C# Winform选项卡集成窗体

知识要点：利用反射动态的加载窗体到对应的TabPage的。

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

namespace MDITest
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        public int[] s = { , ,  };//用来记录窗体是否打开过

        private void MainForm_Load(object sender, EventArgs e)
        {
            //默认加载CNC窗体
            string formClass = "MDITest.CNC";
            GenerateForm(formClass, tabControl1);
        }

        public void GenerateForm(string form,object sender)
        {
            //反射生成窗体
            Form fm = (Form)Assembly.GetExecutingAssembly().CreateInstance(form);
            //设置窗体没有边框，加入到选项卡中
            fm.FormBorderStyle = FormBorderStyle.None;
            fm.TopLevel = false;
            fm.Parent = ((TabControl)sender).SelectedTab;
            fm.ControlBox = false;
            fm.Dock = DockStyle.Fill;
            fm.Show();
            s[((TabControl)sender).SelectedIndex] = ;
        }

        private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //只生成一次
            if(s[tabControl1.SelectedIndex]==)
            {
                btn_Click(sender,e);
            }
        }

         /// <summary>
        /// 通用按钮点击选项卡 在选项卡上显示对应的窗体
        /// </summary>
        private void btn_Click(object sender,EventArgs e)
        {
            string formClass=((TabControl)sender).SelectedTab.Tag.ToString();
            GenerateForm(formClass, sender);
        }

    }
}