There are two kinds of data types in C#.
- Value Type ( Implicit data types , structs and enumeration)
- Reference Types ( objects, delegates )
Value types are passed to methods are passing an exact copy while Reference types are passed to method by passing only their reference ( handle) . Implicit data types are defined in the language core by the language vendor, while Explicit data types that are made by using or composing implicit data types.
Integral Types
| C# type | .Net type | Size in bytes | Description |
| byte | Byte | 1 | May contain integers from 0-255 |
| byte | SBte | 1 | Singed byte from -128 to 127 |
| short | Int16 | 2 | Ranges from -32,768 to 32,767 |
| ushort | UInt16 | 2 | Unsigned , ranges from 0 to 65,535 |
| int(default) | Int32 | 4 | Ranges from -2,147,483,648 to 2,147,483,647 |
| uint | UInt32 | 4 | Unsigned, ranges from 0 to 4,294,967,295 |
| long | Int64 | 8 | Ranges from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 |
| ulong | UInt64 | 8 | Unsigned, ranges from 0 to 18,446,744,073,709,551,615 |
Floating point Types
| Float | Single | 4 | Ranges from |
| double (default) |
Double | 8 |
Other Types
| bool | Boolean | 1 | Contains either true or false |
| char | Char | 2 | Contains any single Unicode character enclosed in single quotation mark such as ‘c’ |
| decimal | Decimal | 12 | Ranges from 1.0 |