C# winfrom设置循环暂停和继续 原文转自:http://blog.csdn.net/qwldcl/article/details/3970784

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 WindowsFormsApplication1
{
    public partial class Form12 : Form
    {

        public enum RunState
        {
            running,
            pause,
            stop
        }

        private int i = 0;

        RunState state = RunState.stop;  

        public Form12()
        {
            InitializeComponent();
        }

        private void RunProc(object sender, EventArgs e)//执行的部分   
        {
            timer1.Enabled = false;
            if (state == RunState.running)
            {
                label1.Refresh();
                label1.Text = "";
                label1.Text = i.ToString();
                label1.Refresh();
                i++;
                timer1.Enabled = true;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (this.button1.Text == "开始")
            {
                this.button1.Enabled = false;
                this.button2.Enabled = true;
                this.button3.Enabled = true;

                timer1.Tick += new EventHandler(RunProc);
                timer1.Enabled = true;

                this.state = RunState.running;
            }  
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (this.button2.Text == "暂停")
            {
                timer1.Enabled = false;
                state = RunState.pause;

                this.button2.Text = "继续";
            }
            else
            {
                timer1.Enabled = true;
                this.state = RunState.running;
                this.button2.Text = "暂停";
                this.button2.Enabled = true;
                //timer1.Start();   
            }  

        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.timer1.Enabled = false;
            this.i = 0;
            this.label1.Text = "0";
            this.state = RunState.stop;

            this.button1.Text = "开始";
            this.button1.Enabled = true;
            this.button2.Text = "暂停";
            this.button2.Enabled = false;
            this.button3.Enabled = false;  

        }

        private void Form12_Load(object sender, EventArgs e)
        {
            this.label1.Text = "0";
            this.button2.Enabled = false;
            this.button3.Enabled = false;
        }
    }
}