Datagridview DatagridviewComboboxColumn编辑DataBound

Question

我有一个带有datagridviewcomboboxcolumn的datagridview，在其上启用了编辑。 只要没有为列设置datapropertyname，此方法就起作用。

当设置了datapropertyname且我在组合框中键入内容时，系统会建议该项目，但按ENTER键时，将再次选择先前选择的项目。

当在按回车键后未设置数据属性名称时，将选择建议的项目。

我的启用编辑的代码：

Private Sub DataGridView1_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
    If e.Control.GetType Is GetType(DataGridViewComboBoxEditingControl) Then
        Dim cb As ComboBox = TryCast(e.Control, ComboBox)
        If cb IsNot Nothing Then
            cb.DropDownStyle = ComboBoxStyle.DropDown
        End If
    End If
End Sub

Answer 1

Private Sub grdReceiving_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles grdReceiving.EditingControlShowing
    If e.Control.GetType Is GetType(DataGridViewComboBoxEditingControl) Then
        Dim cb As ComboBox = TryCast(e.Control, ComboBox)
        If cb IsNot Nothing Then
            cb.DropDownStyle = ComboBoxStyle.DropDown
        End If
    End If
End Sub
Private Sub grdReceiving_CellValidating(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles grdReceiving.CellValidating
    Select Case e.ColumnIndex
        Case 4
            Dim comboBoxColumn As DataGridViewComboBoxColumn = grdReceiving.Columns(4)
            If (e.ColumnIndex = comboBoxColumn.DisplayIndex) Then
                If (Not comboBoxColumn.Items.Contains(e.FormattedValue)) Then
                    comboBoxColumn.Items.Add(e.FormattedValue)
                End If
            End If
            grdReceiving.Rows(e.RowIndex).Cells(e.ColumnIndex).Value = e.FormattedValue
        Case 5
            Dim comboBoxColumn As DataGridViewComboBoxColumn = grdReceiving.Columns(5)
            If (e.ColumnIndex = comboBoxColumn.DisplayIndex) Then
                If (Not comboBoxColumn.Items.Contains(e.FormattedValue)) Then
                    comboBoxColumn.Items.Add(e.FormattedValue)
                End If
            End If
            grdReceiving.Rows(e.RowIndex).Cells(e.ColumnIndex).Value = e.FormattedValue
        Case 6
            Dim comboBoxColumn As DataGridViewComboBoxColumn = grdReceiving.Columns(6)
            If (e.ColumnIndex = comboBoxColumn.DisplayIndex) Then
                If (Not comboBoxColumn.Items.Contains(e.FormattedValue)) Then
                    comboBoxColumn.Items.Add(e.FormattedValue)
                End If
            End If
            grdReceiving.Rows(e.RowIndex).Cells(e.ColumnIndex).Value = e.FormattedValue
    End Select
End Sub