by value by reference c# code example

Example 1: c# pass arg by reference

void Method(ref int refArgument)
{
  // Second param will add to int refArgument
    refArgument = refArgument + 44;
}

int number = 1;
Method(ref number);
Console.WriteLine(number);
// Output: 45

Example 2: c# ref

void Method(ref int refArgument)
{
    refArgument = refArgument + 44;
}

int number = 1;
Method(ref number);
Console.WriteLine(number);
// Output: 45

Example 3: by value by reference c#

static void squareRef(ref int refParameter)
    {
        refParameter *= refParameter;
    }

Example 4: cannot initialize a by-value variable with a reference

// must declare variable as ref as well!
ref int x = ref SomeClass.variable;