在C＃中将对象从一个类调用到另一个类

Question

我知道这个问题已被问及我已经阅读了其他实例，但是，我从答案中无法理解。我正在尝试创建一个体脂百分比计算器，我需要将BMI从一个类调用到另一个类，我不知道如何。

namespace ParkerProgramming3
{
    public class BMICalc
    {
        static void Main(string[] args)
        {
            BMICalc calObj = new BMICalc();
            string strName = calObj.GetName();
            double dWeight = calObj.GetWeight();
            double dHeight = calObj.GetHeight();
            double BMI = calObj.GetCalc(dWeight, dHeight);


            //Console.Read();

        }
        public string GetName()
        {
            Console.WriteLine("Welcome to the BFP Calculator!");
            Console.WriteLine("What is your name?");
            string strName = Console.ReadLine();
            Console.WriteLine("Hello " + strName);
            Console.WriteLine("First, we need to calculate your BMI");
            return strName;
        }
        public double GetWeight()
        {
            Console.WriteLine("What is your weight (in pounds)?");
            string sWeight = Console.ReadLine();
            double dWeight = Convert.ToDouble(sWeight);
            return dWeight;
        }
        public double GetHeight()
        {
            Console.WriteLine("What is your height (in inches)?");
            string sHeight = Console.ReadLine();
            double dHeight = Convert.ToDouble(sHeight);
            return dHeight;
        }
        public double GetCalc(double GetWeight, double GetHeight)
        {
            double BMI = 703 * GetWeight / (GetHeight * GetHeight);
            return BMI;
        }

    }

}
public class BFPCalc
{
    public void BMICalc()
    {

    }
}