C# -Type Conversion

Type Conversion means to Convert one data type to another. Generally type conversion is done in two form

1. Implicit Type Conversion : In This type of conversion the conversion is done automatically by the compiler, from smaller data type to larger data type or from derived classes to base class
2. Explicit Type Conversion: In This type of conversion the conversion is done automatically by the compiler, from smaller data type to larger data type or from derived classes to base class

Implicit Type Conversion Example:

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int i_num; i_num = 78; double d_num; d_num = i_num; // Implicit Conversion

Explicit Type Conversion Example :

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int i_num; double d_num; d_num = 78.45; i_num = (int)d_num; //Explicity Type Conversion

C# provide three difference ways for data type conversion

1. Type Cast Operator () 
2. Convert Class
3. Paring

Type Cast operation we have used in the above example. The second is Convert Class  which has different methods.

Method	Description
ToBoolean	Converts a type to a Boolean value, where possible.
ToByte	Converts a type to a byte.
ToChar	Converts a type to a single Unicode character, where possible.
ToDecimal	Converts a floating point or integer type to a decimal type.
ToDouble	Converts a type to a double type.
ToInt32	Converts a type to a 32-bit integer.
ToInt16	Converts a type to a 16-bit integer.
ToInt64	Converts a type to a 64-bit integer.
ToString	Converts a type to a string.

The following example converts various value types to string type −

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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(); } } }

When the above code is compiled and executed, it produces the following result

75
53.005
2345.7652
True