我有一个下拉列表和一个文本框，如果我想一次只输入一个，我应该在vb.net中做什么 [英] i have a dropdown and a textbox,if i want only one to be entered at a time what should i do in vb.net

问题描述

我有一个下拉菜单和一个文本框，如果选择了下拉菜单，则应禁用文本框，如果文本框具有值，则应在vb.net中禁用下拉菜单.有人可以帮我吗?

I have a dropdown and a textbox, if dropdown is selected then textbox should be disabled and if textbox has value then dropdown should be disabled in vb.net. Can anyone please help me?

推荐答案

只需将其作为更改事件来应用.

Just apply it as a change event.

Private Sub ComboBox1_Change()
If TextBox1 = "" Then TextBox1.Enabled = False
End Sub
Private Sub TextBox1_Change()
If ComboBox1 = "" Then ComboBox1.Enabled = False
End Sub

作为一个非常基本的示例(无双关语).

As a very basic example (no pun intended).

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