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From Wikipedia, the free encyclopedia
Stable release
Operating systemWindows
TypeSoftware quality
LicenseCommercial, Proprietary

NDepend is a static analysis tool for C# and .NET code to manage code quality and security. The tool proposes a large number of features, from CI/CD Web Reporting to Quality Gate and Dependencies Visualization. For that reason, the community refers to it as the "Swiss Army Knife" for .NET Developers.


NDepend Report Source Files List
NDepend Report Source Files List
NDepend Dependency Graph

The main features of NDepend are:

Code rules through LINQ queries (CQLinq)[edit]

NDepend Code Querying CQLinq

Live code queries and code rules through LINQ queries is the backbone of NDepend, all features use it extensively. Here are some sample code queries:

  • Base class should not use derivatives:
 // <Name>Base class should not use derivatives</Name>
 warnif count > 0 
 from baseClass in JustMyCodeTypes
 where baseClass.IsClass && baseClass.NbChildren > 0 // <-- for optimization!
 let derivedClassesUsed = baseClass.DerivedTypes.UsedBy(baseClass)
 where derivedClassesUsed.Count() > 0
 select new { baseClass, derivedClassesUsed }
 // <Name>Avoid making complex methods even more complex (source code cyclomatic complexity)</Name>
 warnif count > 0 
 from m in JustMyCodeMethods where
  !m.IsAbstract &&
   m.IsPresentInBothBuilds() &&
 let oldCC = m.OlderVersion().CyclomaticComplexity
 where oldCC > 6 && m.CyclomaticComplexity > oldCC 
 select new { m,
     newCC = m.CyclomaticComplexity, 
     oldLoc = m.OlderVersion().NbLinesOfCode,
     newLoc = m.NbLinesOfCode,

Additionally, the tool provides a live CQLinq query editor with code completion and embedded documentation.

See also[edit]

External links[edit]

NDepend reviewed by the .NET community[edit]

Books that mention NDepend[edit]

  • Girish Suryanarayana, Ganesh Samarthyam, and Tushar Sharma. Refactoring for Software Design Smells: Managing Technical Debt (2014)
  • Marcin Kawalerowicz and Craig Berntson. Continuous Integration in .NET (2010)
  • James Avery and Jim Holmes. Windows developer power tools (2006)
  • Patrick Cauldwell and Scott Hanselman. Code Leader: Using People, Tools, and Processes to Build Successful Software (2008)
  • Yogesh Shetty and Samir Jayaswal. Practical .NET for financial markets (2006)
  • Paul Duvall. Continuous Integration (2007)
  • Rick Leinecker and Vanessa L. Williams. Visual Studio 2008 All-In-One Desk Reference For Dummies (2008)
  • Patrick Smacchia. Practical .Net 2 and C# 2: Harness the Platform, the Language, the Framework (2006)