Data Types in C#.

Data types in C# are fundamental building blocks that define the kind of data a variable can hold. As C# is a strongly typed language, variables and expressions must have consistent data types and type conversions are limited or controlled by the language rules. 

Before learning about different data types and their usage let us learn what is data type and why it is important.

What is Data Types?

In programming, data types specify the type of data that can be stored in a variable. They determine the size, format, and range of values that a variable can hold. C# provides a rich set of data types, which can be broadly categorized into two groups: 

• Value Types 
• Reference Types.

Value Types C#.

Value types represent data directly, and their values are stored directly in memory. When you work with a value type, you manipulate the actual data rather than a reference to it.

Here is the list of some common value types in C#:

• Integer Types: int, unit, short, ushort, long, ulong.  
• Floating-Point Types: float, double, decimal.
• Boolean Type: bool.
• Character Type: char.
• Enumerations: A user-defined value type that consists of a set of named integral constants. 
• Nullable Value Types: Allows value types to have a value of null in addition to their normal range of values.
• User-Defined Types: You can also define your own data types using classes and structs, making C# highly extensible and suitable for complex data modeling.

// Integer Types 
int myInt = 42;
uint myUInt = 12345U;
short myShort = -12345;
ushort myUShort = 56789;
long myLong = 123456789012345L;
ulong myULong = 987654321012345UL;

// Floating-Point Types
float myFloat = 3.1415927f;
double myDouble = 2.718281828459045;
decimal myDecimal = 123.456m;

// Boolean Type
bool isTrue = true;
bool isFalse = false;

// Character Type
char myChar = 'A';

Reference Type in C#.

string myString = "Hello, World!";

object myObject = 42;

List of Data Types in C#.