Both Last() and LastOrDefault() will fetch the last occurrence of a value. But the major difference between Last() and LastOrDefault() is that Last() will throw an exception if there is no result data for the supplied criteria whereas LastOrDefault() will return the default value (null) if there is no result ... Read More

Yield keyword helps to do custom stateful iteration over a collection. Meaning when we use yield keyword the control moves back and forth from the caller function to source and vice versa.Example Live Demousing System; using System.Collections.Generic; namespace DemoApplication {    class Program {       static List numbersList = ... Read More

Generics allows us to define a class with placeholders for the type of its fields, methods, parameters, etc. Generics replace these placeholders with some specific type at compile time. A generic can be defined using angle brackets . A primary limitation of collections is the absence of effective type checking. ... Read More

While copying the entire contents of directory, it is more important that we have copy its sub directories and the related files.ExampleLet us consider demo source directory having sub directories and files like below. Below is the demo target directory which is empty initially.using System; using System.IO; namespace DemoApplication {   ... Read More

Let us take we have to eliminate the line breaks, space and tab space from the below string.eliminate.jpgExampleWe can make use of Replace() extension method of string to do it. Live Demousing System; namespace DemoApplication {    class Program {       static void Main(string[] args) {       ... Read More

If the collection is a List, then we can make use of ForEach extension method which is available as part of LINQ.Example Live Demousing System; using System.Collections.Generic; namespace DemoApplication {    class Program {       static void Main(string[] args) {          List fruits = new List ... Read More

Convert a string representation of number to an integer, using the int.Parse or Convert.ToInt32 method in C#. If the string cannot be converted, then the int.Parse or Convert.ToInt32 method returns an exceptionConvert.ToInt32 allows null value, it doesn't throw any errors Int.parse does not allow null value, and it throws an ... Read More

For deleting all the folders and its respective directories we can make us System.IO namespace available in C#. The DirectoryInfo() class provides the details of all sub directories and file in a directory.ExampleLet us consider a directory Demo having two sub directories and has some files like below.using System.IO; namespace ... Read More

We can make use of Reflection to fetch a property value dynamically.Reflection provides objects (of type Type) that describe assemblies, modules and types. We can use reflection to dynamically create an instance of a type, bind the type to an existing object, or get the type from an existing object ... Read More

In .Net, every string has a character set and encoding. A character encoding tells the computer how to interpret raw zeroes and ones into real characters. It usually does this by pairing numbers with characters. Actually, it is the process of transforming a set of Unicode characters into a sequence ... Read More