public static bool IsNumber(
	string source,
	bool isNegative = false
)

Public Shared Function IsNumber ( 
	source As String,
	Optional isNegative As Boolean = false
) As Boolean

public:
static bool IsNumber(
	String^ source, 
	bool isNegative = false
)

static member IsNumber : 
        source : string * 
        ?isNegative : bool 
(* Defaults:
        let _isNegative = defaultArg isNegative false
*)
-> bool