Type conversion is basically type casting or
converting one type of data to another type.
In C#, type casting has two forms:
1. Implicit type conversion - these conversions are performed by C# in a type-safe manner.
Examples are conversions from
smaller to larger integral types and
conversions from derived classes to base
classes.
2. Explicit type conversion - these conversionsare done explicitly by users using the pre-defined functions. Explicit conversions require a cast operator.
The following example shows an explicit type
conversion:
namespace TypeConversionApplication
{
class ExplicitConversion
{
static void Main(string[] ar
{
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:
S.N 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.
The following example converts various value types to string type:
namespace TypeConversionApplication
{
class StringConversion
{
static void Main(string[] ar
{
int i = 75;
float f = 53.005f ;
double d = 2345.7652 ;
bool b = true;
Console . WriteLine( i . ToSt
Console . WriteLine( f . ToSt
Console . WriteLine( d . ToSt
Console . WriteLine( b . ToSt
Console . ReadKey();
}
}
}
When the above code is compiled and executed, it produces the following result:
75
53.005
2345.7652
True
