StringUtilities..::..IsNullOrWhiteSpace Method (Nullable<(Of <(<'String>)>)>, String)

Returns replacementValue if value is null, empty, or consists only of white-space characters; otherwise returns value. Mimics SQL Server's ISNULL function for strings, but uses IsNullOrWhiteSpace semantics.

public static string IsNullOrWhiteSpace(
	this Nullable<string> value,
	string replacementValue
)

<ExtensionAttribute> _
Public Shared Function IsNullOrWhiteSpace ( _
	value As Nullable(Of String), _
	replacementValue As String _
) As String