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   源码介绍

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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 jdt
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnTest1_Click(object sender, EventArgs e)
        {
            if (textBox2.Text == "")
            {
                return;

            }
            else {
                progressBar1.Value = 0;
                progressBar1.Minimum = 0;
                progressBar1.Maximum = Convert.ToInt32(textBox2.Text);
                output("进度条开始");
                timer1.Enabled = true;
            }
        }
        public void output(string log)
        { 
            if(textBox3.GetLineFromCharIndex(textBox3.Text.Length) < 100)
            {
                textBox3.Text = "";
                textBox3.AppendText(DateTime.Now.ToString("HH:mm:ss") log "\r\n");
                Console.Write(textBox3.Text);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (timer1.Enabled == true)
            {
                output("进度条暂停运行");
                button3.Text = "继续";
                timer1.Enabled = false;
            }
            else {
                output("进度条继续运行");
                button3.Text = "暂停";
                timer1.Enabled = true;
            
            }
            

        }
        

        private void button2_Click(object sender, EventArgs e)
        {
            output("进度条停止");
            timer1.Enabled = false;
            progressBar1.Value = 0;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (progressBar1.Value < progressBar1.Maximum)
            {
                progressBar1.Value  ;
                output("进度运行中（"   progressBar1.Value.ToString()   "/"   progressBar1.Maximum   ")...");
            }
            else {
                output("进度已完成");
                timer1.Enabled = false;
            }
        }

    }
}