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Type Conversion in C#

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);
}
}
}


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

 

5673

C# Type Conversion Methods

C# provides the following are most important built-in type conversion methods −

  • 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.
  • ToString - Converts a type to a string.

The following example converts various value types to string type −

 

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

 

Try the following example in the editor below.

You are given a character called ch, print the ASCII value of the character.

Example Input:

ch = 'a'


Example Output:

97
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