The System.Linq namespace provides classes and interfaces that support queries that use vbteclinqext.
Remarks
The System.Linq namespace is in the System.Core assembly (in System.Core.dll).
The System.Linq.Enumerable class contains vbteclinq standard query operators that operate on objects that implement IEnumerable`1.
The System.Linq.Queryable class contains vbteclinq standard query operators that operate on objects that implement System.Linq.IQueryable`1.
For information about LINQ to SQL, see LINQ to SQL.
Classes
| Type | Reason |
|---|---|
| Enumerable |
Provides a set of static (Shared in Visual Basic) methods for querying objects that implement IEnumerable`1. |
| EnumerableExecutor |
Represents an expression tree and provides functionality to execute the expression tree after rewriting it. |
| EnumerableExecutor<T> |
Represents an expression tree and provides functionality to execute the expression tree after rewriting it. |
| EnumerableQuery |
Represents an IEnumerable as an System.Linq.EnumerableQuery data source. |
| EnumerableQuery<T> |
Represents an IEnumerable`1 collection as an System.Linq.IQueryable`1 data source. |
| IGrouping<TKey,TElement> |
Represents a collection of objects that have a common key. |
| ILookup<TKey,TElement> |
Defines an indexer, size property, and Boolean search method for data structures that map keys to IEnumerable`1 sequences of values. |
| IOrderedEnumerable<TElement> |
Represents a sorted sequence. |
| IOrderedQueryable |
Represents the result of a sorting operation. |
| IOrderedQueryable<T> |
Represents the result of a sorting operation. |
| IQueryable |
Provides functionality to evaluate queries against a specific data source wherein the type of the data is not specified. |
| IQueryable<T> |
Provides functionality to evaluate queries against a specific data source wherein the type of the data is known. |
| IQueryProvider |
Defines methods to create and execute queries that are described by an System.Linq.IQueryable object. |
| Lookup<TKey,TElement> |
Represents a collection of keys each mapped to one or more values. |
| OrderedParallelQuery<TSource> |
Represents a sorted, parallel sequence. |
| ParallelEnumerable |
Provides a set of methods for querying objects that implement ParallelQuery{TSource}. This is the parallel equivalent of System.Linq.Enumerable. |
| ParallelExecutionMode |
The query execution mode is a hint that specifies how the system should handle performance trade-offs when parallelizing queries. |
| ParallelMergeOptions |
Specifies the preferred type of output merge to use in a query. In other words, it indicates how PLINQ should merge the results from the various partitions back into a single result sequence. This is a hint only, and may not be respected by the system when parallelizing all queries. |
| ParallelQuery |
Represents a parallel sequence. |
| ParallelQuery<TSource> |
Represents a parallel sequence. |
| Queryable |
Provides a set of static (Shared in Visual Basic) methods for querying data structures that implement System.Linq.IQueryable`1. |