C# Winform選項卡集成窗體

知識要點：利用反射動態的加載窗體到對應的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 = { 0, 0, 0 };//用來記錄窗體是否打開過

        private void MainForm_Load(object sender, EventArgs e)
        {
            //默認加載CNC窗體
            string formClass = "MDITest.CNC";
            GenerateForm(formClass, tabControl1);
        }

        public void GenerateForm(string form,object sender)
        {
            //反射生成窗體
            Form fm = (Form)Assembly.GetExecutingAssembly().CreateInstance(form);
            //設置窗體沒有邊框，加入到選項卡中
            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] = 1; 
        }

        private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //只生成一次
            if(s[tabControl1.SelectedIndex]==0)
            {
                btn_Click(sender,e);
            }
        }
        
         /// <summary>  
        /// 通用按鈕點擊選項卡 在選項卡上顯示對應的窗體  
        /// </summary>  
        private void btn_Click(object sender,EventArgs e)
        {
            string formClass=((TabControl)sender).SelectedTab.Tag.ToString();
            GenerateForm(formClass, sender);
        }



    }
}