I've recently upgraded to Visual Studio 2012 and haven't have any problems except for the fact that comments beginning with "//todo" no longer show up in the task list. I have absolutely no idea on where to start looking for a solution to this problem as all of the keywords are too general.
I came across other similar questions where the answer was that the file wasn't open containing the //todo comment, but that is not the case for me. My todo comments do not show up even when the file is open in front of me.
Actually there is a dropdown control at the top of the "Task List" window and if you use the Visual Studio 2012 Dark Theme the dropdown looks like a label. If you click the "User Tasks" text, you will see "Comments" selection which lists your comments that contain "//todo".
** For Visual Studio 2012 **
- Select View -> Other Windows -> Task List.
Select the option "Comments" in the Task List window.
For Visual Studio 2008.
In the Task List window select the option "Comments".
You can view what you have set for tokens in Tools/Options under the Environment/Task List item in the left tree. You should have "TODO" in there which should detect //todo.
Well, I was Having the same problem working in Windows-7 and Visual Studio 2012. All I had to do is change from:
// TODO
to
// TODO: do not forget the colon
Chalk this up to a stupid mistake, if it is not showing for you make sure your code doesn't look like this:
//int justfakecode=1; // TODO: FIX ME LATER
with the token as part of a commented out line. I herped the derp on this one.
Task list comments just shows current files TODO comments. This may be a bug of Visual Studio.
来源：https://stackoverflow.com/questions/12290235/todo-tasks-not-appearing-in-the-task-list-in-visual-studio-2012