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以下是代码中创建progressbar的实例

 int count = 0;

        private void button4_Click(object sender, EventArgs e)         {             Thread th = new Thread(() => {                 Form form = new Form();                 form.Name="myForm";                 form.Width = 200;                 form.Height = 20;                 form.ControlBox = false;                 //form.ShowInTaskbar = false;                 form.StartPosition = FormStartPosition.CenterScreen;                 ProgressBar pb = new ProgressBar();                 pb.Dock = DockStyle.Fill;                 pb.Maximum = 100;                 pb.Minimum = 0;                 pb.Value = count;                 pb.BringToFront();                 pb.Visible = true;                 pb.Parent = form;                 form.ShowDialog();                          });             th.Start();

            for (int i = 0; i < 1000;i++ )

            {                 Thread.Sleep(5);                 count = Convert.ToInt32(i * 1.0 / 1000 * (100 - 0) + 0);               Control control=  FindForm("myForm");               if (control!=null&&control.Name == "myForm" && control.IsHandleCreated)                 {                     control.Invoke(new Action(() => {                         ProgressBar pb = control.Controls[0] as ProgressBar;                         pb.Value = count;                     }));                                     }             }             th.Abort();         }         public Form FindForm(string name)         {

            foreach (Form f in Application.OpenForms)

            {

                if (f.Name == name) return f;

            }

            return null;

        }

 

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