|
|
Visual
Basic type |
Common
language runtime type structure |
Nominal
storage allocation |
Value
range |
|
Boolean |
Boolean |
Depends on implementing
platform |
True or False |
|
Byte |
Byte |
1 byte |
0 through 255 (unsigned) |
|
Char (single character) |
Char |
2 bytes |
0 through 65535 (unsigned) |
|
Date |
DateTime |
8 bytes |
0:00:00 (midnight) on January 1, 0001 through 11:59:59
PM on December 31, 9999 |
|
Decimal |
Decimal |
16 bytes |
0 through +/-79,228,162,514,264,337,593,543,950,335
(+/-7.9...E+28) † with no decimal point; 0 through +/-7.9228162514264337593543950335 with 28 places to the
right of the decimal;
smallest nonzero number
is +/-0.0000000000000000000000000001 (+/-1E-28) † |
|
Double (double-precision floating-point) |
Double |
8 bytes |
-1.79769313486231570E+308
through -4.94065645841246544E-324 † for negative values;
4.94065645841246544E-324
through 1.79769313486231570E+308 † for positive values |
|
Integer |
Int32 |
4 bytes |
-2,147,483,648 through
2,147,483,647 (signed) |
|
Long (long integer) |
Int64 |
8 bytes |
-9,223,372,036,854,775,808
through 9,223,372,036,854,775,807 (9.2...E+18 †) (signed) |
|
Object |
Object (class) |
4 bytes on 32-bit
platform
8 bytes on 64-bit
platform |
Any type can be stored
in a variable of type Object |
|
SByte |
SByte |
1 byte |
-128 through 127 (signed) |
|
Short (short integer) |
Int16 |
2 bytes |
-32,768 through 32,767
(signed) |
|
Single (single-precision floating-point) |
Single |
4 bytes |
-3.4028235E+38 through
-1.401298E-45 † for negative values;
1.401298E-45 through
3.4028235E+38 † for positive values |
|
String (variable-length) |
String (class) |
Depends on implementing
platform |
0 to approximately
2 billion Unicode characters |
|
UInteger |
UInt32 |
4 bytes |
0 through 4,294,967,295
(unsigned) |
|
ULong |
UInt64 |
8 bytes |
0 through 18,446,744,073,709,551,615
(1.8...E+19 †) (unsigned) |
|
User-Defined (structure) |
(inherits from ValueType) |
Depends on implementing
platform |
Each member of the
structure has a range determined by its data type and independent of the ranges of the other members |
|
UShort |
UInt16 |
2 bytes |
0 through 65,535 (unsigned) |
|
Asc |
AscW |
Chr |
ChrW |
|
Filter |
Format |
FormatCurrency |
FormatDateTime |
|
FormatNumber |
FormatPercent |
GetChar |
InStr |
|
InStrRev |
Join |
LCase |
Left |
|
Len |
LSet |
LTrim |
Mid |
|
Replace |
Right |
RSet |
RTrim |
|
Space |
Split |
StrComp |
StrConv |
|
StrDup |
StrReverse |
Trim |
UCase |
|
