Type conversion is converting one type of data to another type. It is also known as Type Casting. In C#, type casting has two forms:
Implicit type conversion - These conversions are performed by C# in a type-safe manner. For example, are conversions from smaller to larger integral types and conversions from derived classes to base classes.
Explicit type conversion - These conversions are done explicitly by users using the pre-defined functions. Explicit conversions require a cast operator.
The following example shows an explicit type conversion:
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();
}
}
}
When the above code is compiled and executed, it produces the following result:
5673
C# Type Conversion Methods
C# provides the following built-in type conversion methods:
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.
|