C# Versions and Features

C# versions C# 1 comes in 2002 with .NET framework 1.0 and Visual Studio 2002 C# 2 comes in 2005 with .NET framework 2.0 and Visual Studio 2005 C# 3 comes in 2008 with .NET framework 2.0 and Visual Studio 2008 C# 4 comes in 2010 with .NET framework 4.0 and Visual Studio 2010 C# …

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Introduction to Design Patterns

Design patterns is an essential concept in software engineering. Every developer should know about Design patterns and how to apply these patterns in your project. Design Patterns are solutions to some common software design problems. These problems are the recurring design problems that software developers often faced during the development. Design patterns …

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C# params

C# params allows you to design a method which accepts variable number of parameters. These parameters are stored in an array and available to called method. static void DoWork(params int[] arr) { if (arr != null) { foreach (var i in arr) { Console.WriteLine(i); } } } There are two ways …

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ref vs out parameters

This post is about difference between ref and out parameters. C# provides three keywords when you defining a method signature. These keywords are: params ref out By default, method arguments are passed by value. That means calling method pass a duplicate copy of data to the called method. If called …

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C# Generic Methods

In my previous post, I explained about Generics. C# also provides generic methods. We can create a method that defers the parameter data type until the method is called. These parameters are called type parameters, which means we can pass the actual data type later. Below is an example of …

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C# Generics

Generics are introduced in C# 2.0. It is the most powerful features of C#. In C# 1.0, when we design a class that use other types that is not known at defining the structure of the class, then type should be an object type. In the class, we have to …

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C# ArrayList

C# ArrayList is a non-generic dynamic size collection class. ArrayList class exists in System.Collections namespace. ArrayList are dynamic means we can add any number of items without specifying the size of it. ArrayList vs Array ArrayList and Array looks same. But there are some major differences between them. Differences are: …

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C# Hashtable

C# Hashtable class is a collection class where we can store data in the key/value pair. Hashtable is not type-safe. Hashtable is not generic and both key and value are based on object type. Hashtable is used to store unique keys data. If we try to assign value to already used key, …

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