Show and Invert RGB Colors in C#

This post will demonstrate how to show and convert colors when the Red Green & Blue values of those colors are given. We simple use a function and supply the Red, Green and Blue components in the parameter list. We shall also see how to Invert a color. In the image below the text color is set by the user. The background color is automatically set which is the Invert of the Text color. See image below to have a look at the final output of our WinForms application:

Named Arguments in .Net C#

Named Arguments are an alternative way for specifying parameter values in function calls. They work so that the position of the parameters would not pose problems. Therefore it reduces the headache of remembering the positions of all parameters for a function. It also helps to avoid the excess overloading of functions that contain less or more of the same set of parameters. 

They work in a very simple way. When we call a function, we would write the name of the parameter before specifying a value for the parameter. In this way, the position of the argument will not matter as the compiler would tally the name of the parameter against the parameter value. This makes it unnecessary to remember the organisation of the parameters in the function definition. 

Optional Parameters in .Net

Optional Arguments were introduced in C# 4.0 and this article will show you how to use them. Optional Arguments are necessary when you specify functions that have a large number of arguments. It can cut down time by making you pass on argument values to the most needy parameters in a situation. 

Optional Arguments are what their name suggests i.e. even if you do not specify them, its perfectly OK. But it doesn't mean that they have not taken a value. In fact we specify some default values that the Optional Parameters take when values are not supplied in the function call. In this way we gain the functionality of easily setting values once and using these values several times as a default unless something different is needed. 

Printing a Windows Form to Printer and File in C#

The objective here is to print a Windows Form to the Printer or a File on the HDD. You can also have a Print Preview before you print a WinForm. See the Form below that we shall print. We will encounter one small problem i.e. the button, radio buttton and textbox are not required for printing. We only wish to print the written text written above in Green color. There is VS 2012 source code at the very end. See the code and explanations below the image:

Display all Files and Folders in a Directory in C#

You can easily list and display all the files and folders in a C# application using the DirectoryInfo class. First have a look at the application screenshot which uses this class to display the Files and Folders in a specified directory. All the Files and Folders are displayed in a ListView. 

Identify Any Key Pressed on Keyboard

Now you can capture any key pressed on the keyboard, not only restricted to the English or your language letters but also various other keys such as the Windows Key, Properties Key, F1, F2 and other function buttons, the Home, PageUp and PageDown etc. 

Draw a Bitmap Image on WinForm During Runtime

Would you like to draw a bitmap on the screen? Drawing on the WinForms is very easy using the Graphics() Class and Objects. You can draw any type of image by taking the image from your HDD and including file types like BMP, JPEG, PNG etc. Watch the screenshot of a file that is drawn to the WinForm:

Create a Web Browser in C#

This article shows you how to easily create a Web Browser with minimal standard functions containing all standard buttons like the Back, Forward Stop and Home buttons. See below image for more details:

How to Multithread in C#

This WinForms C# Application will show you the basics of creating and using a thread and a bit more. It will actually show you multiple threads working simultaneously. As you know that threads are meant to do multiple jobs at a time by utilizing the different logical cores of the CPU, we will use this to work the value of multiple Int64 variables. See the application screenshot when the application starts and look for the source code at the end:

Reading a Text File in C# through Stream Reader

This C# program shows you how you can load an external Text File from your Hard Disk into a Multi-Line TextBox. The procedure consists of creating the StreamWriter object to begin working which is the feature of this code.  Watch the image above.

Working With Enumerations in C#

.Net Enumeration Basics

Enumerations or simply Enums in short provide convenient ways to create and access named numeric constants. These constants can have custom Indexable values that represent each individual element. Unlike arrays, they can have values which are not incremental in steps of ‘1’. Also, these values can be of types other than integers (which is the default) such as bytes, Boolean etc.

A single Enumeration itself has a group of values associated with it. We create an Enum Object before attempting to use the functions that are offered. This value when used with a dot operator on an Enumeration gives the state of the Enumeration Object. When we initialize new Enums of a previously defined Enum, we don’t use the new operator. The new Enums are almost immediately created and initialized to an initial value within the Enum.

Create an Enum