实现winfrom进度条及进度信息提示,winfrom程序假死处理

 

1、方法一:使用线程

     功能描述:在用c#做WinFrom开发的过程中。我们经常需要用到进度条(ProgressBar)用于显示进度信息。这时候我们可能就需要用到多线程,如果不采用多线程控制进度条,窗口很容易假死(无法适时看到进度信息)。下面我就简单结合一个我写的例子给大家做一个介绍。

第一步:设计界面,注意需要引用 using System.Threading;

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华
控件名称分别为:
progressBar1;label1;textBox1;button1;

第二步:定义一个代理,用于更新ProgressBar的值(Value)及在执行方法的时候,返回方法的处理信息。

        private delegate void SetPos(int ipos,string vinfo);//代理

第三步:进度条值更新函数(参数必须跟声明的代理参数一样)

        private void SetTextMesssage(int ipos,string vinfo)
        {
            if (this.InvokeRequired)
            {
                SetPos setpos = new SetPos(SetTextMesssage);
                this.Invoke(setpos, new object[] { ipos,vinfo });
            }
            else
            {
                this.label1.Text = ipos.ToString() + "/1000";
                this.progressBar1.Value = Convert.ToInt32(ipos);
                this.textBox1.AppendText(vinfo);
            }
        }

第四步:函数实现

        private void button1_Click(object sender, EventArgs e)
        {
            Thread fThread = new Thread(new ThreadStart(SleepT));
            fThread.Start();
        }

第五步:新的线程执行函数:

        private void SleepT()
        {
            for (int i = 0; i < 500; i++)
            {
                System.Threading.Thread.Sleep(10);
                SetTextMesssage(100*i/500,i.ToString()+"\r\n");
            }
        }

程序运行效果图:

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华
 
=========================================================================================
2、第二种方法:
     功能描述:该种方法通过控件backgroundWorker1实现,进度条。却进度条在一个模板窗体内。
 
第一步:主窗体设计:
 

 控件名称:

button1;backgroundWorker1;

对backgroundWorker1控件,属性设置:

 
 

 第二步:主页面后台代码:

using System.Threading;//引用空间名称

        private void button1_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.RunWorkerAsync(); // 运行 backgroundWorker 组件

            ProcessForm form = new ProcessForm(this.backgroundWorker1);// 显示进度条窗体
            form.ShowDialog(this);
            form.Close();
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                MessageBox.Show(e.Error.Message);
            }
            else if (e.Cancelled)
            {
            }
            else
            {
            }
        }
        //你可以在这个方法内,实现你的调用,方法等。
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            for (int i = 0; i < 100; i++)
            {
                Thread.Sleep(100);
                worker.ReportProgress(i);
                if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码 
                {
                    e.Cancel = true;
                    break;
                }
            }
        }
分别为button控件和backgroundWorker1控件选好事件。

第三步:设置子窗体(及显示进度条的窗体):

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华
控件名称:
progressBar1;button1
 
第四步:子窗体,后台代码:

         private BackgroundWorker backgroundWorker1; //ProcessForm 窗体事件(进度条窗体)

        public ProcessForm(BackgroundWorker backgroundWorker1)
        {
            InitializeComponent();

            this.backgroundWorker1 = backgroundWorker1;
            this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }

        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            //this.Close();//执行完之后,直接关闭页面
        }

        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.CancelAsync();
            this.button1.Enabled = false;
            this.Close();
        }
    }

只为button选好事件
 

执行效果为:

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华

 =================================================================================================

3、第三种方法:

     功能描述:在处理大量数据的时候,有时候方法的执行需要一定的时间,这时候往往会造成页面或程序的“假死”状态,给用户的体验度也不是很好。为了避免出现“假死”提高用户的体验度,在这里为这类型的方法加了一个进度条和一个文本框,进度条用于显示程序处理的进度,文本框用于显示在处理过程中,给与的提示。本方法主要使用了控件:backgroundWorker1;说明:本方法与上面的方法(方法二)基本类型,主要是设计和代码进行了一些修改。


 第一步:主窗体设计:

控件名称:

button1;backgroundWorker1;

对backgroundWorker1控件,属性设置:


 

第二步:主窗体 后台代码:

        private void button1_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.RunWorkerAsync(); // 运行 backgroundWorker 组件

            ProcessForm form = new ProcessForm(this.backgroundWorker1);// 显示进度条窗体
            form.ShowDialog(this);
            form.Close();
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                MessageBox.Show(e.Error.Message);
            }
            else if (e.Cancelled)
            {
            }
            else
            {
            }
        }
        //你可以在这个方法内,实现你的调用,方法等。
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            for (int i = 0; i < 100; i++)
            {
                Thread.Sleep(100);
                worker.ReportProgress(i, i.ToString() + "  你好!\r\n"); //注意:这里向子窗体返回信息值,这里是两个值,一个用于进度条,一个用于文本框的。
                if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码 
                {
                    e.Cancel = true;
                    break;
                }
            }
        }

第三步:设置子窗体(及显示进度条的窗体):

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华

 控件:

progressBar1;textBox1;button1

第四步:子窗体后台代码:

        private BackgroundWorker backgroundWorker1; //ProcessForm 窗体事件(进度条窗体)

        public ProcessForm(BackgroundWorker backgroundWorker1)
        {
            InitializeComponent();

            this.backgroundWorker1 = backgroundWorker1;
            this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }

        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            //this.Close();//执行完之后,直接关闭页面
        }

        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;
            this.textBox1.AppendText(e.UserState.ToString());//主窗体传过来的值,通过e.UserState.ToString()来接受
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.CancelAsync();
            this.button1.Enabled = false;
            this.Close();
        }

实现的效果:

实现winfrom进度条及进度信息提示,winfrom程序假死处理 - china_xuhua - 许华
注意:如果在程序为执行完,就点击取消的话,很有可能会报错的,这时候,你就修改一个方法:backgroundWorker1_ProgressChanged
如下:
        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;
            this.textBox1.Text += e.UserState.ToString(); //主窗体传过来的值,通过e.UserState.ToString()来接受
        }
       把这个方法,替换上边的那个方法,就可以了。
=====================================================================================================
4、第四种方法:
     功能描述:本方法实现进度条显示,方法执行信息反馈显示。用到的技术点为 线程与代理。
     
    步骤一:添加主页面。
        
控件名称:
button1;
 
  步骤二:主页面后台代码
        using System.Threading;//引用此命名
 
        //创建代理。
        private Form6 myProcessBar = null;//弹出的子窗体(用于显示进度条)
        private delegate bool IncreaseHandle(int nValue,string vinfo);//代理创建
        private IncreaseHandle myIncrease = null;//声明代理,用于后面的实例化代理
        private int vMax = 100;//用于实例化进度条,可以根据自己的需要,自己改变
 
        private void button1_Click(object sender, EventArgs e)
        {
            Thread thdSub = new Thread(new ThreadStart(ThreadFun));
            thdSub.Start();
        }
        private void ThreadFun()
        {
            MethodInvoker mi = new MethodInvoker(ShowProcessBar);
            this.BeginInvoke(mi);
            Thread.Sleep(100);
            object objReturn = null;
            for (int i = 0; i < vMax; i++)
            {
                objReturn = this.Invoke(this.myIncrease, new object[] { 2, i.ToString() + "\r\n" });
                Thread.Sleep(50);
            }
        }
        private void ShowProcessBar()
        {
            myProcessBar = new Form6(vMax);
            myIncrease = new IncreaseHandle(myProcessBar.Increase);
            myProcessBar.ShowDialog();
            myProcessBar = null;
        }
 
步骤三:创建子窗体
 
 控件名称:
progressBar1;textBox1
 
步骤四:子窗体,后台代码
        public Form6(int vMax)
        {
            InitializeComponent();
            this.progressBar1.Maximum = vMax;
        }
        public bool Increase(int nValue,string nInfo)
        {
            if (nValue > 0)
            {
                if (progressBar1.Value + nValue < progressBar1.Maximum)
                {
                    progressBar1.Value += nValue;
                    this.textBox1.AppendText(nInfo);
                    Application.DoEvents();
                    progressBar1.Update();
                    progressBar1.Refresh();
                    this.textBox1.Update();
                    this.textBox1.Refresh();
                    return true;
                }
                else
                {
                    progressBar1.Value = progressBar1.Maximum;
                    this.textBox1.AppendText(nInfo);
                    //this.Close();//执行完之后,自动关闭子窗体
                    return false;
                }
            }
            return false;
        }
 
执行效果:
posted on 2015-09-02 11:41  zrSoldier  阅读(9540)  评论(0编辑  收藏