Never Too Old To Learn
Learning While Aging
Never Too Old To Learn
General

Data Type Summary (Visual Basic)

Published
Visual Basic type Common language runtime type structure Nominal storage allocation Value range
Boolean Boolean Depends on implementing platform TrueFalse
Byte Byte 1 byte 0 through 255 (unsigned)
Char (single character) Char 2 bytes 0 through 65535 (unsigned)
Date   class=SpellE>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) nt64 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)

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