WinForm 等待窗口代码,CSharp代码库,德仔网

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【CSharp】 WinForm 等待窗口
作者:Ansel / 发布于2015/7/23/ 721

	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Windows.Forms;
	using System.Threading;
	namespace BMSAP.Windows
	{
	
	class FrmWait : Form
	 {
	 ///<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.label1 = new System.Windows.Forms.Label();
	 this.SuspendLayout();
	 //
	 // label1
	 //
	 this.label1.Dock = System.Windows.Forms.DockStyle.Fill;
	 this.label1.Font = new System.Drawing.Font("Microsoft YaHei", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
	 this.label1.Location = new System.Drawing.Point(0, 0);
	 this.label1.Name = "label1";
	 this.label1.Size = new System.Drawing.Size(386, 60);
	 this.label1.TabIndex = 0;
	 this.label1.Text = "正 在 处 理 请 稍 候 ";
	 this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
	 //
	 // FrmWait
	 //
	 this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 17F);
	 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
	 this.ClientSize = new System.Drawing.Size(386, 60);
	 this.ControlBox = false;
	 this.Controls.Add(this.label1);
	 this.Font = new System.Drawing.Font("Microsoft YaHei", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
	 this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
	 this.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
	 this.Name = "FrmWait";
	 this.ShowIcon = false;
	 this.ShowInTaskbar = false;
	 this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
	 this.ResumeLayout(false);

	 }

	 #endregion
	 private System.Windows.Forms.Label label1;
	 public FrmWait()
	 {
	 InitializeComponent();
	 }
	 }
	 public delegate void ExecutedInvokeHeandle();

	 ///<summary>
	 /// 等待窗口
	 ///</summary>
	 public class WaitForm
	 {
	 ///<summary>
	 /// 等待窗口对象
	 ///</summary>
	 static FrmWait mWait;
	 ///<summary>
	 /// 事件状态通知
	 ///</summary>
	 static AutoResetEvent mEvents;
	 ///<summary>
	 /// 显示状态
	 ///</summary>
	 static bool mShowing = false;
	 ///<summary>
	 /// 等待状态
	 ///</summary>
	 static bool mWaiting = false;
	 static WaitForm()
	 {
	 //全局等待信号
	 mEvents = new AutoResetEvent(false);
	 }
	 ///<summary>
	 /// 窗口关闭事件
	 ///</summary>
	 ///<param name="sender"></param>
	 ///<param name="e"></param>
	 static void WaitForm_FormClosed(object sender, FormClosedEventArgs e)
	 {

	 if (mWaiting || !(sender is FrmWait))
	 {
	 //信号等待中被异常关闭,或主窗口被关闭时自动通知信号复位
	 mEvents.Set();
	 return;
	 }
	 mShowing = false;
	 //回收等待窗口
	 try
	 {
	 mWait.Dispose();
	 }
	 finally
	 {
	 mWait = null;
	 }
	 }
	 ///<summary>
	 /// 显示等待窗口
	 ///</summary>
	 ///<param name="pComponet">调用对象,可为控件或窗口</param>
	 public static void Show(Control pComponet)
	 {
	 //已显示则返回
	 if (mShowing)
	 return;
	 //创建等待窗口
	 mWait = new FrmWait();
	 //设置窗口关闭事件
	 mWait.FormClosed += new FormClosedEventHandler(WaitForm_FormClosed);
	 //启动显示线程
	 Thread tmpThread = new Thread(show);
	 tmpThread.Start(pComponet);
	 }
	 ///<summary>
	 /// 关闭等待窗口
	 ///</summary>
	 public static void Close()
	 {

	 if (mShowing)
	 //如果显示中则设置关闭信号
	 mEvents.Set();
	 //修改等待状态
	 mWaiting = false;
	 }
	 ///<summary>
	 /// 显示窗口过程
	 ///</summary>
	 ///<param name="pComponet"></param>
	 static void show(object pComponet)
	 {
	 if (pComponet != null &&
	 pComponet is Control)
	 {
	 //设置显示状态
	 mShowing = true;
	 //当调用对象为Win控件时
	 (pComponet as Control).BeginInvoke(new ExecutedInvokeHeandle(delegate()
	 {
	 //进行异步调用
	 if (pComponet != null &&
	 pComponet is Control)
	 {
	 //显示等待窗口
	 mWait.Show((pComponet as Control).FindForm());
	 //设置父级窗口关闭事件
	 (pComponet as Control).FindForm().FormClosed += new FormClosedEventHandler(WaitForm_FormClosed);
	 //激活父级窗口,
	 (pComponet as Control).FindForm().Activate();
	 }
	 else
	 {
	 //如查询不到父级窗口设置顶层显示,此处可用GetDesktop的API来获取桌面窗口,并设置为父级窗口
	 mWait.TopMost = true;
	 //显示等待窗口
	 mWait.Show();
	 }
	 }));
	 //设置等待信号
	 mWaiting = true;
	 mEvents.WaitOne();
	 //等待结束
	 mWaiting = false;
	 (pComponet as Control).BeginInvoke(new ExecutedInvokeHeandle(delegate()
	 {
	 //关闭窗口
	 mWait.Close();
	 }));

	 }
	 }
	 }
	}
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