列表查看计数事件？ [英] list view count event?

问题描述

我一直在搜索要使用的事件，同时在标签中显示列表视图中的项目总数。标签还可以，但我已经尝试了一系列事件。非工作。是否有任何建议的方法？

I have been searching for an event to use while displaying in a label the total count of items in my listview. The label is ok but i've tried a list of events. non are working. Are there any suggested methods?

推荐答案

没有从ListView添加/删除项目的事件。但是你可以做些什么...



您可以创建一个新的ListView控件，从ListView派生，并为AddItem和RemoveItem添加一个方法。在这些方法中，您将项目添加/删除到项目列表，并为ItemsChanged或类似的东西举起您自己的事件。



我道歉我不能发布代码来做到这一点，我不是很擅长VB。希望其他人可以给你一个有效的例子，它不需要太多代码就可以了。

There is no event for an item being added/removed from a ListView. But there is something you can do about it...

You can create a new ListView control, deriving from ListView, and add a method to it for AddItem and RemoveItem. In these methods, you add/remove the item to the Items list, and raise your own event for an ItemsChanged or something similiar.

I apologize that I can't post code to do this, I'm not very good in VB. Hopefully somebody else can give you a working example, it doesn't take much code to do it.

从工具箱创建一个计时器并将间隔设置为1000

在timer1的tick_event下

只需编写此代码

create a timer from toolbox and set interval to 1000
under the tick_event of the timer1
just write this code

Static x As Integer = 0
        If ListView1.Items.Count > x Then
            x += Val(ListView1.Items.Count - x)
        ElseIf ListView1.Items.Count < x Then
            x -= Val(x - ListView1.Items.Count)
        End If
        Label1.Text = x

请制作如果它能帮助你，请确保将此标记为已解决....快乐编码

please make sure you flag this as solved if it helped you....happy coding

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