Value Type Parameter in C#

value-type-parameter
In this chapter you will learn:

  • What is Value type?
  • What is difference between value type and reference type?
  • How to pass value type parameter to a function?

As mentioned previous chapter, there are two types of parameter that can be passed in function. One is Value type parameter and another is reference type parameter. Before understanding both type of parameter in C#, you will have to understand Value type and Reference type.

There are two ways to allocating space in memory. One is value type and another is Reference type. When you create int, char or float type variable, it creates value type memory allocation whereas when you create object of class, it creates reference type memory allocation.

Value Type: A value type variable directly contains data in the memory.

Reference Type: A Reference type variable contains memory address of value.


Consider the following graph to make better sense of value type and reference type.

valuetype-parameter-flowchart

In the preceding example, the value type variable contains the value whereas a reference type variable contains the address of Result variable.

Value Type Parameter:

In value type parameter, the actual value gets passed to the function. Passing a value type variable as parameter means, you are passing the copy of the value.

Programming Example

Output

125
__

Summary

In this chapter you learned in details about value type parameter in C#. You also learned how to use value type parameter in c sharp programming. In next chapter you will learn about Reference Type Parameter in C#.



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