如何刷新ListBox的项目? [英] How refresh items of a ListBox?

问题描述

可能重复:
C#强制ListBox更新元素

Possible Duplicate:
C# Force ListBox to update elements

让我们考虑一下这小段代码:

Let's consider this small piece of code:

listbox.DataSource = base_items;
listbox.DisplayMember = "Name";
// ... a bit later in the program
base_items.Add(  new Base_Item("Unnamed")  );

从这一点来看，如何使列表框更新其项目?我看到更新的唯一方法是关闭窗口，然后重新加载.

From this point, how do I do to make the listbox update its items? The only way for me to see the update is to close the window and reload it again.

推荐答案

只需删除并添加数据绑定即可. 您可以创建可以在首次加载时以及添加新项目时使用的方法:

Just remove and add databinding again. You can create method that can be used on first load and when new item was added:

    void BindData()
    {
        listBox.DataSource = null;
        listBox.DataSource = base_items;
        listbox.DisplayMember = "Name";
    }

这是添加新项和刷新列表框的代码:

So here is the code for adding new item and refreshing listbox:

    base_items.Add(new Base_Item("Unnamed"));
    BindData();

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