NDepend Default Rules for .NET

Every new NDepend project comes with 235 rules, 22 quality gates and 136 code queries and trend metrics, checked on your C# and .NET code in Visual Studio, in CI and in reports. Each one is a few lines of CQLinq (C# LINQ over the code model) that you can read and adapt. Each page below gives the description, how to fix the issues, and the full CQLinq source. Prefer to browse and search interactively? Use the Rules Explorer.

Quality Gates (19)

Hot Spots (7)

Code Smells (10)

Avoid types too big ND1000
Avoid types with too many methods ND1001
Avoid types with too many fields ND1002
Avoid methods too big, too complex ND1003
Avoid methods with too many parameters ND1004
Avoid methods with too many overloads ND1005
Avoid methods potentially poorly commented ND1006
Avoid types with poor cohesion ND1007
Avoid methods with too many local variables ND1008
Avoid unmaintainable code ND1009

Code Smells Regression (9)

Object Oriented Design (14)

Avoid interfaces too big ND1200
Base class should not use derivatives ND1201
Class shouldn't be too deep in inheritance tree ND1202
Class with no descendant should be sealed if possible ND1203
Overrides of Method() should call base.Method() ND1204
Do not hide base class methods ND1205
A stateless class or structure might be turned into a static type ND1206
Non-static classes should be instantiated or turned to static ND1207
Methods should be declared static if possible ND1208
Constructor should not call a virtual method ND1209
Avoid the Singleton pattern ND1210
Don't assign static fields from instance methods ND1211
Avoid empty interfaces ND1212
Avoid types initialization cycles ND1213

Design (16)

Avoid custom delegates ND1300
Types with disposable instance fields must be disposable ND1301
Disposable types with unmanaged resources should declare finalizer ND1302
Methods that create disposable object(s) and that don't call Dispose() ND1303
Disposable Types Must Unsubscribe Events ND1315
Classes that are candidate to be turned into structures ND1304
Avoid namespaces with few types ND1305
Nested types should not be visible ND1306
Declare types in namespaces ND1307
Empty static constructor can be discarded ND1308
Instances size shouldn't be too big ND1309
Attribute classes should be sealed ND1310
Don't use obsolete types, methods or fields ND1311
Do implement methods that throw NotImplementedException ND1312
Override equals and operator equals on value types ND1313
Boxing/unboxing should be avoided ND1314

Architecture (13)

Avoid namespaces mutually dependent ND1400
Avoid namespaces dependency cycles ND1401
Avoid partitioning the code base through many small library Assemblies ND1402
Enforcing Clean Architecture ND1412
UI layer shouldn't use directly DB types ND1403
UI layer shouldn't use directly DAL layer ND1404
Assemblies with poor cohesion (RelationalCohesion) ND1405
Namespaces with poor cohesion (RelationalCohesion) ND1406
Assemblies that don't satisfy the Abstractness/Instability principle ND1407
Avoid excessive class coupling ND1410
Higher cohesion - lower coupling ND1408
Avoid mutually-dependent types ND1409
Example of custom rule to check for dependency ND9900

API Breaking Changes (9)

Code Coverage (15)

Dead Code (5)

Potentially Dead Types ND1700
Potentially Dead Methods ND1701
Potentially Dead Fields ND1702
Wrong usage of IsNotDeadCodeAttribute ND1703
Code used only by tests ND1704

Security (39)

Visibility (12)

Immutability (15)

Naming Conventions (23)

Source Files Organization (6)

.NET Framework Usage

System (12)

Mark ISerializable types with SerializableAttribute ND2200
Mark assemblies with CLSCompliant (deprecated) ND2201
Mark assemblies with ComVisible (deprecated) ND2202
Mark attributes with AttributeUsageAttribute ND2203
Remove calls to GC.Collect() ND2204
Don't call GC.Collect() without calling GC.WaitForPendingFinalizers() ND2205
Enum Storage should be Int32 ND2206
Do not raise too general exception types ND2207
Do not raise reserved exception types ND2208
Uri fields or properties should be of type System.Uri ND2209
Types should not derive from System.ApplicationException ND2210
Don't Implement ICloneable ND2211

System.Collections (4)

Collection properties should be read only ND2300
Don't use .NET 1.x HashTable and ArrayList ND2301
Caution with List.Contains() ND2302
Prefer return collection abstraction instead of implementation ND2303

System.Runtime.InteropServices (3)

System.Threading (6)

System.Xml (2)

NDepend Default Rules for .NET

Quality Gates (19)

Hot Spots (7)

Code Smells (10)

Code Smells Regression (9)

Object Oriented Design (14)

Design (16)

Architecture (13)

API Breaking Changes (9)

Code Coverage (15)

Dead Code (5)

Security (39)

Visibility (12)

Immutability (15)

Naming Conventions (23)

Source Files Organization (6)

.NET Framework Usage

System (12)

System.Collections (4)

System.Runtime.InteropServices (3)

System.Threading (6)

System.Xml (2)

System.Globalization (1)

System.Reflection (3)

Microsoft.Contracts (1)

API Usage

Unity (9)

Defining JustMyCode (7)

Trend Metrics

Issues (11)

Rules (3)

Quality Gates (3)

Debt (7)

Code Size (22)

Maximum and Average (15)

Coverage (12)

Third-Party Usage (6)

Code Diff Summary (25)

Statistics (13)

Samples of Custom rules

Check Architecture (10)

Check Coverage on particular Code Elements (4)

Custom Naming Conventions (2)