内置类型（C# 参考）Built-in types (C# reference)
下表列出了 C# 内置值类型：The following table lists the C# built-in value types:
| C# 类型关键字C# type keyword | .NET 类型.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 |
long |
System.Int64 |
ulong |
System.UInt64 |
short |
System.Int16 |
ushort |
System.UInt16 |
下表列出了 C# 内置引用类型：The following table lists the C# built-in reference types:
| C# 类型关键字C# type keyword | .NET 类型.NET type |
|---|---|
object |
System.Object |
string |
System.String |
在上表中，左侧列中的每个 C# 类型关键字都是相应 .NET 类型的别名。In the preceding tables, each C# type keyword from the left column is an alias for the corresponding .NET type. 它们是可互换的。They are interchangeable. 例如，以下声明声明了相同类型的变量：For example, the following declarations declare variables of the same type:
int a = 123;
System.Int32 b = 123;
void 关键字表示缺少类型。The void keyword represents the absence of a type. 将其用作不返回值的方法的返回类型。You use it as the return type of a method that doesn't return a value.