DictionaryExtensionMethods.GetValueOrDefault(TKey, TValue) Method (IDictionary(TKey, TValue), TKey, Func(TValue))

DictionaryExtensionMethodsGetValueOrDefaultTKey, TValue Method (IDictionaryTKey, TValue, TKey, FuncTValue)

Tries to get the value with the specified key from the dictionary, and uses the passed default value provider to return a value if the key could not be found.

Namespace: Slash.Collections.Extensions
Assembly: Slash.Collections (in Slash.Collections.dll) Version: 1.0.6018.40177

Syntax

C++

Copy

public static TValue GetValueOrDefault<TKey, TValue>(
	this IDictionary<TKey, TValue> dictionary,
	TKey key,
	Func<TValue> defaultValueProvider
)

<ExtensionAttribute>
Public Shared Function GetValueOrDefault(Of TKey, TValue) ( 
	dictionary As IDictionary(Of TKey, TValue),
	key As TKey,
	defaultValueProvider As Func(Of TValue)
) As TValue

public:
[ExtensionAttribute]
generic<typename TKey, typename TValue>
static TValue GetValueOrDefault(
	IDictionary<TKey, TValue>^ dictionary, 
	TKey key, 
	Func<TValue>^ defaultValueProvider
)

[<ExtensionAttribute>]
static member GetValueOrDefault : 
        dictionary : IDictionary<'TKey, 'TValue> * 
        key : 'TKey * 
        defaultValueProvider : Func<'TValue> -> 'TValue

Parameters

dictionary: Type: System.Collections.GenericIDictionaryTKey, TValue
Dictionary to get the value from.
key: Type: TKey
Key of the value to get.
defaultValueProvider: Type: SystemFuncTValue
Default value provider to use to return a value if the key could not be found.

Type Parameters

TKey: Type of the dictionary keys.
TValue: Type of the dictionary values.

Return Value

Type: TValue
Value with the specified key, if found, and a value provided by defaultValueProvider otherwise.

Usage Note

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

DictionaryExtensionMethods Class

GetValueOrDefault Overload

Slash.Collections.Extensions Namespace