C#, static method, using constructor call

[rajanipro]

Please consider the following two cases and explain to me the difference in output:

Consider Case 1:

using System;

class MyClass
{
static int s;
static int i;

public MyClass(int a, int b)
{
s = a;
i = b;
}

public static int myMethod()
{
return s * i;
}

}

class MainClass
{
static void Main()
{
MyClass mc1 = new MyClass(1, 1);
MyClass mc2 = new MyClass(2, 2);
Console.WriteLine("The result of mc1 = {0}", MyClass.myMethod());
Console.WriteLine("The result of mc2 = {0}", MyClass.myMethod());
}
}

Case 2:

using System;

class MyClass
{
static int s;
static int i;

public MyClass(int a, int b)
{
s = a;
i = b;
}

public static int myMethod()
{
return s * i;
}

}

[vanc]

The point is static variable is unique, and it doesn't need to be instantiated. So whenever you assign a value to a static variable, it will retain this value until you assign new value to it.
In your case, you created two objects but the static variables will be overwritten by the last assignment. Thus, it will return 2*2 not the first value.

cheers.