What is the difference between implicit and explicit type conversion in C#?

The following is the difference between implicit and explicit type conversion −

Implicit Type Conversion

These conversions are performed by C# in a type-safe manner.

To understand the concept, let us implicitly convert int to long.

int val1 = 11000;
int val2 = 35600;
long sum;

sum = val1 + val2;

Above, we have two integer variable and when we sum it in a long variable, it won’t show an error. Since the compiler does the implicit conversion on its own.

Let us print the values now.

Example

using System;
using System.IO;

namespace Demo {
   class Program {
      static void Main(string[] args) {
         int val1 =34567;
         int val2 =56743;
         long sum;

         sum = val1 + val2;

         Console.WriteLine("Sum= " + sum);

         Console.ReadLine();
      }
   }
}

Explicit Type Conversion

These conversions are done explicitly by users using the pre-defined functions.

Let us see an example to typecast double to int −

Example

using System;

namespace Program {
   class Demo {
      static void Main(string[] args) {
         double d = 1234.89;
         int i;

         // cast double to int.
         i = (int)d;
         Console.WriteLine(i);
         Console.ReadKey();
      }
   }
}