2015122101.cs

using System;
					
public class Program
{
	public static void Main()
	{
		var c = new C();
		c.FooCall(123);
		c.FooCall(456);
	}
}

public class C
{
	public void FooCall(int i)
	{
		this.Foo(i);
	}
	
	private void Foo(int i)
	{
		var s = "test1";
		this.Bar(i, s);
		
		// do something...
		
		s = "test2";
		this.Bar(i, s);
		
		// do something
		
		s = "test3";
		this.Bar(i, s);
		
		// etc...
	}

	private void Bar(int i, string s)
	{
		Console.WriteLine($"i = {i}, s = {s}");
	}
}