我有一個DataGridView與三個DataGridViewComboBoxColumns。默認情況下,它們的DropDownStyle是DropDownList,但我希望它是DropDown。我可以在DataGridView的EditingControlShowing方法中將類型更改爲DropDown,但是這是在程序啓動並選擇ComboBox之後。我已經在DataGridView的CellValidating方法中有代碼,允許我爲這些ComboBoxColumns添加新值,但是如果不雙擊它,我就無法編輯ComboBox。以下是一些當前引發InvalidCastException的代碼。在啓動時設置DataGridViewComboBoxColumn的DropDownStyle?
Dim column As New DataGridViewComboBoxColumn()
column.Name = "Name"
column.HeaderText = "Name"
column.DisplayMember = "Name"
column.ValueMember = "Name"
column.DataSource = DataTable
DataGridView1.Columns.Insert(15, column)
For i = 0 To column.Items.Count - 1
Dim cb As ComboBox = CType(column.Items(i), ComboBox)
If (cb IsNot Nothing) Then
cb.DropDownStyle = ComboBoxStyle.DropDown
End If
Next
我已經實現了類似的東西。我將ComboBoxColumn的DisplayStyle設置爲Nothing,並且它看起來更好,儘管它隱藏了下拉箭頭,直到您單擊單元格。你的方法是否仍然顯示下拉箭頭? –