Aggregation
Aggregate, Average, Count, LongCount, Max, Min, Sum
Conversion
AsEnumerable, Cast, OfType, ToArray, ToDictionary, ToList, ToLookup
Element
ElementAt, ElementAtOrDefault, First, FirstOrDefault, Last, LastOrDefault, Single, SingleOrDefault
ElementAt
ElementAtOrDefault
First (simple)
First (conditional)
FirstOrDefault
Last
LastOrDefault (simple)
LastOrDefault (conditional)
Single
SingleOrDefault
Generation
DefaultIfEmpty, Empty, Range, Repeat
Grouping
GroupBy
Join
GroupJoin, Join
Ordering
OrderBy, OrderByDescending, Reverse, ThenBy, ThenByDescending
OrderBy (simple - numbers)
OrderBy (simple - dates)
OrderBy (simple - objects)
OrderByDescending
Reverse
ThenBy
ThenByDescending
Other
Concat, SequenceEqual, Zip
Partitioning
Skip, SkipWhile, Take, TakeWhile
Projection
Select, SelectMany
Quantifiers
All, Any, Contains
Restriction
Where
Set
Distinct, Except, Intersect, Union
Close
AsEnumerable: casts a collection to IEnumerable of same type.
| AsEnumerable: casts a collection to IEnumerable of same type. |
| AsEnumerable: casts a collection to IEnumerable of same type. |
| This Lambda Expression sample casts array of strings to its corresponding IEnumerable. |
| This Lambda Expression sample casts array of strings to its corresponding IEnumerable. |
// A Query Expression cannot be constructed for AsEnumerable() in C#. // Consider using a Lambda Expression instead.
' A Query Expression cannot be constructed for AsEnumerable() in VB.NET. ' Consider using a Lambda Expression instead.
// A Query Expression cannot be constructed for AsEnumerable() in F#. // Consider using a Lambda Expression instead.
static void Sample_AsEnumerable_Lambda()
{
string[] names = { "John", "Suzy", "Dave" };
var result = names.AsEnumerable();
Debug.WriteLine("Iterating over IEnumerable collection:");
foreach (var name in result)
Debug.WriteLine(name);
}
Output: Iterating over IEnumerable collection: John Suzy Dave
Private Shared Sub Sample_AsEnumerable_Lambda()
Dim names As String() = {"John", "Suzy", "Dave"}
Dim result = names.AsEnumerable()
Debug.WriteLine("Iterating over IEnumerable collection:")
For Each name In result
Debug.WriteLine(name)
Next
End Sub
Output: Iterating over IEnumerable collection: John Suzy Dave
let Sample_AsEnumerable_Lambda() =
let names = [|"John"; "Suzy"; "Dave"|]
let result = names.AsEnumerable()
Debug.WriteLine(sprintf "Iterating over IEnumerable collection:")
for name in names do
Debug.WriteLine(sprintf "%s" name)
Output: Iterating over IEnumerable collection: John Suzy Dave