IEnumerableExtensionContainsGroupTSource Method

Indicates whether values contains an item that has the specified Group identifier.

Definition

Namespace: FolkerKinzel.VCards.Extensions
Assembly: FolkerKinzel.VCards (in FolkerKinzel.VCards.dll) Version: 8.0.1+a91cc3f0fd39aeb548e16006a60ca9dd10a304a2

C#

public static bool ContainsGroup<TSource>(
	this IEnumerable<TSource>? values,
	string? group,
	bool ignoreEmptyItems = true
)
where TSource : VCardProperty

VB

<ExtensionAttribute>
Public Shared Function ContainsGroup(Of TSource As VCardProperty) ( 
	values As IEnumerable(Of TSource),
	group As String,
	Optional ignoreEmptyItems As Boolean = true
) As Boolean

C++

public:
[ExtensionAttribute]
generic<typename TSource>
where TSource : VCardProperty
static bool ContainsGroup(
	IEnumerable<TSource>^ values, 
	String^ group, 
	bool ignoreEmptyItems = true
)

F#

[<ExtensionAttribute>]
static member ContainsGroup : 
        values : IEnumerable<'TSource> * 
        group : string * 
        ?ignoreEmptyItems : bool 
(* Defaults:
        let _ignoreEmptyItems = defaultArg ignoreEmptyItems true
*)
-> bool  when 'TSource : VCardProperty

Parameters

values IEnumerableTSource: The IEnumerableT of VCardProperty objects to search. The collection may be null, empty, or may contain null references.
group String: The Group identifier to compare with.
ignoreEmptyItems Boolean (Optional): Pass false to include empty items in the search. ("Empty" means that IsEmpty returns true.) null values will always be ignored.

Type Parameters

TSource: Generic type parameter that's constrained to be a class that's derived from VCardProperty.

Return Value

Boolean
true if an item with the specified Group identifier could be found in values, otherwise false.

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).

Remarks

The comparison of group identifiers is case-insensitive.