当流程完成100％时，我的进度条不会关闭

问题描述

我在c＃代码中添加了一个进度条来监控完成的工作。



进度条打开并运行良好，但在完成此过程时不会关闭。它让我

Hi,

I have added a progress bar to my c# code to monitor a work getting completed.

The progress bar opens and works great, but it doesn't close when the process is completed. and it is throwing me "

System.InvalidOperationException: 'A task may only be disposed if it is in a completion state (RanToCompletion, Faulted or Canceled).'

我尝试过：

"

What I have tried:

{
            var t = Task.Run(() => Showprogress());
            //Graphics g = e.Graphics;
            int i = 0;
            int j = 1;
            DirectoryInfo dinfo = new DirectoryInfo(filePath);
            FileInfo[] Files = dinfo.GetFiles("*.jpg");
            List<mat> imageStructure = new List<mat>();
            Dictionary<string, int> noOfObjects = new Dictionary<string, int>();
            foreach (FileInfo file in Files)
            {
                Image<Bgr, Byte> image = new Image<Bgr, Byte>(file.FullName);
                if (image != null)
                {
                    if (i < myprogress.getMaxValue())
                        myprogress.updateprogress(i);
                    else
                    {
                        j++;
                        myprogress.setMaxValue(j*100);
                    }
                    i++;
                    myRectangles.Clear();
                    var detections = this._yoloWrapper.Detect(ImageToByte(image.Bitmap)).ToList();
                    foreach (var dect in detections)
                    {
                        if (CheckMarkingForDisplay(dect))
                            if (noOfObjects.Keys.Contains(dect.Type))
                                noOfObjects[dect.Type] += 1;


                            else
                                noOfObjects.Add(dect.Type, 1);
                        

                    }
                }
            }
            String csv = String.Join(Environment.NewLine, "Object Type, Count" + Environment.NewLine);
            csv = csv + String.Join(Environment.NewLine, noOfObjects.Select(d => d.Key + "," + d.Value));
            if (!Directory.Exists(@"C:\CountingObject\" + dinfo.Name))
                Directory.CreateDirectory(@"C:\CountingObject\" + dinfo.Name);
            System.IO.File.WriteAllText(@"C:\CountingObject\" + dinfo.Name + @"\ObjectCount.csv", csv);
           myprogress.updateprogress(j*100);
           t.Dispose();      //the error is occurring here
           myprogress.Close();
        }

我用于进度条的功能是

The functions i am using for progress bar is

using System.Windows.Forms;

namespace SIMSVisionTool
{
    public partial class progressBar : Form
    {
        public progressBar(int maxvalue)
        {
            InitializeComponent();
            this.progressBar1.Value = 0;
            this.progressBar1.Maximum = maxvalue;
        }

        public void updateprogress(int i)
        {
            this.progressBar1.Invoke((MethodInvoker)delegate
            {
                // Running on the UI thread
                this.progressBar1.Value = i;
            });
        }

        public int getMaxValue()
        {
            return this.progressBar1.Maximum;
        }

        public void setMaxValue(int maxvalue)
        {
            this.progressBar1.Invoke((MethodInvoker)delegate
            {
                // Running on the UI thread
                this.progressBar1.Maximum = maxvalue;
            });
        }
    }
}

推荐答案

using System.Windows.Forms;

namespace SIMSVisionTool
{
    public partial class progressBar : Form
    {

        private Action _Action{ get; set; }

        public progressBar(int maxvalue, Action _action)
        {
            InitializeComponent();
             if(_action == null)
                Throw new NullArgumentException("The worker thread is null");
            this._Action = _action;
            this.progressBar1.Value = 0;
            this.progressBar1.Maximum = maxvalue;
        }

       public override void OnLoad(){
           // Load the page on a separate thread
                Task.Factory.StartNew(_Action).ContinueWith(t=>{t.Close();}, TaskScheduler.FromCurrentSynchronizationContext());
       }

        public void updateprogress(int i)
        {
            this.progressBar1.Invoke((MethodInvoker)delegate
            {
                // Running on the UI thread
                this.progressBar1.Value = i;
            });
        }

        public int getMaxValue()
        {
            return this.progressBar1.Maximum;
        }

        public void setMaxValue(int maxvalue)
        {
            this.progressBar1.Invoke((MethodInvoker)delegate
            {
                // Running on the UI thread
                this.progressBar1.Maximum = maxvalue;
            });
        }
    }
}

这是在问题上实现它的方法/>

Here is the way to implement it on the Problem

class myWorkerClass{
        
        public void StartWork(){
            // Here you initialize the form passing in the maximum value and the method to execute asyncronously
            myprogress = new progressBar(maxValue, getImages);

        }
          
// The helper Method To Pass In as the action delegate 


    private void getImages(){
        int i = 0;
        int j = 1;
        DirectoryInfo dinfo = new DirectoryInfo(filePath);
        FileInfo[] Files = dinfo.GetFiles("*.jpg");
        List<mat> imageStructure = new List<mat>();
        Dictionary<string, int> noOfObjects = new Dictionary<string, int>();
        foreach (FileInfo file in Files)
        {
            Image<Bgr, Byte> image = new Image<Bgr, Byte>(file.FullName);
            if (image != null)
            {
                if (i < myprogress.getMaxValue())
                    myprogress.updateprogress(i);
                else
                {
                    j++;
                    myprogress.setMaxValue(j*100);
                }
                i++;
                myRectangles.Clear();
                var detections = this._yoloWrapper.Detect(ImageToByte(image.Bitmap)).ToList();
                foreach (var dect in detections)
                {
                    if (CheckMarkingForDisplay(dect))
                        if (noOfObjects.Keys.Contains(dect.Type))
                            noOfObjects[dect.Type] += 1;


                        else
                            noOfObjects.Add(dect.Type, 1);
                    

                }
            }
        }
        String csv = String.Join(Environment.NewLine, "Object Type, Count" + Environment.NewLine);
        csv = csv + String.Join(Environment.NewLine, noOfObjects.Select(d => d.Key + "," + d.Value));
        if (!Directory.Exists(@"C:\CountingObject\" + dinfo.Name))
            Directory.CreateDirectory(@"C:\CountingObject\" + dinfo.Name);
        System.IO.File.WriteAllText(@"C:\CountingObject\" + dinfo.Name + @"\ObjectCount.csv", csv);
       myprogress.updateprogress(j*100);
   }
}

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