-
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
- RodStephens on Use a TreeView to display property pages or option pages in C#
- oghenez on Use a TreeView to display property pages or option pages in C#
- CodeNoob on Use statement lambdas in C#
- ylmz on Resize images in C#
- Madhur Bhorali on Make a stopwatch in C#
Archives
- January 2022
- December 2021
- November 2021
- October 2021
- July 2021
- June 2021
- March 2021
- February 2021
- 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
Monthly Archives: April 2017
Enumerate TreeView nodes in C#
The previous two posts show two ways you can enumerate TreeView nodes that are checked. The idea is to recursively crawl over the tree’s nodes and pick out the checked ones. Unfortunately that method isn’t easily extendable. For example, if … Continue reading
Posted in algorithms, controls, recursion, user interface
Tagged algorithms, C#, C# programming, checked TreeView nodes, controls, example, example program, recursion, recursively, TreeNode, TreeNodeCollection, TreeView, TreeView nodes, user interface, Windows Forms programming, yield, yield return
Comments Off on Enumerate TreeView nodes in C#
Yield checked TreeView nodes in C#
The previous example used recursion to traverse the nodes in a TreeView control and fill a list with the nodes that are checked. This example uses a slightly different approach. It traverses the TreeView control’s nodes and uses the yield … Continue reading
Posted in algorithms, controls, recursion, user interface
Tagged algorithms, C#, C# programming, checked TreeView nodes, controls, example, example program, recursion, recursively, TreeNode, TreeNodeCollection, TreeView, TreeView nodes, user interface, Windows Forms programming
Comments Off on Yield checked TreeView nodes in C#
Make a list of checked TreeView nodes in C#
If you set a TreeView control’s CheckBoxes property to true, then the control displays boxes that the user can check to select nodes. In that case you will probably need to find the checked TreeView nodes at some point. Strangely … Continue reading
Posted in algorithms, controls, recursion, user interface
Tagged algorithms, C#, C# programming, checked TreeView nodes, controls, example, example program, recursion, TreeNode, TreeNodeCollection, TreeView, TreeView nodes, user interface, Windows Forms programming
Comments Off on Make a list of checked TreeView nodes in C#
Display tooltips for TreeView nodes in C#
At design time, I added a TreeView control to the form. I also added an associated ImageList control to hold images for the TreeView control’s nodes, and I set the TreeView control’s ImageList property to the ImageList control. Finally I … Continue reading
Posted in controls, user interface
Tagged C#, C# programming, controls, example, example program, GetNodeAt, mouse position, recursion, recursive, tool tips, tooltips, TreeView, user interface, Windows Forms programming
1 Comment
Compare sorting algorithms in C#, article 5 of 5
Countingsort The discussion of Quicksort in my previous post mentions that the fastest possible sorting algorithms that use comparisons take on the order of N * log(N) steps. Countingsort does not use comparisons so it is not bound by that … Continue reading
Compare sorting algorithms in C#, part 4 of 5
Quicksort Quicksort is a recursive algorithm that uses a divide-and-conquer technique. While the list of items to be sorted contains at least two items, Quicksort divides it into two sublists and recursively calls itself to sort the sublists. The Quicksort … Continue reading
Posted in algorithms, performance
Tagged algorithms, Array.Sort, bubblesort, C#, C# programming, countingsort, example, example program, quicksort, selectionsort, sort arrays, sort values, sorting, Windows Forms programming
3 Comments
Compare sorting algorithms in C#, part 3 of 5
Selectionsort Selectionsort is a very simple algorithm. First you search the list for the smallest item. Then you swap that item with the item at the top of the list. Next you find the second smallest item and swap it … Continue reading
Posted in algorithms, performance
Tagged algorithms, Array.Sort, bubblesort, C#, C# programming, countingsort, example, example program, performance, quicksort, selectionsort, sort arrays, sort values, sorting, Windows Forms programming
Comments Off on Compare sorting algorithms in C#, part 3 of 5
Compare sorting algorithms in C#, part 2 of 5
Bubblesort Bubblesort is a specialized algorithm designed for sorting items that are already mostly in sorted order. If only one or two items in your list are out of order, Bubblesort is very fast. If the items in your list … Continue reading
Posted in algorithms, performance
Tagged algorithms, Array.Sort, bubblesort, C#, C# programming, countingsort, example, example program, performance, quicksort, selectionsort, sort arrays, sort values, sorting, Windows Forms programming
Comments Off on Compare sorting algorithms in C#, part 2 of 5
Compare sorting algorithms in C#, post 1 of 5
This post begins a series of articles about sorting algorithms. Much of the text originally appeared in the December 1995 issue of Visual Basic Developer magazine, a publication that seems to no longer exist. All of these posts include the … Continue reading