C# Type casting

In C#, like many other programming languages Type casting is when you assign a value of one data type to another type.

In C# type casting is classified in 2 types:

Implicit Casting (automatically) - converting a smaller type to a larger type size:

char -> int
int -> long
long -> float
float -> double

Explicit Casting (manually) - converting a larger type to a smaller size type:

double -> float
float -> long
long -> int
int -> char

C# Implicit Casting (automatically) Example

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      int numberInt = 9;
      double numberDouble = numberInt;  // Automatic casting: int to double

      Console.WriteLine(numberInt);
      Console.WriteLine(numberDouble);
    }
  }
}

Output

9
9

C# Explicit Casting (manually) Example

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      double doubleNumber = 19.99;
      int myInt = (int) doubleNumber;  // Manual casting: double to int

      Console.WriteLine(doubleNumber);
      Console.WriteLine(myInt);
    }
  }
}

Output

19.99
19

Conclusion

In this page (written and validated by A. Gawali) you learned about C# Type casting . What's Next? If you are interested in completing CS tutorial, your next topic will be learning about: CS Defining Constants.

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