📅  最后修改于: 2020-12-28 05:00:27             🧑  作者: Mango
类型转换将一种类型的数据转换为另一种类型。也称为类型转换。在C#中,类型转换具有两种形式-
隐式类型转换-这些转换由C#以类型安全的方式执行。例如,是从较小的整数类型到较大的整数类型的转换,以及从派生类到基类的转换。
显式类型转换-这些转换由用户使用预定义的函数显式完成。显式转换需要强制转换运算符。
以下示例显示了显式类型转换-
using System;
namespace TypeConversionApplication {
class ExplicitConversion {
static void Main(string[] args) {
double d = 5673.74;
int i;
// cast double to int.
i = (int)d;
Console.WriteLine(i);
Console.ReadKey();
}
}
}
编译并执行上述代码后,将产生以下结果-
5673
C#提供以下内置类型转换方法-
Sr.No. | Methods & Description |
---|---|
1 |
ToBoolean Converts a type to a Boolean value, where possible. |
2 |
ToByte Converts a type to a byte. |
3 |
ToChar Converts a type to a single Unicode character, where possible. |
4 |
ToDateTime Converts a type (integer or string type) to date-time structures. |
5 |
ToDecimal Converts a floating point or integer type to a decimal type. |
6 |
ToDouble Converts a type to a double type. |
7 |
ToInt16 Converts a type to a 16-bit integer. |
8 |
ToInt32 Converts a type to a 32-bit integer. |
9 |
ToInt64 Converts a type to a 64-bit integer. |
10 |
ToSbyte Converts a type to a signed byte type. |
11 |
ToSingle Converts a type to a small floating point number. |
12 |
ToString Converts a type to a string. |
13 |
ToType Converts a type to a specified type. |
14 |
ToUInt16 Converts a type to an unsigned int type. |
15 |
ToUInt32 Converts a type to an unsigned long type. |
16 |
ToUInt64 Converts a type to an unsigned big integer. |
以下示例将各种值类型转换为字符串类型-
using System;
namespace TypeConversionApplication {
class StringConversion {
static void Main(string[] args) {
int i = 75;
float f = 53.005f;
double d = 2345.7652;
bool b = true;
Console.WriteLine(i.ToString());
Console.WriteLine(f.ToString());
Console.WriteLine(d.ToString());
Console.WriteLine(b.ToString());
Console.ReadKey();
}
}
}
编译并执行上述代码后,将产生以下结果-
75
53.005
2345.7652
True