ExtensionMethods.ToMultiValueDictionary(TKey, TValue) Method

ExtensionMethodsToMultiValueDictionaryTKey, TValue Method

Converts an enumerable into a MultiValueDictionary. Similar to ToDictionary however this time the returned type is a MultiValueDictionary.

Namespace: SD.Tools.Algorithmia.GeneralDataStructures
Assembly: SD.Tools.Algorithmia (in SD.Tools.Algorithmia.dll) Version: 1.2.0.0 (1.2.16.0406)

Syntax

Copy

public static MultiValueDictionary<TKey, TValue> ToMultiValueDictionary<TKey, TValue>(
	this IEnumerable<TValue> source,
	Func<TValue, TKey> keySelectorFunc
)

<ExtensionAttribute>
Public Shared Function ToMultiValueDictionary(Of TKey, TValue) ( 
	source As IEnumerable(Of TValue),
	keySelectorFunc As Func(Of TValue, TKey)
) As MultiValueDictionary(Of TKey, TValue)

Parameters

source: Type: System.Collections.GenericIEnumerableTValue
The source.
keySelectorFunc: Type: SystemFuncTValue, TKey
The key selector func.

Type Parameters

TKey: The type of the key.
TValue: The type of the value.

Return Value

Type: MultiValueDictionaryTKey, TValue
MultiValueDictionary with the values of source stored under the keys retrieved by the keySelectorFunc which is applied to each value in source, or null if source is null

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableTValue. 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).

Reference

ExtensionMethods Class

SD.Tools.Algorithmia.GeneralDataStructures Namespace