方法重载示例

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace 框架
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "方法重载示例";
            RadioC.Select();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Round r = new Round();
            if (RadioC.Checked)
            {
                if (TextR.Text == "")
                {
                    MessageBox.Show("必须输入半径");
                    return;
                }
                float R = float.Parse(TextR.Text);
                LabelResult.Text = Convert.ToString(r.Account(R));
            }
            else if (RadioA.Checked)
            {
                if (TextR.Text == "")
                {
                    MessageBox.Show("必须输入半径");
                    return;
                }
                double R = double.Parse(TextR.Text);
                LabelResult.Text = Convert.ToString(r.Account(R));
            }
            else if (RadioV.Checked)
            {
                if (TextR.Text == "" || TextH.Text == "")
                {
                    MessageBox.Show("必须输入半径和高","出错");
                    return;
                }
                double R = double.Parse(TextR.Text);
                double H = double.Parse(TextH.Text);
                LabelResult.Text = Convert.ToString(r.Account(R, H));
            }
        }
    }
    class Round
    {
        public float Account(float radius)
        {
            float c = (float)(2 * Math.PI * radius);
            return c;
        }
        public double Account(double radius)
        {
            double a = Math.PI * radius * radius;
            return a;
        }
        public double Account(double radius, double hight)
        {
            double v = Math.PI * radius * radius * hight;
            return v;
        }
    }
}