C# 不使用refresh()进行窗体动态变化

Question

描述一下我的问题：
我的winform窗体有52个picturebox，这些picturebox里的图片依次发生变化时（例如用一张图片替换当前图片），窗体不会立刻显示这一变化，而是在所有picturebox的图片都更替完毕后，显示最后的效果，而我想要的是，在每一次变化时picturebox就及时做出变化，我最先在每一步更替操作后加上refresh()刷新窗体，确实可以实现这一要求，但是问题来了，这个操作是刷新整个winform窗体，在大量图片更替时，refresh一直被执行，导致窗体卡住无法操作。请问还有哪些方法可以解决这些问题？

附上代码：

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



namespace poke_text
{

    public partial class Form1 : Form
    {
        PictureBox[] pb;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int Num = 0;
            Num = 53;
            pb = new PictureBox[Num];
            for (int i = 1; i < Num; i++)
            {
                pb[i] = new System.Windows.Forms.PictureBox();
                pb[i].BorderStyle = BorderStyle.FixedSingle;
                pb[i].Height = 100;
                pb[i].Width = 50;
                pb[i].Image = Image.FromFile(@"C:\Users\Administrator\source\repos\poke_text\poke_text\bin\Resources\" + i + ".JPG");
                pb[i].SizeMode = PictureBoxSizeMode.StretchImage;
                flowLayoutPanel1.Controls.Add(pb[i]);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            int a = 2;

            int count = 52;

            while (a < 53)
            {
                int[] b = new int[52];
                for (int i = 0; i < 52; i += 1)
                {
                    b[i] = 0;
                }
                for (a = 2; a < 53; a += 1)
                {
                    for (int temp = a; temp < 53; temp += 1)
                    {
                        if (temp % a == 0)
                        {
                            if (b[temp - 1] == 0)
                            {
                                pb[temp].Image = Image.FromFile(@"C:\Users\Administrator\source\repos\poke_text\poke_text\bin\Resources\back.JPG");
                                count--;
                                refresh();
                                //这里的刷新窗体
                                b[temp - 1] = 1;
                            }
                            else
                            {
                                pb[temp].Image = Image.FromFile(@"C:\Users\Administrator\source\repos\poke_text\poke_text\bin\Resources\" + temp + ".JPG");
                                count++;
                                b[temp - 1] = 0;
                            }
                        }
                    }
                }
                string s1 = count.ToString();
                string s2 = Convert.ToString(count);
                textBox1.Text = s2;
            }
        }
    }
}

Answer 1

导致窗体卡住无法操作

那就新开线程