如何使用 ObservableCollection 类中的数据？
我正在用 C# 构建一个小程序。我是编程新手，似乎不明白如何做到这一点。 我有一个 ObservableCollection 类，我只能向其中添加数据。
public class Destinations : ObservableCollection<Destination>
{
public Destinations()
: base()
{ Add(new Destination("from", "to", distance, total_distance, "no reason"));
...
Destinations d;
d = new Destinations();
destinations.ItemsSource = d;
d.Add(new Destination(lines[i], lines[i + dim / 2], distance, dist, null));
我如何访问我放入集合中的信息。 我搜索了这些方法，但没有发现任何有用的东西。 我确信这是我的错，但请帮助我。
I am building a small program in C#. I am new to programming and and can't seem to understand how to do this.
I have a ObservableCollection class and I only manage to add data to it.
public class Destinations : ObservableCollection<Destination>
{
public Destinations()
: base()
{ Add(new Destination("from", "to", distance, total_distance, "no reason"));
...
Destinations d;
d = new Destinations();
destinations.ItemsSource = d;
d.Add(new Destination(lines[i], lines[i + dim / 2], distance, dist, null));
How can I access the information I have put in the collection.
I've searched through the methods and found nothing helpful.
I'm sure it's my fault but please help me.
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ObservableCollection 有一个 Indexer（也称为 Item 属性）。就像数组或列表一样，您只需提供要检索它的元素的索引......
目的地 d;
d = 新目的地();
d.Add(new Destination(lines[i],lines[i + dim / 2],distance,dist,null));
目的地 d0 = d[0];
http://msdn.microsoft.com/en-us/library/ms668604.aspx
The ObservableCollection has an Indexer (aka Item property). Like an array or a list you just supply the index of the element you want to retrieve it....
Destinations d;
d = new Destinations();
d.Add(new Destination(lines[i], lines[i + dim / 2], distance, dist, null));
Destination d0 = d[0];
http://msdn.microsoft.com/en-us/library/ms668604.aspx
您想检索添加到集合中的项目吗？您可以使用索引器，或者在每个中枚举它，...您遇到的问题是什么？
另外，如果将集合绑定到控件（即列表控件），则集合的元素也应该绑定到该控件。
Do you want to retrieve the items you added to the collection? You can use the indexer for that, or enumerate it in a for each, ... What is the problem which you're having?
Also, if you bind the collection to a control (i.e., a list control), the elements of the collection should be bound to the control as well.