LINQ Queries

Chaining methods

First FirstOrDefault Last LastOrDefault Single and SingleOrDefault

09Defining a variable inside a Linq query let keyword

Range and Repeat

SelectMany Flattening a sequence of sequences

Query collection by type cast elements to type

Enumerating the Enumerable

Using SelectMany instead of nested loops

Using Range with various Linq methods

Query Ordering - OrderBy ThenBy OrderByDescending ThenByDescending

Any and FirstOrDefault - best practice

GroupBy one or multiple fields

ElementAt and ElementAtOrDefault

Joining multiple sequences

Joining on multiple keys

GroupBy Sum and Count

Count and LongCount

Linq Quantifiers

Build your own Linq operators for IEnumerableT

GroupJoin with outer range variable

Incrementally building a query

Select - Transforming elements

OrderByDescending

Select with FuncTSource int TResult selector - Use to get ranking of elements

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