vb.net 如何知道列表框是否为空
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How To Know If the listbox is empty
提问by NewProg
sir how can i know if my listbox is empty or not?
先生，我怎么知道我的列表框是否为空？
i dont really have an idea for that. i'd try this but its wrong if listbox1.items = "" end if
我真的没有这个想法。我会尝试这个，但如果 listbox1.items = "" end if 是错误的
thank you
谢谢你
回答by pg0xC
There is a property ListBox.Items and you should try if Count is greater than 0 example:
有一个 ListBox.Items 属性，如果 Count 大于 0，您应该尝试：
If ListBox1.Items.Count > 0 Then
YOURCODE
END IF
You should always use msdn library to check simple things like that. For example link to ListBox documentation is under https://msdn.microsoft.com/en-us/library/system.windows.forms.listbox(v=vs.110).aspx
您应该始终使用 msdn 库来检查诸如此类的简单事情。例如，ListBox 文档的链接位于https://msdn.microsoft.com/en-us/library/system.windows.forms.listbox(v=vs.110).aspx
