如何更新列表框? [英] How to update a listbox?

问题描述

一直在尝试找到一些代码，这些代码将更新Windows窗体应用程序中的列表框，但是没有运气.

表单加载时，此代码将填充列表，效果很好:

Have been trying to find a bit of code that will update a listbox in a windows form application with no luck.

When form loads this code populates the list, which works just fine:

private void Form1_Load(object sender, EventArgs e)
      {
          lbItemsList.DataSource = shoppingBasket.OrderItems;
      }

列表框"lbItemsList"绑定到一个名为"shoppingBasket"的类列表.当我将新项目添加到列表中，然后尝试再次运行同一行时，什么也没有发生.如何更新列表框?

我已经尝试过.Refresh()和.Update()方法，但它们都不起作用.

The listbox "lbItemsList" is binded to a class list called "shoppingBasket". When I add new items to the list then try to run the same line again, nothing happens. How can I update the listbox?

I''ve already tried the .Refresh() and .Update() methods and none of them work.

推荐答案

尝试此代码

try this code

lbItemsList.BeginUpdate();
lbItemsList.DataSource = null;
lbItemsList.DataSource = shoppingBasket.OrderItems;
lbItemsList.EndUpdate();

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