-
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
- fabio on Serialize and deserialize multiple images in C#
- Clip an image to a polygon in C# - C# HelperC# Helper on Build a polygon selector class in C#
- RodStephens on Determine where a line intersects a circle in C#
- Riaan on Understand range areas in Excel VBA
- Chuck on Determine where a line intersects a circle 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
Monthly Archives: February 2016
Generate random data in an Access database in C#
This example shows how you can generate random data for students and their test scores in an Access database. I often build examples that manipulate databases. Those examples are more interesting if the database holds lots of data, but it’s … Continue reading
Posted in ADO.NET, algorithms, database
Tagged Access, ADO.NET, algorithms, C#, C# programming, database, example, example program, OLE DB, OleDbCommand, OleDbConnection, random, random data, randomization, Windows Forms programming
Leave a comment
Display master-detail data in a DataGrid in C#
At design time, I added the example’s Contacts.mdb database to the project, set its “Build Action” property to Content, and set its “Copy to Output Directory” property to “Copy if newer.” That way the database is copied into the executable … Continue reading
Posted in ADO.NET, controls, database
Tagged ADO.NET, binding, C#, C# programming, child, controls, data binding, DataAdapter, database, DataGrid, DataSet, DataTable, detail, example, example program, master, master/detail, master/detail relationship, master/detail relationships, OldDbDataAdapter, OleDbCommandBuilder, parent, parent/child, parent/child relationship, relationships, Windows Forms programming
1 Comment
Draw a recursive overlapping snowflake fractal in C#
The example Draw a recursive snowflake fractal in C# explains how to use an iterator and a generator to draw a snowflake fractal. This example uses the same technique with the initiator and generator shown in the second and … Continue reading
Draw a recursive von Koch snowflake fractal in C#
This example shows how to draw a von Koch snowflake fractal. It uses the same techniques described in the post Draw a recursive snowflake fractal in C#. The DrawSnowflake and DrawSnowflakeEdge methods are exactly the same as before. The … Continue reading
Posted in algorithms, drawing, fractals, graphics, mathematics
Tagged algorithms, C#, C# programming, drawing, example, example program, fractals, generator, graphics, initiator, mathematics, recursion, recursive, snowflake, snowflake curve, snowflake fractal, von Koch, von Koch fractal, von Koch snowflake, Windows Forms programming
Leave a comment
Draw a recursive snowflake fractal in C#
This program draws a recursive snowflake fractal by using an initiator and a generator to define the fractal’s shape. The initiator is a curve that represent the fractal’s basic shape. In this case, the initiator is the triangle shown … Continue reading
Make an Excel chart in C#
This example uses the following code to create an Excel chart in a new workbook. private void btnCreateChart_Click( object sender, EventArgs e) { // Get the Excel application object. Excel.Application excel_app = new Excel.ApplicationClass(); // Make Excel visible (optional). excel_app.Visible … Continue reading
Posted in Excel, interoperability, Office
Tagged C#, C# programming, chart, example, example program, Excel, Excel chart, Excel graph, interoperability, Office, Windows Forms programming
1 Comment
Graph mosquito populations in C#
The example Simulate mosquito populations in C# simulates a mosquito population. This example draws a graph showing the population during each generation. When it calculates the populations for a new generation, it stores them in the following lists. // Data … Continue reading
Posted in algorithms, animation, drawing, graphics, mathematics
Tagged algorithms, C#, C# programming, drawwing, example, example program, genetically modified mosquitoes, graph, graphics, graphing, mathematics, mosquito population, mosquitoes, population simulation, simulate, Windows Forms programming
Leave a comment
Simulate mosquito populations in C#
A team of researchers at the Imperial College London are trying a new approach to mosquito control. They’ve genetically modified male mosquitoes to produce offspring who are 95% male. After a few generations, the number of females in the population … Continue reading
Calculate a row of Pascal’s triangle in C#
Pascal’s triangle starts with a 1 at the top. To construct a new row for the triangle, you add a 1 below and to the left of the row above. After that, each entry in the new row is the … Continue reading
Print a Celsius to Fahrenheit conversion chart in C#
A friend of mine cooks a lot using Japanese cookbooks. Because ovens in the United States only display temperature in degrees Fahrenheit (someone should make that a switch on the oven), she needs to convert temperatures from Celsius to Fahrenheit. … Continue reading