（七十三）c#Winform自定义控件-资源加载窗体

前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

github：https://github.com/kwwwvagaa/netwinformcontrol

码云：

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nuget

install-package hzh_controls

目录

用处及效果

准备工作

这个用到了基类窗体  （十七）c#winform自定义控件-基类窗体 ，如果不了解可以先移步看一下

开始

添加一个窗体frmloading 继承 frmbase

东西不多，看全部代码

  1 // ***********************************************************************
  2 // assembly         : hzh_controls
  3 // created          : 2019-09-26
  4 //
  5 // ***********************************************************************
  6 // <copyright file="frmloading.cs">
  7 //     copyright by huang zhenghui(黄正辉) all, qq group:568015492 qq:623128629 email:[e-mail]
  8 // </copyright>
  9 //
 10 // blog: https://www.cnblogs.com/bfyx
 11 // github：https://github.com/kwwwvagaa/netwinformcontrol
 12 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
 13 //
 14 // if you use this code, please keep this note.
 15 // ***********************************************************************
 16 using system;
 17 using system.collections.generic;
 18 using system.componentmodel;
 19 using system.data;
 20 using system.drawing;
 21 using system.linq;
 22 using system.text;
 23 using system.threading;
 24 using system.windows.forms;
 25 
 26 namespace hzh_controls.forms
 27 {
 28     /// <summary>
 29     /// class frmloading.
 30     /// implements the <see cref="hzh_controls.forms.frmbase" />
 31     /// </summary>
 32     /// <seealso cref="hzh_controls.forms.frmbase" />
 33     public partial class frmloading : frmbase
 34     {
 35         /// <summary>
 36         /// the update database worker
 37         /// </summary>
 38         backgroundworker updatedbworker = new backgroundworker();
 39         /// <summary>
 40         /// 获取或设置加载任务
 41         /// </summary>
 42         /// <value>the background work action.</value>
 43         public action backgroundworkaction
 44         {
 45             get;
 46             set;
 47         }
 48         /// <summary>
 49         /// 设置当前执行进度及任务名称，key:任务进度，取值0-100  value：当前任务名称
 50         /// </summary>
 51         /// <value>the current msg.</value>
 52         public keyvaluepair<int, string> currentmsg
 53         {
 54             set
 55             {
 56                 this.updatedbworker.reportprogress(value.key, value.value);
 57             }
 58         }
 59         /// <summary>
 60         /// initializes a new instance of the <see cref="frmloading"/> class.
 61         /// </summary>
 62         public frmloading()
 63         {
 64             initializecomponent();
 65             this.updatedbworker.workerreportsprogress = true;
 66             this.updatedbworker.workersupportscancellation = true;
 67             this.updatedbworker.dowork += new doworkeventhandler(this.backgroundworker1_dowork);
 68             this.updatedbworker.progresschanged += new progresschangedeventhandler(this.backgroundworker1_progresschanged);
 69         }
 70         /// <summary>
 71         /// 设置进度信息，重写此函数可以处理界面信息绑定
 72         /// </summary>
 73         /// <param name="strtext">进度任务名称</param>
 74         /// <param name="intvalue">进度值</param>
 75         protected virtual void bindingprocessmsg(string strtext, int intvalue)
 76         {
 77 
 78         }
 79 
 80         /// <summary>
 81         /// sets the message.
 82         /// </summary>
 83         /// <param name="strtext">the string text.</param>
 84         /// <param name="intvalue">the int value.</param>
 85         private void setmessage(string strtext, int intvalue)
 86         {
 87             if (this.invokerequired)
 88             {
 89                 this.begininvoke(new methodinvoker(delegate() { setmessage(strtext, intvalue); }));
 90             }
 91             else
 92             {
 93                 bindingprocessmsg(strtext, intvalue);
 94             }
 95         }
 96 
 97         /// <summary>
 98         /// handles the load event of the frmloading control.
 99         /// </summary>
100         /// <param name="sender">the source of the event.</param>
101         /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
102         private void frmloading_load(object sender, eventargs e)
103         {
104             if (controlhelper.isdesignmode())
105                 return;
106             this.updatedbworker.runworkerasync();
107         }
108 
109         /// <summary>
110         /// handles the dowork event of the backgroundworker1 control.
111         /// </summary>
112         /// <param name="sender">the source of the event.</param>
113         /// <param name="e">the <see cref="doworkeventargs"/> instance containing the event data.</param>
114         private void backgroundworker1_dowork(object sender, doworkeventargs e)
115         {
116             if (this.backgroundworkaction != null)
117             {
118                 this.backgroundworkaction();
119             }
120             thread.sleep(100);
121             if (base.invokerequired)
122             {
123                 base.begininvoke(new methodinvoker(delegate
124                 {
125                     base.close();
126                 }));
127             }
128             else
129             {
130                 base.close();
131             }
132         }
133 
134         /// <summary>
135         /// handles the progresschanged event of the backgroundworker1 control.
136         /// </summary>
137         /// <param name="sender">the source of the event.</param>
138         /// <param name="e">the <see cref="progresschangedeventargs"/> instance containing the event data.</param>
139         private void backgroundworker1_progresschanged(object sender, progresschangedeventargs e)
140         {
141             setmessage((e.userstate == null) ? "" : e.userstate.tostring(), e.progresspercentage);
142         }
143     }
144 }

 

说明：

backgroundworkaction：加载资源任务函数

currentmsg：当前需要显示的进度信息，key:任务进度，取值0-100  value：当前任务名称

bindingprocessmsg：向界面绑定数据，子类需要重写此函数来实现向界面绑定显示数据

 

示例：

添加一个窗体frmtestloading 继承frmloading

添加一个文本label1显示进度信息文字

添加一个进度条ucprocesslineext1显示进度值

重新bindingprocessmsg绑定信息

1 protected override void bindingprocessmsg(string strtext, int intvalue)
2         {
3             label1.text = strtext;
4             this.ucprocesslineext1.value = intvalue;
5         }

调用

 1  frmtestloading frmloading = new frmtestloading();
 2                     frmloading.backgroundworkaction = delegate()
 3                     {
 4                         try
 5                         {
 6                             frmloading.currentmsg = new keyvaluepair<int, string>(1, "正在初始化配置...");
 7                             thread.sleep(1000);
 8                             frmloading.currentmsg = new keyvaluepair<int, string>(10, "正在加载第一个资源...");
 9                             thread.sleep(1000);
10                             frmloading.currentmsg = new keyvaluepair<int, string>(20, "正在加载第二个资源...");
11                             thread.sleep(1000);
12                             frmloading.currentmsg = new keyvaluepair<int, string>(30, "正在加载第三个资源...");
13                             thread.sleep(1000);
14                             frmloading.currentmsg = new keyvaluepair<int, string>(40, "正在加载第四个资源...");
15                             thread.sleep(1000);
16                             frmloading.currentmsg = new keyvaluepair<int, string>(50, "正在加载第五个资源...");
17                             thread.sleep(1000);
18                             frmloading.currentmsg = new keyvaluepair<int, string>(60, "正在加载第六个资源...");
19                             thread.sleep(1000);
20                             frmloading.currentmsg = new keyvaluepair<int, string>(70, "正在加载第七个资源...");
21                             thread.sleep(1000);
22                             frmloading.currentmsg = new keyvaluepair<int, string>(80, "正在加载第八个资源...");
23                             thread.sleep(1000);
24                             frmloading.currentmsg = new keyvaluepair<int, string>(90, "正在加载第九个资源...");
25                             thread.sleep(1000);
26                             frmloading.currentmsg = new keyvaluepair<int, string>(1000, "数据加载完成...");
27                             thread.sleep(1000);
28                         }
29                         catch (exception ex)
30                         {
31                             messagebox.show("加载资源时出现错误");
32                         }
33                     };
34                     frmloading.showdialog();

 

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