感叹号!!)在VB.NET

    Dim singleVar! = 1.2!
    Dim doubleVar# = 1.2#
    Dim decimalVar@ = 1.2@
    Dim integerVar% = 12%
    Dim longVar& = 12&
    Dim stringVar$ = "12"

    Function ReturnsString$(ByVal takesLong&)

Single Data Type (Visual Basic)

MSDN

$ : String
% : Integer (Int16)
& : Long (Int32)
! : Single
# : Double
@ : Decimal

&H : Hex
&O : Octal

reference

reference

S : Short (Int16)
I : Integer (Int32)
L : Long (Int64)
F : Single
R : Double
D : Decimal