Globally suppress c# compiler warnings

Question

In my app I have a fair number of entities which have fields which are getting their values set via reflection. (In this case NHibernate is setting them). I'd like to get rid of the "x is never assigned to and will always have its default value 0" warnings, so I can more easily pick out the other warnings. I realize you can surround them in pragma directives, but AFAIK you have to do this for each one. Is there a project wide or solution wide way I could do this?

Any reason you wouldn't just put #pragma warning disable 169 at the top of the source code file? It suppresses for the remainder of the file. — Hans Passant, Feb 08 '09 at 22:02
++ to that, much better since it makes it clear that this file contains loads of these and not absolutely everything — ShuggyCoUk, Feb 09 '09 at 13:54
In my case I'm using NHibernate to set the IDs of entities. So on every domain object I have private int _ID; I really don't want to have to set put pragma directives on each of the entites, but would rather something global. — pondermatic, Feb 10 '09 at 01:56
^^^ not only you ***should*** put the pragma directive in each entity, you should actually enable it and disable it on each individual offending assignment in each entity. Stop confusing "less typing" with convenience. Any convenience earned by less typing is paid for later with much more inconvenience and weeping and gnashing of teeth. — Mike Nakis, Nov 13 '20 at 11:25

score 39 · Accepted Answer · answered Feb 08 '09 at 21:32

39

Use the C# commandline option /nowarn http://msdn.microsoft.com/en-us/library/7f28x9z3(VS.80).aspx

To do this within visual studio goto Project properties->Build->(Errors and warnings) Suppress Warnings and then specify a comma separated list of warnings which need to be suppressed.

answered Feb 08 '09 at 21:32

Sandeep Datta

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As AnthonyWJones points out below, the compiler warning IDs you need to put into this comma separate list are found in the Output window while viewing the Build stream.What isn't mentioned yet in this thread is that they come in the form `CSxxxx` and you must remove the 'CS' prefix in your listed codes in order for it to work. – J T R Sep 04 '12 at 02:42
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This was hard to find in VS2017. In the menu bar choose **Project->(project name) Properties...** Choose **Build** tab. Look under **Errors and warnings** for **Suppress warnings:** Add the warning numbers in that box. – wallyk May 08 '18 at 00:06

score 12 · Answer 2 · answered Feb 08 '09 at 21:34

12

Open the project properties, on the build tab, enter warning IDs you want to surpress in the Suppress warnings: box.

answered Feb 08 '09 at 21:34

AnthonyWJones

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That is what I want to do but sadly warning ID's not written with warning in VS2010's error list pane.And some warning IDs are very close but codes are diffrent,I mean CLS error for int and CLS error for a Class name are diffrent.If your coding standart is not CLS what will you do? – Davut Gürbüz May 02 '12 at 07:48
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@DavutGürbüz: Trying looking in the output window when building – AnthonyWJones May 02 '12 at 20:27
I opened detailed build so its hard to see, but it works, BC40028 disabled most of my CLS warnings thanks – Davut Gürbüz May 03 '12 at 06:40
Is there a programmatic way to suppress errors/warnings? – Shimmy Weitzhandler Apr 30 '17 at 06:25

Andy Piper · Answer 3 · 2016-03-31T12:41:57.123

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The VC++ XML tag for this is <DisableSpecificWarnings/> with a semi-colon separated list of numeric IDs. This doesn't appear to be documented anywhere that I can see but FYI.

edited Mar 31 '16 at 12:41

answered Mar 31 '16 at 11:42

Andy Piper

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score 0 · Answer 4 · answered Aug 09 '23 at 23:09

At least in VS2019, you can control solution-level (truly, it's directory-level) warnings in the Directory.Build.Props file by adding the following at the <Project> level:

    <PropertyGroup>
        <NoWarn>MSB3270;MSD3246</NoWarn>
    </PropertyGroup>

Globally suppress c# compiler warnings

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