进度条封装 转

 public class MyProgress
        {
            private int MaxNum;
            Form progressForm = null;
            ProgressBar progressBar1 = null;
            bool Stop = false;
            Label label1;
            public bool ProgressStep(int step)
            {
                if (Stop)
                {

 

                    this.Dispose();

 

                    return true;

 

                }

 

                if (progressBar1.Value > progressBar1.Maximum)
                {

 

                    this.Dispose();

 

                    return true;

 

                }

 

                progressBar1.Value += step;

 

                label1.Text = "目前完成:" + (progressBar1.Value * 100 / progressBar1.Maximum) + "%";

 

                Application.DoEvents();
                return false;
            }

 

            private void btn_Click(object sender, EventArgs e)
            {

 

                if (MessageBox.Show("确定终止吗", "终止", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) != DialogResult.Yes)

 

                    Stop = false;

 

                else

 

                    Stop = true;

 

            }

 

            public MyProgress(int Max, String Caption, bool IsCancel)//最大值和标题
            {
                progressForm = new Form();
                progressForm.MinimizeBox = false;
                progressForm.MaximizeBox = false;
                progressForm.StartPosition = FormStartPosition.CenterScreen;
                progressForm.Width = 326 + 19;
                progressForm.Height = 96 + 19 + 20;
                progressForm.Text = Caption;
                progressForm.TopMost = true;//设置窗口在上边
                label1 = new Label();
                label1.Left = 9; label1.Top = 15;
                label1.Parent = progressForm;
                progressBar1 = new ProgressBar();
                progressBar1.Maximum = Max;
                MaxNum = Max;
                progressBar1.Left = 9;
                progressBar1.Top = 25 + 15;
                progressBar1.Width = 310;
                progressBar1.Parent = progressForm;
                progressBar1.Value = 0;
                if (IsCancel)
                {
                    Button btnCancel = new Button();
                    btnCancel.Text = "取消";
                    btnCancel.Left = 240;
                    btnCancel.Top = 54 + 20;
                    btnCancel.Parent = progressForm;
                    btnCancel.Click += new System.EventHandler(this.btn_Click);
                }
                progressForm.Show();
            }

 

            public void Dispose()
            {
                if (progressForm != null)
                {
                    progressBar1.Dispose();
                    progressForm.Dispose();
                }
            }
        }

 


       // 调用测试 进度条窗口
        private void dowork()
        {
            MyProgress myProgress = new MyProgress(100, "进度条", true);
            try
            {
                for (int i = 0; i < 100; i++)
                {
                    if (myProgress.ProgressStep(1)) return;
                    Application.DoEvents();//让系统在百忙中抽空刷新
                    Thread.Sleep(100);
                }
            }
            finally
            {
                myProgress.Dispose();
            }
        }

 

   

 

         private void button2_Click(object sender, EventArgs e)
        {
            this.dowork();
        }