Why is my configuration manager disabled in Visual Studio 2010?

I just started working on a new project and I can't set the build action to Debug/Release. This is a huge problem!

I have another solution on my system that, when opened, allows me to change the solution configuration. So it must have something to do with 开发者_如何学Cthis specific solution?

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(from http://www.gregcons.com/KateBlog/HowDoIMakeADebugBuild.aspx, which includes screenshots)

bring up Tools, Options, and go to the General section under Projects and Solutions. Find "Show advanced build configurations" and check it.

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The right solution is to:

1. Tools, Options
2. Click General section under Projects and Solutions.
3. Check Show advanced build configurations.

You should see the solution configuration drop-down will be enabled

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From a Google search

Tools | Customize from the menu.

In the Build section, drag the "Solution  Configuration" item from the list
on the right to the build toolbar.  You might also want to drag the "Platform
Configuration" item as well. The Configuration Manager itself is available
from the drop-down list of either of those controls.  Also check
Tools|Customize|Toolbars to make sure that the Build toolbar is visible.