C#组合背部颜色在if或starement上更改

using System;
using System.Drawing;
using System.Windows.Forms;

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

        private void button1_Click(object sender, EventArgs e)
        {
            if (condition)
            {
                this.BackColor = Color.Red;
            }
            else
            {
                this.BackColor = Color.Blue;
            }
        }
    }
}

using System;
using System.Drawing;
using System.Windows.Forms;

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

        private void button1_Click(object sender, EventArgs e)
        {
            int caseNumber = 1; // 假设caseNumber是根据某种逻辑计算得出的值

            switch (caseNumber)
            {
                case 1:
                    this.BackColor = Color.Red;
                    break;
                case 2:
                    this.BackColor = Color.Blue;
                    break;
                default:
                    this.BackColor = Color.White;
                    break;
            }
        }
    }
}