
Recent Posts

Recent Comments
Archives
 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
 tips
 tools
 transformations
 Uncategorized
 user interface
 variables
 VBA
 web
 Windows Forms programming
 WMI
 Word
 wpf
 XAML
 XML
Meta
Category Archives: mathematics
Solve Geometric Problems with C#
[This is a promo piece by Packt, the publisher of my book The Modern C# Challenge. It includes two of the 100 example problems and solutions in the book.] Solve Geometric Problems with C# Learn how to solve C# geometric … Continue reading
Posted in books, geometry, mathematics
Tagged books, C#, C# programming, example, example program, geometry, mathematics, Newton, Pi, The Modern C# Challenge, Windows Forms programming
Leave a comment
Pingback: Code Project post “Orbital Mechanics Introduction, Part 2”
The Code Project post Orbital Mechanics Introduction, Part 2 by charles922 uses some code from my WPF 3D posts. His program lets you experiment with the following orbital parameters: Eccentricity – the eccentricity of the orbit’s ellipse. Inclination – the … Continue reading
Posted in 3D, 3D graphics, algorithms, books, drawing, graphics, mathematics, wpf, XAML
Tagged 3D, 3D graphics, algorithms, books, C#, C# programming, drawing, example, example program, graphics, mathematics, threedimensional graphics, Windows Forms programming, WPF, XAML
Leave a comment
Find happy numbers in C#
Before I show you the code, let me explain what happy numbers are. Happy Numbers To find happy numbers, start with any integer. Replace it with the sum of the squares off its digits. Repeat the process until the numbers … Continue reading
Posted in algorithms, mathematics
Tagged algorithms, C#, C# programming, example, example program, happy numbers, mathematics, Windows Forms programming
Leave a comment
Draw words on a circle in WPF and C#
This example shows one way that you can draw words on a circle in WPF. Note that it does not show how to draw words where each character is rotated to follow the circle’s curve. Each word is rotated as … Continue reading
Posted in algorithms, graphics, mathematics
Tagged algorithms, C#, C# programming, circle text, draw words, example, example program, graphics, mathematics, Windows Forms programming
Leave a comment
Draw a hyperbolic spiral in C#
A hyperbolic spiral, which is also called an reciprocal spiral, is the inverse of an Archimedes spiral. It uses the equation r = A / θ to generate points on a spiral. This spiral has a couple of interesting properties. … Continue reading
Posted in algorithms, graphics, mathematics
Tagged algorithms, Archimedes spiral, C#, C# programming, example, example program, graphics, mathematics, spiral, Windows Forms programming
Leave a comment
Review posted: “The Modern C# Challenge”
The Modern C# Challenge: Become an expert C# programmer by solving interesting programming problems Clock End Gooner has posted a review of my latest book, The Modern C# Challenge: Become an expert C# programmer by solving interesting programming problems. Please … Continue reading
Posted in books, combinatorics, cryptography, geometry, mathematics
Leave a comment
Draw a logarithmic spiral in C#
The post Draw an Archimedes spiral in C# uses the equation r = A˙θ to generate the points on a spiral. This example is almost exactly the same except it uses the equation to r = A˙eB˙θ to generate its … Continue reading
Posted in algorithms, graphics, mathematics
Tagged algorithms, Archimedes spiral, C#, C# programming, example, example program, graphics, mathematics, spiral, Windows Forms programming
Leave a comment
Draw a filled spiral in C#
My post Draw an Archimedes spiral in C# explained how to draw multiple Archimedes spirals starting at a common center point. This post shows how you can fill the spaces between the spirals with colors. The basic idea is to … Continue reading
Posted in algorithms, graphics, mathematics
Tagged algorithms, Archimedes spiral, C#, C# programming, example, example program, filled spiral, graphics, mathematics, spiral, Windows Forms programming
2 Comments
New Book: The Modern C# Challenge
My latest book, The Modern C# Challenge, is now available. It’s a collection of 100 programming challenges that let you test your ability in a wide variety of programming topics, many of which are not usually covered in traditional programming … Continue reading
Posted in algorithms, books, files, mathematics, puzzles
Tagged algorithms, books, C#, C# programming, combinations, cryptography, directories, dynamic programming, example, example program, factors, files, geometry, mathematics, permutations, prime factors, puzzles, randomization, recursion, simulations, statistics, The Modern C# Challenge, Windows Forms programming, yield
1 Comment
Draw an Archimedes spiral in C#
An archimedes spiral is defined by the polar coordinate equation r = A * θ. It’s just as simple as that, and this would be a significantly shorter post except for one question: how do you know how big you … Continue reading
Posted in algorithms, graphics, mathematics
Tagged algorithms, Archimedes spiral, C#, C# programming, example, example program, graphics, mathematics, spiral, Windows Forms programming
2 Comments