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C# `Type Conversion`

Type conversion fundamentally involves type casting, or the process of converting data from one type to another. In C#, type casting comes in two forms:

Implicit Type Conversion - These conversions are C#'s default safe conversions that do not result in data loss. For example, converting from a smaller integer type to a larger integer type, or from a derived class to a base class.
Explicit Type Conversion - Explicit type conversion, also known as type casting, requires the use of a cast operator and can lead to data loss.

The following example demonstrates an explicit type conversion:

Example

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:

C# Type Conversion Methods

C# provides the following built-in type conversion methods:

No.	Method & Description
1	ToBoolean <br>Converts a type to a Boolean value, if possible.
2	ToByte <br>Converts a type to a byte type.
3	ToChar <br>Converts a type to a single Unicode character, if possible.
4	ToDateTime <br>Converts a type (integer or string) to a date-time structure.
5	ToDecimal <br>Converts a floating point or integer type to a decimal type.
6	ToDouble <br>Converts a type to a double type.
7	ToInt16 <br>Converts a type to a 16-bit integer type.
8	ToInt32 <br>Converts a type to a 32-bit integer type.
9	ToInt64 <br>Converts a type to a 64-bit integer type.
10	ToSByte <br>Converts a type to a signed byte type.
11	ToSingle <br>Converts a type to a small floating point number.
12	ToString <br>Converts a type to a string.
13	ToType <br>Converts a type to a specified type.
14	ToUInt16 <br>Converts a type to a 16-bit unsigned integer type.
15	ToUInt32 <br>Converts a type to a 32-bit unsigned integer type.
16	ToUInt64 <br>Converts a type to a 64-bit unsigned integer type.

The following example converts various types to string types:

Example

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 produces the following result:

75
53.005
2345.7652
True

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