将对象添加到列表时，绑定到列表的DataGridView不会反映更改 [英] DataGridView bound to List does not reflect changes when adding objects to the List

问题描述

我想知道要使DataGridView像预期的那样需要做什么：

I wonder what I need to do in order to make the DataGridView behave as expected:

我确实有 List< ioChannel> （命名为 myList ）类型的对象：

I do have a List<ioChannel> (named myList) of objects of this type:

public class ioChannel
{
    public string Name { get; set; }
    public int Id { get; set; }
}

我试图将DataGridView绑定到此列表：

I tried to bind the DataGridView to this list:

bs = new BindingSource { DataSource = myList };
dgvChannels.DataSource = bs;

现在，我创建了一个向 myList ：

Now I created a button that adds elements to myList:

private void btAddChannel_Click(object sender, EventArgs e)
{
    myList.Add(new ioChannel() { Id = myList.Count, Name = "My Channel" });
}

当我按下按钮时，列表中会显示新的 ioChannel ，但 dgvChannels 不会添加任何行。

When I press the button, my List gets populated with new ioChannel's, but the dgvChannels does not add any rows. What do I need to do in order to make this happen?

BTW：当 myList 填充一些 ioChannel ，然后将BindingSource分配为DataSource，该获取将正确显示在网格中。

BTW: When myList gets populated with some ioChannel´s before assigning the BindingSource as DataSource, the get shown properly in the grid.

推荐答案

正如@Loathing评论的那样， BindingList 也为我工作。它将如何工作：

As @Loathing commented BindingList worked for me too. How it will work :

BindingList<ioChannel> myList = new BindingList<ioChannel>();
dgvChannels.DataSource = myList;

BindingList具有通知列表更改的事件。以便datagridview可以通知自己重绘，检查这个。有关更多信息，请访问 msdn 。

BindingList has event that notifies changes in list. So that datagridview can notified to redraw itself, check this. For more information visit msdn.

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