1
我想'交换'两个单元格的内容及其映射。为此,我需要拖放对单元格的引用,而不是字符串值本身。然后,我可以使用此引用来更新字典并获取该值。它允许我进行交换,因为我将引用旧单元格以在其中添加所需的值。拖放一个对象引用VB.Net
我遇到的问题是我不知道如何通过单元格引用:
Private Sub DataGridView1_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseDown
If e.Button = MouseButtons.Left Then
DataGridView1.DoDragDrop(DataGridView1.CurrentCell, DragDropEffects.Copy)
End If
End Sub
,并在下拉事件:
Private Sub DataGridView1_DragDrop(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles DataGridView1.DragDrop
'Problem is here -->'Dim copyedFromCell As DataGridViewCell = DirectCast(e.Data(), DataGridViewCell)**
Dim copyedFromKey As String = GetMappingForCell(copyedFromCell)
Dim thisKey As String = GetMappingForCell(DataGridView1.CurrentCell)
Dim copyedFromValue As String = copyedFromCell.Value
Dim thisValue As String = DataGridView1.CurrentCell.Value
mappings(copyedFromKey) = DataGridView1.CurrentCell
mappings(thisKey) = copyedFromCell
DataGridView1.CurrentCell.Value = copyedFromValue
copyedFromCell.Value = thisValue
End Sub
是什么,我试图做可能吗?我完全打破它了吗?谢谢:)
当我从当前单元格拖动时,它会在鼠标单击时被选中,但是当我想要放在另一行的其他位置时,目标单元格不会被选中,因此当前单元格不会保留其引用我想更新它。 有什么想法? – mustafabar 2009-08-29 07:35:04