I've created a DataSet that contains a simple DataTable containing five columns. When I link to the DataSet from another solution and build my project I get the compiler warning CA2240 (from code analysis), suggesting to
add an implementation of GetObjectData to type 'SomeDataSet'
add an implementation of GetObjectData to type 'SomeDataSet.dtSomeDataTable'
Do I need these implementations or can I ignore the warnings in my case? The serialization works as expected, so I'm not sure why I get the warnings.
I figured out how to add an implementation in the DataSet's .cs class, but how can I do that for the DataTable? All DataTable related code is auto-generated in the .designer files, so even if I changed it there it would be overwritten anyway.
Thanks in advance
G.
According to Microsoft, the warning about the missing implementation for the DataTable can be ignored. The warning is issued so that any users of the DataSet (with the DataTable in it) have to decide deliberately whether they need their own implementation of GetObjectData or not (in which case the warning can be suppressed with an appropriate comment).
HTH
G.
Finally found a solution in Visual Studio 2015 to exclude this warnings message.
On Visual Studio Solution Explorer, right click the project you have this warnings CA2240 warning for DataSet and DataTable
Run Analyze -> Run Code Analysis and Suppress Active Issues
This will generate a new file GlobalSuppressions.vb or GlobalSuppressions.cs
After that, when you run Code Analyze again, the CA2240 warning is gone.
For solution, you can run Analyze -> Run Code Analysis and Suppress Active Issues -> For Solution
Related
I am hacking around a problem we've created for ourselves. What I would like to do is log a warning in our TFS builds for any code that is instantiating a specific class. I don't want a run time warning (I've got one in place already), I want a build time warning that ProjectX is using BadClass.cs. The idea being it will give us an additional place to see things that need to be fixed once our hack is no longer needed.
So something like this:
public class BadClass
{}
public class OkClass
{}
public class MyBadService
{
var a = new BadClass(); <-- Logs a warning to the build output
}
public class MyOkService
{
var a = new OkClass(); <-- Does not log a warning
}
Edit:
I do not like the idea of using Obsolete; its a misnomer. We've already got code with Obsolete attributes and this would get lost in the noise. I don't want a generic warning that I can't control the message for. I want bright neon signs with klaxons firing and a thousand exclamation points in the message. Basically everything I can do short of failing the build. I'm using the #warning precompiler directive right now and its mostly doing what I want but it requires a human to remember to add the warning. I'm looking for something more automagic. I've seen third party libraries do stuff like this so I know its possible.
Why not just use the Obsolete attribute? It can generate a build warning for you:
https://learn.microsoft.com/en-us/dotnet/api/system.obsoleteattribute?view=netframework-4.8
You can even make it emit an error too if you want.
The answer could be negative I think.
It seems that you use or call msbuild.exe to build your C# projects. But as far as I know, MSBuild in fact calls csc.exe to build C# projects in build time.
So actually what you want is logging a warning when the compiler compile the C# code if it recognize somewhere in your code uses the BadClass in build time.
If you have the source code of BadClass in the same solution, add a project reference format to the xx.csproj which contains BadClass, and set a #warning in the BadClass it may generate the warning in build time.
But I think the scenario you're in is something like: You developed one Assembly and distribute it to your user, so you want it generates a warning when the user calls one BadClass in your assembly and builds his own project to remind him of taking care when using this bad class. If so, this is impossible for msbuild AFAIK. If I misunderstand anything, feel free to know me know :)
Update:
As Daniel and Johnson said, ObsoleteAttribute is enough to do this. Though no valid way to generate warnings from msbuild aspect directly, but msbuild will call C# compiler during build process, so generates a compiler warning can output to build output window.
At the moment I'm interested in source code analysis and playing around with the built-in possibilities and other third party plguins.
The biggest problem for me, is to identify or filter for code analysis related warnings in the error list window of Visual Studio.
I think all warnings starting with "CA" are these types of errors. Anyway I'm still not sure and want to get this clarified, so that I have knowledge about this and not just a feeling/believe.
This problem brings me in general to the question: Is there a list of all error/warning "groups" and what they are related to? Is it possible that there are "custom" defined "groups"?
I think this is important since every warning will be pushed to the same window. Based on the task someone is working on, it can be pretty hard to identify relvant warnings/outputs (especially in huge projects).
So far my results or what I think is the meaning (list may be uncomplete):
CA - Source Code Analysis, based on this source
CS - C# compiler in general, based on assumption (I get these while compiling C#)
AD - ?? (I get these from "Roslyn Security Guard" when throwing exceptions while analysing code)
C - C/C++ compiler in general, based on assumption (I know this group of warnings from C/C++ projects)
SG - ?? (Maybe these are warnings coming from successfull analysed code with Roslyn Security Guard (SG = Security Guard?))
Yes SG comes from Roslyn Security Guard. It is a custom name chosen by developer of the analyzer. This is why there is no single list of warnings. Only groups of warnings produced by Microsoft are documented on Msdn. AD001 is shown when an analyzer itself throws an exception because of a bug in it.
I recently added a new project to my Visual Studio 2008 solution. Now, as I make edits in the new project, I receive a ton (~50) of type checking errors - indicating that an assembly reference may be missing. However, when I actually build the solution, the errors go away. As best I can tell, my dependencies are set and the build order is correct. What could be wrong?
It doesn't prevent me from building and deploying, but it's a major nuisance. It makes it hard to tell when I actually have introduced new errors (until I do compile). Thus, it erodes the usefulness of having the error window do static analysis.
Example, one of the 50 errors is this:
"The type of namespace name 'PersonManager' does not exist in the namespace 'Gideon' (are you missing an assembly reference?"
In reference to this line of code:
Gideon.PersonManager pm = new Gideon.PersonManager()
PersonManager is underlined in both places, and when I right click the type and selected 'find all references' I get an alert box that says "Cannot navigate to PersonManager"
However, the references are definitely there, because when I build, it works.
One other detail is that there is a mixture of C# and VB.net code, though I don't think that should make a difference.
Well, yes, the IntelliSense parser is not an exact replica of the C# compiler. It has a very different job to do, it needs to do something meaningful while the code is utterly broken since you are editing it. Tough assignment, they did a tremendous job with it. But as a side-effect, it can fail to parse things that are actually legal. It's quite rare but not unheard of, seen it myself a few times.
This won't go anywhere concrete until you at least give us some idea of what kind of errors you are seeing, along with a snippet of the code that generates them. You didn't do so, I can only recommend that you select another window so you don't have to look at them.
I had the same problem. I had a project in my solution that was causing the problem - I removed the project from the solution, then added a reference to that project in the main solution and the errors went away. Strange that it only happened on 1 machine. Opening the solution on another machine was fine...
FxCops is something new to me, but as always I would like to get to know the new things..
From what I've read, FxCops is already included in VS2008. I guess it's the "Code Analysis" function. Whenever I try to run it though, it seems to start a rebuild and end in the "Finished Rebuilding" state.
I checked the output window and there are a bunch of warnings there. But if I'm not mistaking, there should be more of a GUI for this then the wall of text in my output window, right?
Am I missing a window that should have popped up? Can I open it somewhere? Or is there anything else I'm missing?
Yes, Code Analysis is the nice friendly name for FxCop. However, I'm not aware of a friendly window beyond the errors / warning list where they should appear, prefixed CA.
On the project properties screen there is a Code analysis tab where you can treat warnings as errors to enforce the rules you care about.
Just so everyone knows, because it took me a long time to figure this out.... Code Analysis / FxCop is only included in Team System and Team Suite versions of VS 2008, not in the Professional Edition.
You're not missing anything - there isn't a pop-up window.
The list of issues in the output window is pretty much all you'd get in FxCop. It's just that FxCop is a standalone application.
Here's a decent article on FxCop and Code Analysis:
Link
An alternative to FxCop would be to use the tool NDepend that lets write Code Rules over C# LINQ Queries (namely CQLinq). NDepend is integrated in VS 2012, 2010 and 2008. Disclaimer: I am one of the developers of the tool
More than 200 code rules are proposed by default. Customizing existing rules or creating your own rules is straightforward thanks to the well-known C# LINQ syntax.
NDepend code rules can be verified live in Visual Studio and at build process time, in a generated HTML+javascript report.
You seems concerned by the number of false-positive. To keep the number of false-positives low, CQLinq offers the unique capabilities to define what is the set JustMyCode through special code queries prefixed with notmycode. More explanations about this feature can be found here. Here are for example two notmycode default queries:
Discard generated and designer Methods from JustMyCode
Discard generated Types from JustMyCode
To keep the number of false-positives low, with CQLinq you can also focus rules result only on code added or code refactored, since a defined baseline in the past. See the following rule, that detect methods too complex added or refactored since the baseline:
warnif count > 0
from m in Methods
where m.CyclomaticComplexity > 20 &&
m.WasAdded() || m.CodeWasChanged()
select new { m, m.CyclomaticComplexity }
In a project I'm working on FxCop shows me lots of (and I mean more than 400) errors on the InitializeComponent() methods generated by the Windows Forms designer. Most of those errors are just the assignment of the Text property of labels.
I'd like to suppress those methods in source, so I copied the suppression code generated by FxCop into AssemblyInfo.cs, but it doesn't work.
This is the attribute that FxCop copied to the clipboard.
[module: SuppressMessage("Microsoft.Globalization",
"CA1303:DoNotPassLiteralsAsLocalizedParameters",
Scope = "member",
Target = "WindowsClient.MainForm.InitializeComponent():System.Void",
MessageId = "System.Windows.Forms.Control.set_Text(System.String)")]
Anyone knows the correct attribute to suppress this messages?
PS: I'm using Visual Studio 2005, C#, FxCop 1.36 beta.
You've probably got the right code, but you also need to add CODE_ANALYSIS as a precompiler defined symbol in the project properties. I think those SuppressMessage attributes are only left in the compiled binaries if CODE_ANALYSIS is defined.
In FxCop 1.36 there is actually a project option on the "Spelling & Analysis" tab that will supress analysis for any generated code.
If you don't want to turn analysis off for all generated code, you need to make sure that you add a CODE_ANALYSIS symbol to the list of conditional compilation symbols (project properties, Build tab). Without this symbol defined, the SupressMessage attributes will be removed from the compiled code so FxCop won't see them.
The other problem with your SuppressMessage attribute is that you are listing a "Target" of a specific method name (in this case WindowsClient.MainForm.InitializeComponent():System.Void) and listing a specific "Scope". You may want to try removing these; otherwise you should add this SuppressMessage to each instance of the method.
You should also upgrade to the RTM version of FxCop 1.36, the beta will not automatically detect the newer version.
Module level suppression messages need to be pasted into the same file as the code that is raising the FxCop error before the namespace declaration or in assemblyinfo.cs. Additionally, you will need to have CODE_ANALYSIS defined as a conditional compiler symbols (Project > Properties > Build). Once that is in place, do a complete rebuild of project and the next time you run FxCop the error should be moved to the "Excluded in Source" tab.
Also, one small tip, but if you are dealing with a lot of FxCop exclusions it might be useful to wrap a region around them so you can get them out of the way.