-
Recent Books:
![[Essential Algorithms, Second Edition]](http://www.csharphelper.com/essential_algs_2e_158_200.jpg)
![[WPF 3d, Three-Dimensional Graphics with WPF and C#]](http://www.csharphelper.com/wpf3d_160_200.png)
![[The C# Helper Top 100]](http://www.csharphelper.com/top100_161_200.png)
![[Interview Puzzles Dissected]](http://www.csharphelper.com/interview_puzzles_161_200.jpg)
-
Recent Posts
-
Recent Comments
- Use menu commands with shortcuts to save and restore user-drawn polygons in C# and WPF - C# HelperC# Helper on Let the user edit polygons in WPF and C#
- RodStephens on Copy an irregular area from a picture to the clipboard in C#
- hasan on Copy an irregular area from a picture to the clipboard in C#
- Sprialize an image in C# - C# HelperC# Helper on Draw an Archimedes spiral in C#
- Sprialize an image in C# - C# HelperC# Helper on Draw a filled spiral in C#
Archives
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- April 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- June 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- February 2014
- January 2014
- December 2013
- October 2013
- August 2013
- June 2013
- December 2012
- September 2012
- July 2012
- June 2012
- November 2011
- May 2011
- April 2011
- February 2011
- December 2010
Categories
- .NET
- 3D
- 3D graphics
- ADO.NET
- algorithms
- animation
- API
- arrays
- attributes
- audio
- books
- C#
- C# programming
- calculations
- challenges
- classes
- clipboard
- coding
- combinatorics
- console
- controls
- cryptography
- curve fitting
- database
- debugging
- dialogs
- directories
- Drag and Drop
- drawing
- drawings
- enums
- Event
- events
- example program
- Excel
- extension methods
- extensions
- files
- finance
- fonts
- formatting
- forms
- fractals
- ftp
- games
- GDI+
- generic
- geometry
- globalization
- graphics
- html
- IDE
- image processing
- inheritance
- interfaces
- internationalization
- internet
- interoperability
- LINQ
- lists
- localization
- mathematics
- memory
- menus
- MessageBox
- methods
- miscellany
- multimedia
- network
- Office
- OOP
- operators
- parsing
- performance
- phone
- PowerPoint
- printers
- printing
- productivity
- programs
- puzzles
- recursion
- reflection
- registry
- regular expressions
- serialization
- settings
- SQL
- stories
- strings
- syntax
- system
- threading
- three-dimensional graphics
- tips
- tools
- transformations
- Uncategorized
- user interface
- variables
- VBA
- web
- Windows Forms programming
- WMI
- Word
- wpf
- XAML
- XML
Meta
Category Archives: challenges
A plea for help: Tell me what you want to see in my blog!
I get remarkably little feedback from my blog. I track post views and know that I have 857 Twitter followers, but people rarely let me know if they particularly like or dislike a post. That makes it hard for me … Continue reading
Posted in ADO.NET, algorithms, animation, API, challenges, combinatorics, controls, cryptography, curve fitting, database, extension methods, files, fonts, fractals, games, geometry, globalization, graphics, internationalization, LINQ, localization, mathematics, Office, phone, printing, reflection, registry, serialization, threading, transformations, user interface, Word, wpf, XAML, XML
15 Comments
Langton’s Ant contest winners
See Contest: Langton’s Ant Simulation for a description of the Langton’s Ant simulation and the contest. Click these links to download solutions by: Richard Moss Greg Ables Both are great solutions to a really interesting and challenging problem. If you … Continue reading
Posted in algorithms, animation, challenges, mathematics
Leave a comment
Contest: Langton’s Ant Simulation
Prize: Fame and fortune! (Plus a free book from whatever I have in stock.) Due Date: March 15, 2011 The Science of Discworld talks about Langton’s Ant. The idea is a tiny ant is sitting in the middle of a … Continue reading
Posted in algorithms, animation, challenges, mathematics
1 Comment
Challenge: Write a program that can display its own code in C#
This is a programming puzzle. Write a program that can display its own code in a text box. This code should include everything in the Form1.cs file and doesn’t need to include any other code such as the code in … Continue reading
Posted in challenges, miscellany, variables
5 Comments