| Built-In Types Table The following table shows the keywords for built-in C# types, which are aliases of predefined types in the System namespaces. | C# Type | .NET Framework 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 | | long | System.Int64 | | ulong | System.UInt64 | | object | System.Object | | short | System.Int16 | | ushort | System.UInt16 | | string | System.String |
The C# type keywords and their aliases are interchangeable. For example, you can declare an integer variable by using either of the following declarations: |