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MongoEnumerableFirstNTSource, TKey, TResult Method (IEnumerableTSource, FuncTSource, TResult, TKey, FuncTKey, Int32)

Returns the first n results.

Namespace:  MongoDB.Driver.Linq
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242
Syntax
public static IEnumerable<TResult> FirstN<TSource, TKey, TResult>(
	this IEnumerable<TSource> source,
	Func<TSource, TResult> selector,
	TKey key,
	Func<TKey, int> n
)

Parameters

source
Type: System.Collections.GenericIEnumerableTSource
The source.
selector
Type: SystemFuncTSource, TResult
The selector.
key
Type: TKey
The key (needed to infer the key type and to determine the key serializer).
n
Type: SystemFuncTKey, Int32
The number of results to return.

Type Parameters

TSource
The source type.
TKey
The key type.
TResult
The result type.

Return Value

Type: IEnumerableTResult
The first n results.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also