C# reflection, interfaces, abstract class, generics, ref vs out, C# versions 4,5,6 and features.

Environment Setup - NUnit Tutorial

There are two steps in configure NUnit project environment: Configure Project with NUnit assemblies Setup TestRunners which show the results of NUnit test cases Configure Project with NUnit assemblies We always creates separate project when creating project for NUnit. According to naming conventions test project name should be [Project Under Test].[Tests]. For e...

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Introduction - NUnit Tutorial

NUnit is most popular tool for doing Unit Testing. Before start, we need to learn what is Unit Testing and why NUnit is a popular tool for doing unit testing. Unit Testing Every software is composed of various modules. Each module is composed of various classes. Classes composed of various functions. Function is the smallest unit of code in the application. When w...

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LINQ SelectMany Operator

SelectMany operator is used when we have a sequence of objects which has a collection property and we need to enumerate each item of child collection one by one. SelectMany operator comes under Projection operators category of LINQ Query Operators. Below is the syntax of SelectMany operator public static IEnumerable<TResult> SelectMany<TSource, TRe...

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LINQ Contains Operators

LINQ Contains operator is used to check whether an element is available in sequence (collection) or not. Contains operator comes under Quantifier Operators category in LINQ Query Operators. Below is the syntax of Contains operator. public static bool Contains<TSource>(this IEnumerable<TSource> source, TSource value); public static bool Contains<TSource&g...

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LINQ Any Operator

LINQ Any operator comes under Quantifier Operators category in LINQ Query operators. LINQ Any operator is used for two cases: Check whether sequence is blank or not. Check whether any single element in a sequence satisfy a given condition or not. Any operator is only available in Method syntax and not available in Query Syntax. Below is the s...

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LINQ All Operator

LINQ All operator is used to check whether all elements in a sequence (collection) satisfy a particular condition or not. LINQ All operator comes under Quantifier Operators category in LINQ Query Operators. Lets take an example, we have a collection A = { 3, 6, 9, 12 } and we have to check whether all elements in this sequence is divide by 3 or not. For this we use All opera...

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LINQ Distinct Operator

LINQ Distinct operator is used for removing duplicates elements from the sequence (list). Distinct operator comes under Set operators category in LINQ query operators. For example, we have one collection A = { 1, 2, 3, 3, 4, 4, 5}. In this collection 3 and 4 elements are repeated two times and we have to create a new sequence which takes these duplicates only one time. So we...

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LINQ Intersect Operator

LINQ Intersect operator is used to find common elements between two sequences (collections). Intersect opertor comes under Set operators category in LINQ Query operators. For example, we have two collections A = { 1, 2, 3 } and B = { 3, 4, 5 }. Intersect operator will find common elements in both sequences. { 3 } element is common in both sequences. So Intersect operato...

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LINQ Union Operator

LINQ Union operator is used for finding unique elements between two sequences (Collections). For example, suppose we have two collections A = { 1, 2, 3 }, and B = { 3, 4, 5 }. Union operator will find unique elements in both sequences. { 3 } element is available in both sequences. So union operator only takes one element in the result. C = { 1, 2, 3, 4, 5 }. Union operato...

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LINQ Except Operator

LINQ Except operator comes under Set operators category in LINQ. LINQ Set operators is used for compare two sequences (collections) and find common, missing and unique elements. You can find entire list of set operators here. Except operator compares two sequences (collections) classes and find those elements which are not present in second sequence. For examp...

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