C# wimform 实现等待窗口

你要的是进度条吧。
http://hi.baidu.com/cnwhm/blog/item/fd937c34fc4e1a205ab5f5ce.html

//主窗体
public partial class DelegateBeginInvoke : Form
    {
        public DelegateBeginInvoke()
        {
            InitializeComponent();
        }        //定义与方法同签名的委托
        private delegate string DelegateName(int num, out int ret);
        private delegate void DelegateA();
        private delegate void Delegate赋值(string 值);
        formTimer f = new formTimer();        //要进行异步的方法
        private string MethodName(int num, out int ret)
        {
            ret = num;
            System.Threading.Thread.Sleep(10000);
            return "HelloWorld";
        }        private void button1_Click(object sender, EventArgs e)
        {
            label1.Text = "";
            //实例化委托并初赋值
            DelegateName dn = new DelegateName(MethodName);
            int i;
            //实例化回调函数，把AsyncCallback看成是Delegate就懂了，实际上AsyncCallback是一种特殊的Delegate
            AsyncCallback acb = new AsyncCallback(CallBackMethod);
            //异步开始
            //如果参数acb换成null则表示没有回调方法
            //最后一个参数dn的地方，可以换成任意对象，该对象可以被回调方法从参数中获取出来，写成null也可以。
            //参数dn相当于该线程的ID，如果有多个异步线程，可以都是null，但是绝对不能一样，不能是同一个object，否则异常
            IAsyncResult iar = dn.BeginInvoke(1, out i, acb, dn);
            textBox1.Text = Environment.UserName.ToString();
            f = new formTimer();
            f.Show();
        }        //回调方法(异步完成时，执行的方法，此方法只有IAsyncResult一个参数，但是该参数几乎万能，可以传递Object)
        private void CallBackMethod(IAsyncResult ar)
        {
            DelegateName dn = (DelegateName)ar.AsyncState;            int i;            string r = dn.EndInvoke(out i, ar);//一定要EndInvoke，否则你的下场很惨
            DelegateA dd = new DelegateA(formClose);
            if (f.InvokeRequired)
                this.Invoke(dd);
            else
                formClose();
            //MessageBox.Show("异步完成了！i的值是" + i.ToString() + ",r的值是" + r);
            Delegate赋值 dd赋值 = new Delegate赋值(赋值);
            if (label1.InvokeRequired)
            {
                this.Invoke(dd赋值, new object[] { "异步完成了！i的值是" + i.ToString() + ",r的值是" + r });
            }
            else
            {
                textBox1.Text = "异步完成了！i的值是" + i.ToString() + ",r的值是" + r;
            }
        }        void formClose()
        {
            f.Close();
        }
        void 赋值(string aa)
        {
            label1.Text = aa;
        }    }

//弹出的提示窗体
public partial class formTimer : Form
    {
        public formTimer()
        {
            InitializeComponent();
        }
        DateTime a = DateTime.Now;
        private void formTimer_Load(object sender, EventArgs e)
        {
            label1.Text = (DateTime.Now - a).Seconds.ToString();
            timer1.Enabled = true;
        }        private void timer1_Tick(object sender, EventArgs e)
        {
            label1.Text = (DateTime.Now - a).Seconds.ToString();
        }
    }
//弹出窗体的designer.cs文件  用于构建界面友好
partial class formTimer
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }        #region Windows Form Designer generated code        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.panel1 = new System.Windows.Forms.Panel();
            this.label1 = new System.Windows.Forms.Label();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            //
            // timer1
            //
            this.timer1.Interval = 1000;
            this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
            //
            // panel1
            //
            this.panel1.BackColor = System.Drawing.Color.Transparent;
            this.panel1.Controls.Add(this.label1);
            this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.panel1.Location = new System.Drawing.Point(0, 0);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(121, 66);
            this.panel1.TabIndex = 0;
            //
            // label1
            //
            this.label1.AutoSize = true;
            this.label1.BackColor = System.Drawing.Color.Transparent;
            this.label1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.label1.Font = new System.Drawing.Font("SimSun", 30F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.label1.ForeColor = System.Drawing.Color.Red;
            this.label1.Location = new System.Drawing.Point(0, 0);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(0, 40);
            this.label1.TabIndex = 0;
            //
            // formTimer
            //
            this.BackColor = System.Drawing.Color.White;
            this.ClientSize = new System.Drawing.Size(121, 66);
            this.Controls.Add(this.panel1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "formTimer";
            this.ShowInTaskbar = false;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.TopMost = true;
            this.TransparencyKey = System.Drawing.SystemColors.ControlText;
            this.Load += new System.EventHandler(this.formTimer_Load);
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            this.ResumeLayout(false);        }        #endregion        private System.Windows.Forms.Timer timer1;
        private System.Windows.Forms.Panel panel1;
        private System.Windows.Forms.Label label1;

http://hi.baidu.com/xdragon/blog/item/b845c650b745f0591138c253.html

异步委托应该不行把,等待过程中界面也会卡的,最好还是用Thread写

可以使用BackgroundWork
或者自己开一个Thread，后台运行。

  //写了一个backgroundWorker例子
  //主界面拖一个backgroundWorker组件
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
       this.backgroundWorker1.DoWork += new System.ComponentModel.DoWorkEventHandler(this.backgroundWorker1_DoWork);
      this.backgroundWorker1.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(this.backgroundWorker1_RunWorkerCompleted);
    }    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
      WaitMethod();
    }    private void WaitMethod()
    {
      //模拟等待操作
      Thread.Sleep(5000);      //这里不能使用界面控件
      //如果要使用,要委托和this.Invoke()
    }    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
      if (_WaitForm != null && !_WaitForm.IsDisposed)
      {
        _WaitForm.Close();
      }
    }    //开始
    ProgressBarFrom _WaitForm = null;
    private void button1_Click(object sender, EventArgs e)
    {
      if (!backgroundWorker1.IsBusy)
      {
        backgroundWorker1.RunWorkerAsync();
      }      _WaitForm = new ProgressBarFrom();
      _WaitForm.Show();
    }
  }   //ProgressBarFrom 窗体只需要拉一个 ProgressBar控件,Style设置为:Marquee

调试易

C# wimform 实现等待窗口

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