Built-in types (C# reference)

Article
2025-03-12

The following table lists the C# built-in value types:

C# type keyword	.NET type
`bool`	System.Boolean
`byte`	System.Byte
`sbyte`	System.SByte
`char`	System.Char
`decimal`	System.Decimal
`double`	System.Double
`float`	System.Single
`int`	System.Int32
`uint`	System.UInt32
`nint`	System.IntPtr
`nuint`	System.UIntPtr
`long`	System.Int64
`ulong`	System.UInt64
`short`	System.Int16
`ushort`	System.UInt16

The following table lists the C# built-in reference types:

C# type keyword	.NET type
`object`	System.Object
`string`	System.String
`delegate`	System.Delegate