c# while loop ... wait till code inside is executed before next loop

It's printing 100. I'm quite sure that this is the correct result of 10*10.

What do you expect?

You cearly didnt read my question.

i have the following probem. I have a loop statement which calls a method but
 loop is executing before code in side is finished.

This is clearly not true. Please describe what you expect.

Since i can not post my whole project here this example should do it.

In my case what happens is While loop executes and keeps on running
while code that "calculates" doesnt get executed.

Now i was wondering is there a way to stop loop execution with function which is
inside the loop is executed?

Your calculate method gets executed, otherwise you wouldn't have any output. Your loop has no terminating criteria, thus it runs for forever and prints 100.

So again: What do you expect? Why do you think, your method gets not executed?

btw, the complete code I've used already before my first answer:

namespace Console_CS
{
    using System;

    class Program
    {
        static void Main(string[] args)
        {
            Print();
            Console.WriteLine("Done.");
            Console.ReadLine();
        }

        public static void Print()
        {
            int i = 10, j = 10;
            while (1 > 0) { calculate(i, j); }
        }

        public static int calculate(int i, int j)
        {
            int b = i * j;
            Console.WriteLine("Result: " + b);
            return b;
        }
    }
}

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and its output:

And to make it just clear: I READ YOUR MESSAGE. MAYBE I DIDN'T UNDERSTAND IT. BUT THAT'S WHY I ASKED FOR CLARIFICATION!!!!!!!!!!!!

I agree with ste5an, whatever your problem is in the real case you have NOT reproduced it in your example code.

>>In my case what happens is While loop executes and keeps on running
while code that "calculates" doesnt get executed.

If you put a breakpoint inside the function (select a line with the cursor, press the F9 key and you should see a red dot appear to the left) and run the code.  When that line of code is reached your program will stop and you will be in the editor at that line where you can perform debugging actions.