在 DataGridView.ComboBoxColumn 触发选定值更改事件

Question

目前，当使用组合框在 DataGridViewColumn 中选择一个值时，用户必须单击该单元格才能通过 DataGridView 上的 CellValueChanged 事件刷新值。

我想要实现的是，只要在 ComboBox 中选择了一个值，就会触发刷新。

下面是我尝试做的，所以当下拉菜单是 opened/closed 时它会触发刷新，但它只在单击 ComboBox 并且下拉菜单可见时执行，而不是当一个值被选中时。

Private Sub PL_DGV_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles PL_DGV.EditingControlShowing
        Dim cb As ComboBox = TryCast(e.Control, ComboBox)
        If cb IsNot Nothing Then
            Dim editingComboBox As ComboBox = DirectCast(e.Control, ComboBox)

            RemoveHandler editingComboBox.SelectedIndexChanged,
                New EventHandler(AddressOf editingComboBox_SelectedIndexChanged)

            AddHandler editingComboBox.SelectedIndexChanged,
                New EventHandler(AddressOf editingComboBox_SelectedIndexChanged)
        End If

End Sub

Private Sub editingComboBox_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
    Dim dgvc As DataGridViewCell = TryCast(Me.PL_DGV.CurrentCell, DataGridViewCell)

    RefreshCarriage(dgvc.RowIndex)

End Sub

Answer 1

根据@jmcilhinney 的评论，我设法找到了一个在 C# 中涵盖此内容的线程：Thread here

阅读上述线程后我的代码：

Private Sub PL_DGV_CurrentCellDirtyStateChanged(ByVal sender As Object, ByVal e As EventArgs) Handles PL_DGV.CurrentCellDirtyStateChanged
            'My DGV Combo Box column is second within the grid therefore manually checking for index 1 column.      
            If PL_DGV.CurrentCell.ColumnIndex = 1 Then
                If PL_DGV.IsCurrentCellDirty Then
                    PL_DGV.CommitEdit(DataGridViewDataErrorContexts.Commit)
                End If
            End If
    End Sub

所以上面触发了 CellValueChanged 事件，我在其中添加了对 DGV ComboBox 列的另一个检查，因为我只需要运行编辑该列时的特定功能：

Private Sub PL_DGV_CellValueChanged(sender As Object, e As DataGridViewCellEventArgs) Handles PL_DGV.CellValueChanged
            If PL_DGV.CurrentCell.ColumnIndex = 1 Then
                    RefreshCarriage(e.RowIndex)
            End If
End Sub

再次感谢@jmcilhinney 的评论并引导我找到问题的解决方案。

在 DataGridView.ComboBoxColumn 触发选定值更改事件

Trigger selected value changed event on DataGridView.ComboBoxColumn

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datagridviewcombobox

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