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Debug.Print and Debug.Write no longer work in Visual Studio 2010

Posted on 2011-03-17
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Last Modified: 2013-11-27
Suddenly Debug.Print statements in my C# code are no longer being displayed in my Output window. I am running a Debug configuration of a simple Hello World C# Form application. "Project Properties/Build/Define DEBUG constant" is selected. Tools/Options/Debugging items are set to default values, including "Redirect all Output Window text . . ." cleared. I have made no app.config modifications (regarding TraceListeners or anything). I have relied on Debug.Print for years.  This problem occurs in all my projects now.

Not sure if this is relevant but when I step over the first Debug.Print statement, this shows in the Output window: " Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'

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Question by:Tech_Dr
9 Comments
 
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Expert Comment

by:Mike Tomlinson
ID: 35160486
Debug statements appear in the 'Immediate' window.
Console statements appear in the 'Output' window.
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Author Comment

by:Tech_Dr
ID: 35165253
@ Idle Mind. By default the output of Debug statements appear in the Output window, not Immediate window. Anyway I already examined the Immediate window and nothing shows up there either.
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Expert Comment

by:Mike Tomlinson
ID: 35165393
Your "default" is definitely different from my setup then...

I've been using many flavors of Visual Studio since version 2003 and, for me, it's always been the way I described.

I'm currently using VS2010 Premium.
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Expert Comment

by:hes
ID: 35165530
In the output window do you have
"Show Output From: Debug" selected
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Assisted Solution

by:MedievalWarrior
MedievalWarrior earned 125 total points
ID: 35166894
The default installation doesn't display the "Immediate Window" by default only the "Output Window". If you need to show the "Immediate Window" just press CTRL+G in the IDE. You will want to do this two times once when your project isn't running (code mode) and again when you run your project.
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Expert Comment

by:Mike Tomlinson
ID: 35167118
I've always setup my Visual Studio with VB.Net as the default...wonder if this makes any difference?...
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Assisted Solution

by:Tech_Dr
Tech_Dr earned 0 total points
ID: 35169163
Thanks for all comments and suggestions. I may have found the solution here:

http://www.dotnetmonster.com/Uwe/Forum.aspx/vs-net-debugging/1945/Trace-in-Output-Window-is-not-displayed

For a similar problem the MVP respondent says "- R-Click in Debug Output window and make sure that "Program Output" is checked."
I bet that's what it is. Most likely I must have accidentally unchecked this item without noticing. Will look on Monday when I get back to work.
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Accepted Solution

by:
Tech_Dr earned 0 total points
ID: 35179950
There is a context menu in the Output/Debug pane. "Program Output" menu item was accidentally cleared. Works ok now.
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Author Closing Comment

by:Tech_Dr
ID: 35221102
Own outside research led to solution.
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