我有这个Singleton
作为ObservableCollection<MyData>
会员:
public sealed class Singleton
{
private static volatile Singleton instance;
private static object syncRoot = new Object();
public ObservableCollection<MyData> Files { get; private set; }
private Singleton()
{
Files = new ObservableCollection<MyData>();
}
public static Singleton Instance
{
get
{
if (instance == null)
{
lock (syncRoot)
{
if (instance == null)
instance = new Singleton();
}
}
return instance;
}
}
}
来自主表单类的声明:
ObservableCollection<MyData> Files;
在构造函数之后:
Files= Singleton.Instance.Files;
XAML:
<ListView ItemsSource="{Binding Files}" />
现在,当用户选择文件时,我想检查每个文件:
private static void Check(IEnumerable<string> files)
{
CancellationTokenSource tokenSource = new CancellationTokenSource();
CancellationToken token = tokenSource.Token;
Task task = Task.Factory.StartNew(() =>
{
try
{
Parallel.ForEach(files,
new ParallelOptions
{
MaxDegreeOfParallelism = 1
},
file =>
{
ProcessFile(file);
});
}
catch (Exception)
{ }
}, tokenSource.Token,
TaskCreationOptions.None,
TaskScheduler.Default).ContinueWith
(t =>
{
}
, TaskScheduler.FromCurrentSynchronizationContext()
);
}
和:
private static void ProcessFile(string file)
{
// Lets assume that i want to add this file into my `ListView`
MyData data = new .....
Singleton.Instance.Files.Add(data);
}
所以在这一点之后,当我将文件添加到我的列表中时,什么都没有发生。