C#(Winfrom)自定义控件--组合控件方式

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

namespace MyControls
{
    public partial class PopControls : UserControl
    {
        
        public static string s;
        public PopControls()
        {
            InitializeComponent();
        }
        //定义自定义的属性
        [Browsable(true)]
        [Description("点击按钮，窗体的宽度，单位时像素"),Category("自定义属性"),DefaultValue(0)]
        public int PopWidth { get; set; }
        [Browsable(true)]
        [Description("点击按钮，窗体的高，单位时像素"), Category("自定义属性"), DefaultValue(0)]
        public int PopHeight { get; set; }
        [Browsable(true)]
        [Description("窗体的Text属性"), Category("自定义属性"), DefaultValue(0)]
        public string PopText { get; set; }
        private void btnok_Click(object sender, EventArgs e)
        {
            FrmPop frm = new FrmPop(PopWidth,PopHeight,PopText);
            frm.ShowDialog();

            txtnode.Text = s;
        }
    }
}

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

namespace MyControls
{
    public partial class FrmPop : Form
    {
        public FrmPop(int PopWidth,int PopHeight,string PopText)
        {
            InitializeComponent();
            this.ClientSize = new System.Drawing.Size(PopWidth, PopHeight);
            this.Text = PopText;
        }

        private void FrmPop_Load(object sender, EventArgs e)
        {
            for (int i = 0; i < 50; i++)
            {
                //随机数
                string s = Guid.NewGuid().ToString("N");
                listBoxGuid.Items.Add(s);
            }
            
        }

        private void listBoxGuid_DoubleClick(object sender, EventArgs e)
        {
            PopControls.s = listBoxGuid.SelectedItem.ToString();

            this.Close();
        }
    }
}