-
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
- bakedcat on Use WPF 3d techniques to draw a snowman with WPF and C#
- Krish Patel on Convert a string to proper case (title case) in C#
- Make a hexagonal montage of pictures in C# - C# HelperC# Helper on Clip an image to a polygon in C#
- Make a hexagonal montage of pictures in C# - C# HelperC# Helper on Draw a hexagonal grid in C#
- Find drawn characters under the mouse in C# - C# HelperC# Helper on Measure character positions when drawing long strings in C#
Archives
- 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
Tag Archives: DateTime
Use the Stopwatch class to time a program in C#
To measure elapsed time, you can save the current time with DateTime.Now and then compare it to a later time to see how much time has elapsed. The Stopwatch class in the System.Diagnostics namespace makes this a bit easier. It’s … Continue reading
Posted in performance
Tagged C#, C# programming, DateTime, example, example program, performance, StopWatch, Stopwatch class, TimeSpan, Windows Forms programming
Leave a comment
Determine whether a year is a leap year in C#
Detecting leap years is basically trivial because the DateTime data type provides an IsLeapYear method to do just this. The example uses the following code to display the leap years between the two entered dates. // List leap years between … Continue reading
Posted in miscellany, variables
Tagged C#, C# programming, dates, DateTime, example, example program, leap year, leap years, miscellany, variables, Windows Forms programming
Leave a comment
Compare performance looping over DateTime and integer variables in C#
The example Find Friday the Thirteenths in C# doesn’t really worry about performance. It uses integers to loop over the dates within a range. For every year between the start and end dates, the code considers the 13th of each … Continue reading
Posted in performance, syntax
Tagged C#, C# programming, date loop, dates, DateTime, example, example program, Friday the 13th, Friday the Thirteenth, integer, loop, loop over dates, performance, syntax, Windows Forms programming
Leave a comment
Find Friday the Thirteenths in C#
The following code shows how this example lists the Friday the Thirteenths between selected start and end dates. // List Friday the 13ths between the start and end dates. private void btnGo_Click(object sender, EventArgs e) { lstResults.Items.Clear(); // Get the … Continue reading
Posted in performance, syntax
Tagged C#, C# programming, dates, DateTime, example, example program, Friday the 13th, Friday the Thirteenths, loop over dates, performance, syntax, Windows Forms programming
1 Comment
Find elapsed time in years, months, days, hours, minutes, and seconds in C#
The TimeSpan structure represents an elapsed time. It has Days, Hours, Minutes, Seconds, and Milliseconds properties that tell you about the time that has passed. For example, if two dates are 3 days and 4 hours apart, then Days = … Continue reading
Posted in parsing, variables
Tagged C#, C# programming, Date, DateTime, days, elapsed time, example, example program, hours, milliseconds, minutes, months, parsing, seconds, TimeSpan, variables, Windows Forms programming, years
Leave a comment
Get the current time from the NIST server in C#
This example, courtesy of Adam Benson, shows how you can get the current time from the NIST atomic clock server. (I’ve reformatted it slightly to make it fit better on the blog page.) The key to the program is the … Continue reading
Posted in miscellany, system
Tagged atomic clock, C#, C# programming, date and time, DateTime, example, example program, get date, get time, miscellany, NIST, NIST time, system, time, Windows Forms programming
1 Comment
Use the DateTime class’s standard formatting methods in C#
The ToString and string.Format methods let you use formatting characters to format a DateTime value, but it’s not easy to remember all of the characters you might want to use. To make using standard formats easier, the DateTime class provides … Continue reading
Posted in formatting, strings
Tagged C#, C# programming, DateTime, example, example program, format strings, formatting, formatting methods, numeric formats, standard formats, standard formatting methods, standard numeric formats, strings, text formatting, ToString, Windows Forms programming
Leave a comment