Debugging with Visual Studio

The debugging features of Visual Studio 2017

Transcript

1. DEBUGGING By Philip Sutton
2. WHO AM I • Started full time work 1991 • Worked for Science, Travel, Management Consultancy, Finance, Medical, Education • Programmed in COBOL, Fortran, Visual Basic 6, VB.net and C# as well as Sql • C# since 2005 • Twitter @GBPhilipSutton
3. INTRODUCTION • Visual Studio Options • Debugging Attributes • Datatips • Debugging Windows • Dumps • Symbol Servers • Front End • Enterprise Features
4. VISUAL STUDIO OPTIONS • Debugging Options • Exception Options
5. DEBUGGING OPTIONS
6. EXCEPTION OPTIONS
7. EXCEPTIONS SETTINGS • Demo
8. DEBUGGING ATTRIBUTES • Debugger Display • Debugger Browsable • Debugger Type Proxy
9. DEBUGGERDISPLAY
10. DEBUGGERDISPLAY • [DebuggerDisplay("Name = {Name}")] • public class Person • { • public string Name { get; set; } • public int Age { get; set; } • }
11. DEBUGGERDISPLAY
12. DEBUGGERBROWSABLE • public class PersonBrowse • { • public string Name { get; set; } • public int Age { get; set; } • [DebuggerBrowsable(DebuggerBrowsableState.Collapsed)] • public Address Address { get; set; } • }
13. DEBUGGERBROWSABLE
14. DEBUGGERBROWSABLE • Never
15. DEBUGGERDISPLAY • RootHidden
16. DEBUGGER PROXY TYPE • Allows the significant and fundament change on the debugging view of a type. • Demo
17. DEBUGGER VISUALISERS • Some built in – xml, json, text, html • Many in the market place • Write your own
18. DATATIPS
19. DEBUGGING WINDOWS - LOCALS/AUTO
20. DEBUGGING WINDOWS - CALL STACK
21. DEBUGGING WINDOWS - WATCH WINDOW
22. MULTI-THREADED APPLICATIONS • Thread Window • Debug Toolbar • Debug Location • Parallel Stacks • Parallel Watch
23. MULTITHREADED DEBUGGING WINDOWS - THREADS
24. MULTITHREADING WINDOWS – DEBUG TOOLBAR
25. MULTITHREADING WINDOWS DEBUG LOCATION
26. MULTITHREADING WINDOWS PARALLEL STACKS • private static void ParallelExample() • { • var names = new List<string> {"Bob", "Judy", "Chris", "Ashley"}; • Parallel.ForEach(names, (name) => • { • for (var i = 0; i < 10; i++) • { • Console.WriteLine($"Hello {name} {i}"); • } • }); • }
27. MULTITHREADING WINDOWS PARALLEL STACKS
28. MULTITHREADING WINDOWS PARALLEL WATCH
29. BREAKPOINTS • Data Breakpoints • Condition • Hit Count • Filter • When hit • Break at Function
30. BREAKPOINTS DATA
31. BREAKPOINTS CONDITIONAL BREAKPOINTS
32. BREAKPOINTS CONDITIONAL
33. BREAKPOINTS CONDITIONAL • private static void ConditionalBreakpoints() • { • for (var i = 0; i < 10; i++) • { • if (i==5) • { • Debugger.Break(); • } • Console.WriteLine($"The value is {i}"); • } • }
34. BREAKPOINTS CONDITIONAL • private static void ConditionalBreakpoints() • { • for (var i = 0; i < 10; i++) • { • if ((Debugger.IsAttached) && (i==5)) • { • Debugger.Break(); • } • Console.WriteLine($"The value is {i}"); • } • }
35. BREAKPOINTS HIT COUNT
36. BREAKPOINTS HIT COUNT
37. BREAKPOINTS FILTER
38. BREAKPOINTS FILTER
39. BREAKPOINTS WHEN HIT
40. BREAKPOINTS WHEN HIT
41. BREAKPOINTS BREAK AT FUNCTION
42. ADDRESS LEVEL DEBUGGING • Memory • Disassembly • Registers
43. WPF/UWP • Live Visual Tree • Live Property Explorer
44. WPF/UWP VISUAL TREE/ PROPERTY EXPLORER
45. DUMPS
46. DUMPS
47. SYMBOL SERVERS • The symbol server enables the debuggers to automatically retrieve the correct symbol files without product names, releases, or build numbers.
48. FRONT END • Javascript • Browser Link • Sync • Inspector
49. ENTERPRISE • Code Maps • Intellitrace
50. ENTERPRISE CODE MAPS
51. ENTERPRISE INTELLITRACE
52. ENTERPRISE INTELLITRACE
53. ENTERPRISE INTELLITRACE
54. ENTERPRISE INTELLITRACE
55. ENTERPRISE INTELLITRACE
56. OTHER DEBUGGING ITEMS • Remote Debugging • Azure Debugging • Live Sharing • WinDbg • SOS
57. REFERENCES • https://docs.microsoft.com/en-us/visualstudio/debugger - general debugging • https://docs.microsoft.com/en-us/visualstudio/debugger/general- debugging-options-dialog-box?view=vs-2017 debugging options • https://www.wintellect.com/pdb-files-what-every-developer-must-know/ pdb files • https://blogs.msdn.microsoft.com/jaredpar/2011/03/18/debuggerdisplay- attribute-best-practices/ (old) debugger display best practices • https://blogs.msdn.microsoft.com/visualstudio/2017/06/26/7-lesser-known- hacks-for-debugging-in-visual-studio/
58. QUESTIONS