vb.net data types

A, Numeric data types　　

Integer	4 bytes	Variables are stored as 32-bit integer, ranging from -2147483.648 to 2147483.648
Long	8 bytes	Variables are stored as 64-bit integer, ranging from -9223372036854775.808 to 9223372036854775.807
Short	2 bytes	Variables are stored as 16-bit integer, the range from -32768 to 32767
Single	4 bytes	Variables are stored as 32-bit floating-point value type, range: -3.402823E38 negative number to -1.401298E-45; a positive number 1.401298E-45 to 3.402823E38
Double	8 bytes	Variables are stored as 64-bit floating-point value type, range: -1.79769313486231E308 negative number to -4.94065645841247E-324; positive number 4.94065645841247E-324 to 1.79769313486231E308
Decimal	12 bytes	No decimal point is an integer ranging from -79228162514264337593543950335 to 79228162514264337593543950335