• 学习笔记progressbar简单示例


    进度条简单示例,其实不算是自己的东西了,就是留个学习记录吧

    using System.Windows.Forms;

    //第一步 添加引用

    using System.Threading;

    using System.IO;

    namespace progressbar

    {

      public partial class Form1:From

      {

        public Form1()
             {
                 InitializeComponent();
             }

             //第二步 定义委托更新进度条的值
             private delegate void SetPos(int ipos);
         //第三步 进度条值更新函数
         private void SetTextMessage(int ipos)
              {
                  if (this.InvokeRequired)
                  {
                       SetPos setPos = new SetPos(SetTextMessage);

             //主线程外修改主线程时使用this.Invoke
                       this.Invoke(setPos, new object[] { ipos });
                  }
                  else
                  {
                       this.label1.Text = ipos.ToString() + @"/100";
                       this.pgb.Value = Convert.ToInt32(ipos);
                  }
             }

             //进度条的使用及开发函数
             private void button1_Click(object sender, EventArgs e)
             {
                  Thread fThread = new Thread(new ThreadStart(SleepT));
                  //开辟一个新线程
                  fThread.Start();
             }

        //提示信息
             public delegate void showMsg(string msg);
             public void msgBox(string msg)
             {
                  if (this.InvokeRequired)
                  {
                      showMsg show_msg = new showMsg(msgBox);
                      this.Invoke(show_msg, new object[] { msg });
                  }
                  else
                  {
                      MessageBox.Show(msg);
                  }
             }

             private void SleepT()
             {
                  for (int i = 0; i < 200; i++)
                  {
                      //单纯的延时
                      Thread.Sleep(100);
                      SetTextMessage(100 * i / 200);
                  }
                  SetTextMessage(100);
                  msgBox("success");
             }

      }

    }

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  • 原文地址:https://www.cnblogs.com/maomaokuaile/p/2835797.html
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