C# 如何设计一个标准的等待窗体

作者:C/S原创发布日期:2011/03/22 21:53:59

C# 如何设计一个标准的等待窗体

加载大批量数据时往往需要用户焦急等待，这不是好办法，比如系统在加载数据时暂停时刻放首曲子或显示一段迷人动画，我想用户不再那么焦急了。

贴图图片

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;

namespace ShowWaiting
{
   public partial class frmWaiting : Form
   {
      public static frmWaiting _Instance = null;

      /// <summary>
      /// 私有构造器,禁止外部实例化frmWaiting类
      /// </summary>
      private frmWaiting()
      {
         InitializeComponent();
      }

      /// <summary>
      /// 显示等待窗体
      /// </summary>
      /// <param name="owner"></param>
      public static void Show(Form owner)
      {
         owner.UseWaitCursor = true;

         if (_Instance == null) _Instance = new frmWaiting();
         _Instance.Owner = owner;
         _Instance.Show();

         Application.DoEvents();
      }

      /// <summary>
      /// 显示等待窗体
      /// </summary>
      /// <param name="owner"></param>
      public static void Show(Form owner, bool disableOwner)
      {
         owner.UseWaitCursor = true;
         owner.Enabled = !disableOwner;

         if (_Instance == null) _Instance = new frmWaiting();
         _Instance.Owner = owner;
         _Instance.Show();

         Application.DoEvents();
      }

      /// <summary>
      /// 隐藏等待窗体
      /// </summary>
      /// <param name="owner"></param>
      public static void Hide(Form owner)
      {
         owner.UseWaitCursor = false;
         owner.Enabled = true;

         if (_Instance != null) _Instance.Hide();
         Application.DoEvents();
      }
   }
}

// 来源:www.CSFramework.com, C/S结构框架学习网

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