Visual Studio 断点窗口：TreeView 显示什么？
通常，当在 Visual Studio（本例中为 2008）中使用断点时，我只会看到一个平面列表。但有时，我会得到每个断点的树视图，如下所示（展开节点有 26 个子节点）。所有树节点都引用同一行代码，并且所有可选列为每个节点显示相同的数据。我猜想它们可能与线程有关，但是它们有什么用处以及它们实际上显示了什么？如果它们有用，你应该如何区分它们？
Usually when using breakpoints in Visual Studio (2008 in this example), I just see a flat list. Sometimes though, I get a tree-view for each breakpoint, as shown below (there are 26 child nodes of the expanded node). All the tree nodes refer to the same line of code, and all the optional columns display the same data for each node. I guess that they're possibly to do with threads, but what is the use of these and what do they actually show? And if they are of some use, how are you supposed to distinguish between them?
Breakpoints window http://www.freeimagehosting.net/uploads/2244242173.png
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就我而言，它似乎与正在调试的进程中的 AppDomains 有关。如果我将 WinDbg 附加到进程，加载 SOS.dll 并运行
!DumpDomain，我可以看到 26 个 AppDomain，对应于问题中的 26 个树节点。如果“断点”窗口中有一列可以区分这些，那就太好了！In my case, it seems to relate to the AppDomains in the process being debugged. If I attach WinDbg to the process, load SOS.dll and run
!DumpDomain, I can see 26 AppDomains, corresponding to the 26 tree nodes in the question. It would be nice if there was a column in the Breakpoints window that would distinguish between these!这些被称为子断点，记录很少（1， 2）并且通常有很多错误。
根据经验，对于本机代码，会形成子断点：
These are called Child Breakpoints, are sparsely documented (1, 2) and are generally rather buggy.
Empirically, for native code child breakpoints are formed: