参考 C# Winform中窗体的美化—— 用IrisSkin轻松实现换肤功能

使用简单的窗体传值在主页面添加一个id即可全部页面进行传值大概就是这样的代码：

public static int id = 0;

private void button1_Click(object sender, EventArgs e)
        {

            if (button1.Text == "button1")
            {
                id = 0;
                button1.Text = "button2";
            }
            else if (button1.Text == "button2")
            {
                id = 1;
                button1.Text = "button3";
            }
            else if (button1.Text == "button3")
            {
                id = 2;
                button1.Text = "button1";
            }

            if (id == 0)
            {
                this.BackgroundImage = Image.FromFile(@"C:\Users\asus\Desktop\timg.jpg");
            }
            else if (id == 1)
            {
                this.BackgroundImage = Image.FromFile(@"C:\Users\asus\Desktop\timg1.jpg");
            }
            else if (id == 2)
            {
                this.BackgroundImage = Image.FromFile(@"C:\Users\asus\Desktop\tim.jpg");
            }
           
        }

派生一个Form类；

重写Background Set方法：通过进程窗口管理直接管理所有窗口即可。

多个窗口的背景图片用一个资源不就好了，一改都改

用一个资源不是很好实现吗