IsNullOrWhiteSpace Method (ConditionValidator(String))

CuttingEdge.Conditions

Checks whether the given value is null (Nothing in Visual Basic), empty, or consists only of white-space characters.

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

Syntax

Visual Basic (Declaration)
Public Shared Function IsNullOrWhiteSpace ( _
	validator As ConditionValidator(Of String) _
) As ConditionValidator(Of String)
C#
public static ConditionValidator<string> IsNullOrWhiteSpace(
	ConditionValidator<string> validator
)
Visual C++
public:
static ConditionValidator<String^>^ IsNullOrWhiteSpace(
	ConditionValidator<String^>^ validator
)
JavaScript
CuttingEdge.Conditions.ValidatorExtensions.isNullOrWhiteSpace = function(validator);

Parameters

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

Return Value

The specified validator instance.

Exceptions

ExceptionCondition
System..::.ArgumentExceptionThrown when the Value of the specified validator is not null, not empty and does not consists only of white-space characters, while the specified validator is created using the Requires extension method.
CuttingEdge.Conditions..::.PostconditionExceptionThrown when the Value of the specified validator is not null, not empty and does not consists only of white-space characters, while the specified validator is created using the Ensures extension method.

See Also