How to: Switch to Another Thread While Debugging in Visual Studio (C#, Visual Basic, C++)
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
When you debug a multithreaded application, you can use any one of several methods to switch from the thread that you have been working with to another thread.
Note
If you want to control the order in which threads execute, you need to freeze and thaw threads.
When you examine threads in the code editor and the different multithreaded debugging windows, the yellow arrow indicates the current thread. A green arrow with a curly tail indicates that a non-current thread has the current debugger context.
To switch to any thread that appears
- In the Threads or Parallel Watch window, double-click the thread.
To switch to a thread in a source window
In the left gutter, right-click a thread marker icon
, point to Switch to, and then click the name of that thread to which you want to switch. The shortcut menu shows only the threads at that specific location.If no thread markers appear, right-click in the Threads window and verify that Show Threads in Source is selected.
To switch to a thread in the Debug Location toolbar
On the Debug Location toolbar, click the Thread list.
In the list, click the thread to which you want to switch.