
    Dim indexLastItem = selectedIndices(selectedIndices.Count - 1)

    If indexLastItem = items.Count Then
        items.Add(itemAbove)
    Else
        items.Insert(indexLastItem + 1, itemAbove)
    End If
End Sub


Sub MoveSelectionDown(dgv As DataGridView)
    If dgv.CurrentCell Is Nothing Then Exit Sub
    dgv.CurrentCell.OwningRow.Selected = True
    Dim items = DirectCast(dgv.DataSource, BindingSource).List
    Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
    Dim indexBelow = selectedIndices(selectedIndices.Count - 1) + 1
    If indexBelow >= items.Count Then Exit Sub
    Dim itemBelow = items(indexBelow)
    items.RemoveAt(indexBelow)
    Dim indexAbove = selectedIndices(0) - 1
    items.Insert(indexAbove + 1, itemBelow)
End Sub