SelectedIndex of a DataGridViewComboBoxCell？VB.NET

Question

如何设置SelectedIndex的DataGridViewComboBoxCell？

代码用项填充组合框，但我需要选择其中一个

我的守则：

 Dim cListItems As New System.Collections.Generic.List(Of Combobox_values)

                If ds.Tables("items_prices").Rows(0).Item("item_selldozen") > 0 Then
                    Dim item_selldozen As String = ds.Tables("items_prices").Rows(0).Item("item_selldozen")
                    cListItems.Add(New Combobox_values("Docena (" + item_selldozen + ")", item_selldozen))
                End If


                Dim dgvcbc As DataGridViewComboBoxCell = DirectCast(CType(main.ActiveMdiChild, discount_new_discount).discountitems_new_discount.Rows(last_row).Cells(3), DataGridViewComboBoxCell)

                dgvcbc.DataSource = cListItems 'Fill Remote Comboboxcell
                dgvcbc.DisplayMember = "Text"
                dgvcbc.ValueMember = "Value"

Answer 1

如果您的ComboBoxColumn中有一个DataGridView，并且您想知道组合框的所选索引是什么，那么您需要这样做：

1. 处理DataGridView的EditingControlShowing事件。在此事件处理程序中，检查当前列是否我们感兴趣。然后创建一个临时的ComboBox对象，并获得所选的索引：

Private Sub dataGridView1_EditingControlShowing(sender As Object, e As DataGridViewEditingControlShowingEventArgs)
    If dataGridView1.CurrentCell.ColumnIndex = 0 Then
        ' Check box column
        Dim comboBox As ComboBox = TryCast(e.Control, ComboBox)
        comboBox.SelectedIndexChanged += New EventHandler(AddressOf comboBox_SelectedIndexChanged)
    End If
End Sub


Private Sub comboBox_SelectedIndexChanged(sender As Object, e As EventArgs)
    Dim selectedIndex As Integer = DirectCast(sender, ComboBox).SelectedIndex
    MessageBox.Show("Selected Index = " & selectedIndex)
End Sub