-
Recent Books:
![[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)
![[C# 24-Hour Trainer]](http://www.csharphelper.com/csharp24hr_2e_79x100.jpg)
![[Beginning Software Engineering]](http://www.csharphelper.com/sw_eng_tiny.png)
![[C# 5.0 Programmer's Reference]](http://www.csharphelper.com/csharp_prog_ref_80x100.png)
![[Essential Algorithms: A Practical Approach to Computer Algorithms]](http://www.csharphelper.com/essential_algs_81x100.jpg)
Recent Videos:
![[Mastering Events and Delegates in C#]](http://www.csharphelper.com/mastering_events_61_100.png)
![[Using Interfaces in C#]](http://www.csharphelper.com/using_interfaces_60_100.png)
![[Learning Data Structures and Algorithms]](http://www.csharphelper.com/algs_video_tiny.png)
![[Learning Visual Basic .NET]](http://www.csharphelper.com/vb_video_tiny.png)
-
Recent Posts
-
Recent Comments
- Why you should study algorithms (plus a free book drawing) - C# HelperC# Helper on Book Drawing: The Modern C# Challenge
- charles on Make a 3D globe in WPF and C#
- RodStephens on Give an image a transparent background in C#
- kaliprasad m on Give an image a transparent background in C#
- RodStephens on Graph points in WPF and C#
Archives
- 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: internet
Get a weather forecast from openweathermap.org in C#
This example displays a weather forecast from openweathermap.org. To get a forecast or other data, you build a URL describing your request and navigate to it. You then parse the returned XML or JSON data to see what openweathermap.org has … Continue reading
Posted in internet, web, XML
Tagged C#, C# programming, example, example program, forecasts, internet, JSON, weather, weather forecast, web, Windows Forms programming, XML
Leave a comment
Generate a random password in C#
As I mentioned in a recent post, you should always use a strong password for every login. Remember, a computer can perform millions or billions of operations per second, so your daughter’s birthday or the name of your son’s guinea … Continue reading
Posted in algorithms, cryptography, internet
Tagged algorithms, C#, C# programming, cryptography, example, example program, internet, password, password generator, Windows Forms programming
Leave a comment
Why Twitter recently wanted you to change your password
A few days ago, Twitter asked all of its users to change their passwords. The reason they did that was that they found a bug in their system that made an internal log file store passwords in an unencrypted form. … Continue reading
Posted in cryptography, internet, miscellany
Tagged C#, C# programming, cryprography, encryption, example, example program, internet, miscellany, password manager, passwords, Twitter, Windows Forms programming
Leave a comment
See if the internet is available in C#
There are many ways you can test your network to see if the internet is available. Some methods may indicate that the network is connected if your local network is available even though the internet is not. Even if you … Continue reading
Blank the WebBrowser control in C#
If a program displays a web page in a WebBrowser control and then that page become irrelevant to the program, you may want to blank the control. Doing that is as easy as making the control navigate to the special … Continue reading
Download and display a text file whenever a program starts in C#
When this example starts, it downloads a file from the internet and displays it. You could do something similar to display a message of the day or announcements for your program. The program uses the following Load event handler to … Continue reading
Posted in files, internet, web
Tagged C#, C# programming, download, download files, example, example program, files, internet, web, Windows Forms programming
Leave a comment
Display the Astronomy Picture of the Day on the desktop in C#
This example combines the techniques from the following two posts: Download the Astronomy Picture of the Day in C# Set the Windows desktop picture in C# This example uses two settings, LastLoadTime and LastUrl, to determine whether it is a … Continue reading
Posted in graphics, image processing, internet, system
Tagged Astronomy Picture of the Day, C#, C# programming, desktop image, desktop picture, download, download images, download pictures, example, example program, graphics, image processing, internet, system, Windows Forms programming
Leave a comment
Download the Astronomy Picture of the Day in C#
Each day the Astronomy Picture of the Day web page does exactly what you would expect: it displays a different astronomy picture. The pictures include planets, nebulae, spacecraft, and other astronomy-related images, and the page includes an explanation of the … Continue reading
Map between host names and IP addresses in C#
When you enter a host name and click Go, the program uses the following code to look up the host and display the IP addresses associated with it. using System.Net; … // Display the entered host’s IP address. private void … Continue reading
See if Internet Explorer uses a proxy in C#
This example determines whether the system has Internet Explorer configured to use a proxy. Internet Explorer lets you specify proxy settings. In the Tools menu, select Internet Options. On the Connections tab, click the LAN Settings button. The goal of … Continue reading
Posted in internet, network, system
Tagged C#, C# programming, example, example program, internet, Internet Explorer, network, proxy, proxy settings, system, Windows Forms programming
Leave a comment