C# type conversion
Type conversion is fundamentally type casting, or converting data from one type to another. In C#, type casting comes in two forms:
#Implicit type conversions - These conversions are C#'s default conversions that are performed in a safe manner. For example, converting from a small integer type to a large integer type, and from a derived class to a base class.
Explicit Type Conversions - These conversions are done explicitly by the user using predefined functions. Explicit conversion requires a cast operator.
The following example shows an explicit type conversion:
namespace TypeConversionApplication
{
class ExplicitConversion
{
static void Main(string[] args)
{
double d = 5673.74;
int i;
// 强制转换 double 为 int
i = (int)d;
Console.WriteLine(i);
Console.ReadKey();
}
}
}When the above code is compiled and executed, it produces the following results:
5673
C# Type conversion method
C# provides the following built-in type conversion methods:
| method & Description | |
|---|---|
| ToBooleanConvert the type to Boolean if possible. | |
| ToByteConvert the type to byte type. | |
| ToCharConvert the type to a single Unicode character type if possible. | |
| ToDateTimeConvert the type (integer or string type) to a date-time structure. | |
| ToDecimalConvert floating point or integer type to decimal type. | |
| ToDouble Convert the type to double precision floating point. | |
| ToInt16Convert the type to a 16-bit integer type. | |
| ToInt32Convert the type to a 32-bit integer type. | |
| ToInt64Convert the type to a 64-bit integer type. | |
| ToSbyteConvert the type to a signed byte type. | |
| ToSingle Convert the type to a small floating point number type. | |
| ToString Convert the type to string type. | |
| ToTypeConvert the type to the specified type. | |
| ToUInt16Convert the type to a 16-bit unsigned integer type. | |
| ToUInt32Convert the type to a 32-bit unsigned integer type. | |
| ToUInt64Convert the type to a 64-bit unsigned integer type. |
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();
}
}
}When the above code is compiled and executed, it will produce the following Result: 75 53.005 2345.7652 True
