显示进度并在下面的方框中显示具体到哪一步。

界面

控件：ProgressBar、textBox、checkBox、button
名称：界面Form_progressbar、进度条progressBar、文本框textBox1、复选框checkBox1

进度条界面代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace SiteWindowGIS
{
    public partial class Form_progressbar : Form
    {
        public Form_progressbar()
        {
            InitializeComponent();
        }

        public void increaceProgressNew(int n, string textProcess)
        {      
            progressBar.Value = Convert.ToInt32(n);//增加进度条进度
            textBox1.AppendText("\r\n" + textProcess);//添加文字
            textBox1.ScrollToCaret();
            progressBar.CreateGraphics().DrawString(progressBar.Value.ToString() + "%", new Font("宋体", (float)12, FontStyle.Regular), Brushes.Black, new PointF(progressBar.Width / 2, progressBar.Height / 3));
            if (checkBox1.Checked && progressBar.Value == 100)
            {
                this.Close();
            }
        }

        private void Form_progressbar_VisibleChanged(object sender, EventArgs e)
        {

        }

        private void Button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void CheckBox1_CheckedChanged(object sender, EventArgs e)
        {

        }
    }
}

主界面代码

楼主设计了一个界面，从主界面点击进度条，弹出进度条，测试这个是否正确。
主界面进度条部分代码

        //弹出进度条窗口,初始化进度条并显示
        static Form_progressbar fbnew = new Form_progressbar();
        public delegate void updateProgressBarnew(int n, string text);//委托
        private void foonew(updateProgressBarnew feedBack)
        {
            string str="";
            for (int i=1;i<100;i++)
            {
                for (int j = 0; j < 100000000; j++) { double s = Math.Sqrt(j*1.0); }
                str = "第" + i + "循环";
                feedBack(i, str);
            }   
        }

        private delegate void calculateMethodnew();
        private void calculatenew()
        {
            updateProgressBarnew ss = new updateProgressBarnew(fbnew.increaceProgressNew);
            foonew(ss);
        }

        private void asyncnew()
        {
            Thread.Sleep(2000);
            this.BeginInvoke(new calculateMethodnew(calculatenew));
        }

        private void 进度条ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            fbnew.progressBar.Value = 0;
            fbnew.progressBar.Maximum = 100;
            fbnew.progressBar.Minimum = 0;
            fbnew.textBox1.Text = "";
            ThreadStart threadStart = new ThreadStart(asyncnew);
            Thread thread = new Thread(threadStart);
            thread.Start();
            fbnew.ShowDialog();
        }