vb.net 禁用组合框列表
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Disable combo box list
提问by alwaysVBNET
I want to disable a combo box dropdown list from showing in VB.NET and then enable it. How can I do this? The default value of the cbo box should be enabled for typing. Thanks
我想禁用组合框下拉列表在 VB.NET 中显示，然后启用它。我怎样才能做到这一点？应启用 cbo 框的默认值以进行键入。谢谢
回答by fahim baxi
After Searching for same to disable combo box in vb .net cant find good answer which help... so i tried some thing like this
在 vb .net 中搜索相同的以禁用组合框后找不到好的答案，这有帮助......所以我尝试了一些这样的事情
1st thing to do while disabling
禁用时要做的第一件事
combobox1.enabled=false
combobox1.beginupdate
2nd thing to do while enabling
启用时要做的第二件事
combobox1.enabled=true
combobox1.endupdate
its looks simple and i dont found any problem but i have doubt may it effect any excecution speen or other object
它看起来很简单，我没有发现任何问题，但我怀疑它是否会影响任何执行速度或其他对象
回答by peter
Try using dropdownstyle, simple can be used to remove list by manually closing the list in designer, then u can switch between dropdown and simple to achieve what you need.
尝试使用 dropdownstyle，simple 可以通过在设计器中手动关闭列表来删除列表，然后您可以在 dropdown 和 simple 之间切换以实现您的需要。
回答by phadaphunk
I want to disable a combo box dropdown list from showing in VB.NET and then enable it.
我想禁用组合框下拉列表在 VB.NET 中显示，然后启用它。
Ok, use the .Visibleproperty....
好的，使用.Visible属性....
The default value of the cbo box should be enabled for typing
应启用 cbo 框的默认值以进行键入
Oh.... then.
哦……那么。
The bad news.
坏消息。
You can't.
你不能。
The good news.
好消息。
You simply put a textbox on top of the combobox. When the dropdown should be disable, make the combobox invisible and show the textbox.
您只需在组合框顶部放置一个文本框。当下拉菜单应该被禁用时，使组合框不可见并显示文本框。
'Goodbye Combo
Private Sub HideComboButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles HideComboButton.Click
comboBox.Visible = False
txtBox.Visible = True
End Sub
'Hello Combo
Private Sub ShowComboButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowComboButton.Click
comboBox.Visible = True
txtBox.Visible = False
End Sub
回答by Manny265
Try using the Enabled method eg comboBox1.Enabled = False
Tellme how that works out for you
尝试使用 Enabled 方法，例如comboBox1.Enabled = False
Tellme 如何为您工作
