-
Recent Posts
-
Recent Comments
- RodStephens on Use a standard Windows dialog to let the user select folders in C#
- Yohann on Use a standard Windows dialog to let the user select folders in C#
- Fred on Draw and move polygons snapping them to a grid in C#
- RodStephens on Display the local time and GMT in C#
- RodStephens on Draw a 3D surface with WPF, XAML, and C#
Archives
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- 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: extensions
Make bitmap extension methods that resize bitmaps in C#
The post Resize pictures in a directory to specific widths or heights in C# lets you resize all of the pictures in a directory. This example extracts the key method that resizes files and places it in a new Bitmap … Continue reading
Use string extension methods to validate Social Security numbers in C#
This example defines three extension methods that return true if strings contain Social Security numbers. Recall that you must add extension methods to a static class and that the methods must be static. This example begins by defining a Matches … Continue reading
Add an extension method to the Graphics class in C#
For some strange reason, the Graphics class’s DrawRectangle method cannot take a RectangleF as a parameter. It can take a Rectangle or four float values, and the FillRectangle method can take a RectangleF as a parameter, but the DrawRectangle method … Continue reading
Make string extensions to URL encode and decode strings in C#
When you URL encode a string, you convert special characters into numeric sequences thath are safe to use in a URL. When you URL decode a string, you reverse the process. The following code creates extension methods for the string … Continue reading
Convert between byte arrays and hexadecimal strings in C#
This example uses extension methods to convert between byte arrays and hexadecimal strings. It adds a ToHex extension method to the byte[] type and a ToBytes extension method to the string class. To create an extension method, create a public … Continue reading
Posted in algorithms, cryptography, extensions, strings
Tagged algorithms, byte array, byte array to hexadecimal string, C#, C# programming, converrt byte array, convert, convert hexadecimal string, cryptography, example, example program, extensions, hexadecimal string to byte array, string extentions, strings, Windows Forms programming
2 Comments
Use the BitConverter class to write extension methods to convert between byte arrays and strings of hexadecimal values in C#
This is a new version of the example Write extension methods to convert between byte arrays and strings of hexadecimal values in C# that takes a slightly different approach. The following code shows the new versions of the extension methods. … Continue reading
Posted in extension methods, extensions, strings
Leave a comment