HasLength(TCollection) Method (ConditionValidator(TCollection), Int32)

CuttingEdge.Conditions

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Checks whether the given value has the number of elements as specified by numberOfElements. An exception is thrown otherwise. When the value is a null reference, it is considered to have 0 elements.

Namespace: CuttingEdge.Conditions
Assembly: CuttingEdge.Conditions (in CuttingEdge.Conditions.dll)

Syntax

Visual Basic (Declaration)
Public Shared Function HasLength(Of TCollection As IEnumerable) ( _ validator As ConditionValidator(Of TCollection), _ numberOfElements As Integer _ ) As ConditionValidator(Of TCollection)

C#
public static ConditionValidator<TCollection> HasLength<TCollection>( ConditionValidator<TCollection> validator, int numberOfElements ) where TCollection : IEnumerable

Visual C++
public: generic<typename TCollection> where TCollection : IEnumerable static ConditionValidator<TCollection>^ HasLength( ConditionValidator<TCollection>^ validator, int numberOfElements )

JavaScript
JavaScript does not support generic types or methods.

Parameters

validator: Type: CuttingEdge.Conditions..::.ConditionValidator<(Of <(TCollection>)>)
The ConditionValidator<(Of <(T>)>) that holds the value that has to be checked.

numberOfElements: Type: System..::.Int32
The number of elements the collection should contain.

Type Parameters

TCollection: The type of the value to check.

Return Value

The specified validator instance.

Exceptions

Exception	Condition
System..::.ArgumentException	Thrown when the Value of the specified validator does not contain the number of elements as specified with the numberOfElements argument, while the specified validator is created using the Requires extension method.
System..::.ArgumentNullException	Thrown when the Value of the specified validator is a null reference, while numberOfElements is bigger than 0, while the specified validator is created using the Requires extension method.
CuttingEdge.Conditions..::.PostconditionException	Thrown when the Value of the specified validator does not contain the number of elements as specified with the numberOfElements argument, while the specified validator is created using the Ensures extension method.