C# Call By Reference

by Online Tutorials Library July 14, 2022

C# Call By Reference

C# provides a ref keyword to pass argument as reference-type. It passes reference of arguments to the function rather than copy of original value. The changes in passed values are permanent and modify the original variable value.

C# Call By Reference Example

 using System; namespace CallByReference {     class Program     {         // User defined function         public void Show(ref int val)         {              val *= val; // Manipulating value             Console.WriteLine(“Value inside the show function “+val);             // No return statement         }         // Main function, execution entry point of the program         static void Main(string[] args)         {             int val = 50;             Program program = new Program(); // Creating Object             Console.WriteLine(“Value before calling the function “+val);             program.Show(ref val); // Calling Function by passing reference                       Console.WriteLine(“Value after calling the function ” + val);         }     } } 

Output:

Value before calling the function 50 Value inside the show function 2500 Value after calling the function 2500

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