1
我想'交換'兩個單元格的內容及其映射。爲此,我需要拖放對單元格的引用,而不是字符串值本身。然後,我可以使用此引用來更新字典並獲取該值。它允許我進行交換,因爲我將引用舊單元格以在其中添加所需的值。拖放一個對象引用VB.Net
我遇到的問題是我不知道如何通過單元格引用:
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
,並在下拉事件:
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
是什麼,我試圖做可能嗎?我完全打破它了嗎?謝謝:)
當我從當前單元格拖動時,它會在鼠標單擊時被選中,但是當我想要放在另一行的其他位置時,目標單元格不會被選中,因此當前單元格不會保留其引用我想更新它。 有什麼想法? – mustafabar 2009-08-29 07:35:04