c# winForm 等待窗体的实现

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.Threading;
 10 
 11 namespace ControlToolsLibrary
 12 {
 13     public partial class LoadingControl : Form
 14     {
 15 
 16         public delegate void mydelegate();
 17         public mydelegate eventMethod;
 18         private static LoadingControl pLoading = new LoadingControl();
 19         delegate void SetTextCallback(string title,string caption,string description);
 20         delegate void CloseFormCallback();
 21         public LoadingControl()
 22         {
 23             InitializeComponent();
 24             initLoadintForm();
 25             Thread t = new Thread(new ThreadStart(delegateEventMethod));
 26             t.IsBackground = true;
 27             t.Start();
 28         }
 29 
 30         private void LoadingControl_FormClosing(object sender, FormClosingEventArgs e)
 31         {
 32             if (!this.IsDisposed)
 33             {
 34                 this.Dispose(true);
 35             }
 36         }
 37 
 38         private void initLoadintForm() {
 39             this.ControlBox = false;   // 设置不出现关闭按钮
 40             this.StartPosition = FormStartPosition.CenterParent;
 41         }
 42 
 43         private void delegateEventMethod()
 44         {
 45             eventMethod();
 46         }
 47 
 48         public static LoadingControl getLoading()
 49         {
 50             if (pLoading.IsDisposed)
 51             {
 52                 pLoading = new LoadingControl();
 53                 return pLoading;
 54             }
 55             else
 56             {
 57                 return pLoading;
 58             }
 59         }
 60 
 61         //这种方法演示如何在线程安全的模式下调用Windows窗体上的控件。  
 62         /// <summary>
 63         /// 设置Loading 窗体的 标题title,标签 caption 和描述 description
 64         /// </summary>
 65         /// <param name="title">窗口的标题[为空时，取默认值]</param>
 66         /// <param name="caption">标签（例如:please wait）[为空时，取默认值]</param>
 67         /// <param name="description">描述(例如：正在加载资源...)[为空时，取默认值]</param>
 68         public void SetCaptionAndDescription(string title,string caption, string description)
 69         {
 70             if (this.InvokeRequired&&LoadingControl.lbl_caption.InvokeRequired && LoadingControl.lbl_description.InvokeRequired)
 71             {
 72                 SetTextCallback d = new SetTextCallback(SetCaptionAndDescription);
 73                 this.Invoke(d, new object[] { title,caption, description });
 74             }
 75             else
 76             {
 77                 if (!title.Equals("")) {
 78                     this.Text = title;
 79                 }
 80                 if (!caption.Equals(""))
 81                 {
 82                     LoadingControl.lbl_caption.Text = caption;
 83                 }
 84                 if (!description.Equals("")) {
 85                     LoadingControl.lbl_description.Text = description;
 86                 }
 87             }
 88         }
 89 
 90         public  void CloseLoadingForm()
 91         {
 92             if (this.InvokeRequired)
 93             {
 94                 CloseFormCallback d = new CloseFormCallback(CloseLoadingForm);
 95                 this.Invoke(d, new object[] {  });
 96             }
 97             else
 98             {
 99                 if (!this.IsDisposed)
100                 {
101                     this.Dispose(true);
102                 }
103             }
104         }
105 
106         public void SetExecuteMethod(mydelegate method)
107         {
108               this.eventMethod += method;
109         }
110 
111 
112     }
113 }