PrograssBar控件

常用属性：Value，Step，Style，MarqueeAnimationSpeed，Maximum，Minimum

方法：PerformStep（）Increment（）

知识点1：

Style控制PrograssBar的样式，选项为：Block，Continuous，Marquee

当Style=Marquee时，MarqueeAnimationSpeed属性起作用，用于控制动画的速度；

Maximum，Minimum控制PrograssBar的最大值和最小值

Step控制当前值的增量；

知识点2：

使用timer实现一个PrograssBar效果，如下：

using System;
using System.Windows.Forms;

namespace ControlsTest
{
    public partial class FormPrograssBar : Form
    {
        public FormPrograssBar()
        {
            InitializeComponent();
            this.Load += FormPrograssBar_Load;
        }

        System.Timers.Timer t;
        private void FormPrograssBar_Load(object sender, EventArgs e)
        {
            progressBar1.Maximum = 100;
            progressBar1.Minimum = 0;
            progressBar1.Value = 0;
            progressBar1.Step = 10;
            progressBar1.Style = System.Windows.Forms.ProgressBarStyle.Blocks;

            t = new System.Timers.Timer();
            t.Interval = 500;
            t.AutoReset = true;
            t.Elapsed += T_Elapsed;

        }

        private void T_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            if (progressBar1.Value < 100)
            {
                this.Invoke(new Action(() =>
                {
                    //progressBar1.Value += progressBar1.Step;
                    progressBar1.PerformStep();
                    label1.Text = (progressBar1.Value * 100 / progressBar1.Maximum).ToString() + "%";
                }));
            }
            else
            {
                this.Invoke(new Action(() =>
                {
                    label1.Text = "已完成";
                }));
                t.Stop();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            t.Start();
        }
    }
}