绑定后的ObservableCollection更新(ObservableCollection update after binding)

 我有一个ObservbleCollection绑定到列表框。 在我将集合作为列表的ItemsSource后，我无法更新我的集合。 如果我更新它，程序关闭（没有任何崩溃）。 
 
 代码： 
 我上课了： 
 
class MyFile
{
    String FileName {get; set;}
    ImageSource Ico {get; set;}
}
 
 然后在约束器中运行代码（在InitializeComponents之后） 
 
ObservableCollection<MyFile> filesList = new ObservableCollection<MyFile>();
filesList.Add(new MyFile { Name = "bar.doc", Ico = null } // Work Fine
filesList.Add(new MyFile { Name = "foo.txt", Ico = null } // Work Fine
files.ItemsSource = filesList; 
filesList.Add(new MyFile { Name = "try.txt", Ico = null } // EXIT FROM PROGRAM
 
 我的课程有什么问题？ 
 
 编辑 
 刚刚使用null测试它而不是GetIcon 

I have an ObservbleCollection with binding to listbox. After I put the collection as ItemsSource of the list, I cannot update my collection. If I update it, the program close (without any crash). 
 
The Code:
 I have the class:
 
class MyFile
{
    String FileName {get; set;}
    ImageSource Ico {get; set;}
}
 
Then run the code in the constractor (after InitializeComponents)
 
ObservableCollection<MyFile> filesList = new ObservableCollection<MyFile>();
filesList.Add(new MyFile { Name = "bar.doc", Ico = null } // Work Fine
filesList.Add(new MyFile { Name = "foo.txt", Ico = null } // Work Fine
files.ItemsSource = filesList; 
filesList.Add(new MyFile { Name = "try.txt", Ico = null } // EXIT FROM PROGRAM
 
What's wrong in my program?
 
Edit
 Just tested it with null instead GetIcon

原文：https://stackoverflow.com/questions/15729739