等待窗口的制作

        LoadTip waitMess = new LoadTip();//等待窗体

        bool sFlog = true;

        //--显示等待窗体 

        private void ShowWaitMess()

        {

            try

            {

                if (!waitMess.IsDisposed)

                {

                    waitMess.ShowDialog();

                }



            }

            catch (ThreadAbortException Err)

            {

                MessageBox.Show(Err.Message);

            }

        }



        //--新开辟一个线程调用 

        public void WaitShow(string msg)

        {

            try

            {

                if ( sFlog == true)

                {

                    sFlog = false;

                    waitMess.Msg = msg;

                    Thread upgradeThread = null;

                    upgradeThread = new Thread(new ThreadStart(ShowWaitMess));

                    upgradeThread.Start();

                }

            }

            catch (ThreadAbortException Err)

            {

                MessageBox.Show(Err.Message);

            }

        }



        private delegate void CloseFormDelegate();



        //--关闭等待窗体 

        public void WaitClose()

        {

            //同步到主线程上

            if (waitMess.InvokeRequired)

                waitMess.Invoke(new CloseFormDelegate(DoCloseJob));

            else

                DoCloseJob();

        }



        private void DoCloseJob()

        {

            try

            {

                if (!waitMess.IsDisposed)

                {

                    if (waitMess.Created)

                    {

                        sFlog = true;

                        waitMess.Close();

                    }

                }

            }

            catch (ThreadAbortException Err)

            {

                MessageBox.Show(Err.Message);

            }

        }

namespace WindowsApplication2

{

    public partial class Form2 : Form

    {       

        public Form2()

        {

            InitializeComponent();  

        }



        public  delegate void showprogress();

        private void Form2_Load(object sender, EventArgs e)

        {

            this.progressBar1.Maximum = 100;

            this.progressBar1.Minimum = 0;

            new System.Threading.Thread(new System.Threading.ThreadStart (ShowBar)).Start();

         }

        public void ShowBar()

        {

            if (this.InvokeRequired)

                this.Invoke(new showprogress(ShowBar));

            else

            {

                for (int i = 0; i < 101; i++)

                {

                    this.label1.Text = i.ToString() + "%";

                    this.progressBar1.Value = i;

                    System.Threading.Thread.Sleep(100);

                    if (i == 100)

                        this.Close();

                }

            }

        }         

    }

}

//frmwait.cs

//

//编译:csc frmwait.cs



using System;

using System.Threading;

using System.Windows.Forms;



class TestFrm:Form

{



	Button btn = new Button ();

	void bgThread (object arg)//后台线程

	{

		WaitForm wf = (WaitForm) arg;

		//todo: 在这里做后台工作,这里用个空循环

		int counter = 0;

		while (counter < 2000) {

			wf.Progress = counter / 2000f;

			counter++;

			Thread.Sleep (10);

		}

		MethodInvoker funcClose = wf.Close;

		wf.Invoke (funcClose);

	}

	TestFrm ()

	{

		Controls.Add (btn);

		btn.Text = "开始后台工作";

		btn.Click += btn_click;

	}

	void btn_click (object sender,EventArgs e)

	{

		WaitForm wf = new WaitForm();

		Thread th = new Thread (bgThread);

		th.Start(wf);

		wf.ShowDialog();

		MessageBox.Show ("后台操作完成!");

	}

	static void Main ()

	{

		Application.EnableVisualStyles();

		Application.Run(new TestFrm());

	}

}



class WaitForm:Form

{

	ProgressBar pb = new ProgressBar ();

	public WaitForm()

	{

		

		this.FormBorderStyle = FormBorderStyle.FixedSingle;

		this.MaximizeBox = false;

		this.MinimizeBox = false;

		this.Width = 200;

		this.Height = 50;

		this.StartPosition = FormStartPosition.CenterParent;

		this.ControlBox = false;



		pb.Dock = DockStyle.Fill;

		pb.Maximum = 100;

		Controls.Add (pb);

		Text = "后台操作中...";

	}



	public float Progress

	{

		get{

			float ret = 0f;

			MethodInvoker func = delegate()

			{

				ret = pb.Value / (float)pb.Maximum;

			};

			if (this.InvokeRequired)

				Invoke (func);

			else

				func();

			return ret;

		}

		set

		{

			MethodInvoker func = delegate()

			{

				pb.Value = (int)(pb.Maximum * value);

				this.Text = string.Format ("后台操作中,已完成{0}%",value*100);

			};

			if (this.InvokeRequired)

				Invoke (func);

			else

				func();

		}

	}

}