LINQ provides two syntax for writing queries. Query Syntax Query syntax is like SQL like query syntax. Query syntax is easier to read and write than Method syntax. But Query syntax does not support all query operators of LINQ. A query syntax must begin with a from clause. The from …
LINQ provides more than 50 query operators for different functionalities. Every query operator is an extension method. These operators can be categorized into following one: Operator Category LINQ Query Operators Names Filtering Where, OfType Sorting OrderBy, OrderByDescending, ThenBy, ThenByDescending Set Except, Intersect, Union, Distinct Quantifier All, Any, Contains Projection Select, …
Filtering operators are used to select only those elements from sequence that satisfy a condition. For example, suppose we have ten names in a collection sequence and we have to filter out those names that start with “K”. Filtering Operators Description Where Filter elements based on the condition. OfType This …
LINQ where operator comes in Filtering operators category. Here is a list of all LINQ Operators. Where operator filter the list based on some given criteria. Where operator is an extension method which accept a Func delegate as a parameter. Func accept only a single argument element. An element is passed …
OfType comes in Filtering operator category. Here is list of all Query Operators. LINQ OfType operator filter the objects from a collection based on Types. In a collection, we have multiple elements of different Types and we have to select only those objects from the collection that are of specific Type. C# Example of OfType …
LINQ OrderBy operator comes first in LINQ Sorting Operators. OrderBy operator sort the sequence (collection) based on particular property in ascending order. We can use OrderBy operator both in Query Syntax and Method Syntax. Below is the syntax of OrderBy operator. As shown in the above syntax, this operator take …
LINQ ThenBy Operator is used when we want to sort the elements in a collection by using multiple properties in ascending order. This operator must use after OrderBy or OrderByDescending operator. First OrderBy operator sort the collection based on a single property and then we can use ThenBy operator to …
LINQ OrderByDescending operator sort the elements in a sequence in descending order. You can find LINQ sorting operators list here. Below is the syntax of OrderByDescending operator. As shown in above syntax, OrderByDescending is an extension method which takes a single element and return property name on which we want …
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 …
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 …