winform窗体间利用委托传值(一)

namespace 点击小图变成大图
{
    public delegate void ClickDelegateHander(string Url);
    public partial class Form1 : Form
    {
        public event ClickDelegateHander ClickEvent;
        
        public Form1()
        {
            InitializeComponent();
        }
        private void pictureBox1_Click(object sender, EventArgs e)
        {
            if (ClickEvent != null)
            {
                ClickEvent(pictureBox1.ImageLocation);
            }
        }
    }
}

namespace 点击小图变成大图
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
            Form1 form1 = new Form1();
            form1.ClickEvent += new ClickDelegateHander(getUrl);
            form1.Show();
        }

        public void getUrl(string Url)
        {
            this.pictureBox1.ImageLocation = Url;
        }
    }
}