Barre de progression et MVC

**GreatDeveloperOnizuka** · 13/12/2010, 12h10

Bonjour,

J'essaie de respecter le MVC et je voudrais mettre un barre de progression. En fait, j'ouvre tous les fichiers d'un répertoire et fais des traitements dessus (environ 10 000). Mais comment faire dans ce cas pour revenir dans la forme principale pour remettre à jour l'affichage durant le traitement qui se fait dans la couche model?

Merci.

**davjan** · 13/12/2010, 14h01

Regarde du coté du backgroundWorker, tu devrais trouver des exemples sur le net.

**GreatDeveloperOnizuka** · 13/12/2010, 14h17

Je sais comment utiliser le BackGroundWorker mais je ne vois pas comment placer le traitement dans le DoWork.

Actuellement mon code est de la manière suivante :

Code :

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//Code de la vue
public partial class MainForm : Form
    {
        private Controleur controleur;
        private XmlDocument xmlDoc;
        private XmlNode node;
        string applicationName;
        public MainForm()
        {
            InitializeComponent();
            controleur = new Controleur();
 
            xmlDoc = new XmlDocument();
            // Path of exe
            // The first element of the array is the path of the exe
            string exePath = Environment.GetCommandLineArgs()[0];
            // Directory of the exe
            string exeDir = System.IO.Path.GetDirectoryName(exePath);
            applicationName = exeDir + "\\" + "Repetabilite SCG.exe.config";
            xmlDoc.Load(applicationName);
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='directory1']");
            this.txtBoxDir1.Text = node.Attributes[1].Value;
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='directory2']");
            this.txtBoxDir2.Text = node.Attributes[1].Value;
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='outputFile']");
            this.txtBoxFile.Text = node.Attributes[1].Value;
 
        }
 
        private void SaveInfoConfigFile()
        {
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='directory1']");
            node.Attributes[1].Value = this.txtBoxDir1.Text;
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='directory2']");
            node.Attributes[1].Value = this.txtBoxDir2.Text;
            node = xmlDoc.SelectSingleNode("configuration/appSettings/add[@key='outputFile']");
            node.Attributes[1].Value = this.txtBoxFile.Text;
            xmlDoc.Save(applicationName);
            ConfigurationManager.RefreshSection("appSettings");
        }
        private void ControlDirPath(TextBox txtBoxDir)
        {
            folderBrowserDialog.Description = "Choisissez votre répertoire";
            if (folderBrowserDialog.ShowDialog(this) == DialogResult.OK)
            {
                if (controleur.ControlDirectoryPath(folderBrowserDialog.SelectedPath))
                    txtBoxDir.Text = folderBrowserDialog.SelectedPath;
                else
                {
                    MessageBox.Show(this,
                    "Vous aves choisi " + folderBrowserDialog.SelectedPath + ", ce répertoire est incorrect.",
                    "Repertoire",
                    MessageBoxButtons.OK,
                    MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
                }
 
            }
        }
 
        private void folderButton1_Click(object sender, EventArgs e)
        {
            ControlDirPath(txtBoxDir1);
        }
 
        private void folderButton2_Click(object sender, EventArgs e)
        {
            ControlDirPath(txtBoxDir2);
        }
 
        private void buttonOK_Click(object sender, EventArgs e)
        {
            controleur.Dir1 = this.txtBoxDir1.Text;
            controleur.Dir2 = this.txtBoxDir2.Text;
            if (!String.IsNullOrEmpty(controleur.FileName))
            {
                SaveInfoConfigFile();
                controleur.ComparisonFiles();
            }
            else
            {
                MessageBox.Show("Renseignez le nom du fichier à créer.");
            }
        }
 
 
        private void fileButton_Click(object sender, EventArgs e)
        {
            // Sauvegarde du document
            saveFileDialog1.Title = "Sauvegarde";
            saveFileDialog1.DefaultExt = "txt";
            saveFileDialog1.Filter = "fichiers textes (*.xls)|*.xls|Tous les fichiers (*.*)|*.*";
            saveFileDialog1.FilterIndex = 1;
            // Ouverture boite de dialogue Enregistrer
            if (saveFileDialog1.ShowDialog(this) == DialogResult.OK)
            {
                controleur.FileName = saveFileDialog1.FileName;
                this.txtBoxFile.Text = saveFileDialog1.FileName;
            }
        }
    }

Code :

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//Code du controleur
public class Controleur
    {
        #region Attributes
        private List<String> fileList1 = new List<string>();
        private string fileName;
        private List<String> fileList2 = new List<string>();
 
        private String dir1;
        private string dir2;
 
        #endregion
        #region Properties
        /// <summary>
        /// Get or Set a System.String that represents the first directory
        /// </summary>
        public String Dir1
        {
            get { return dir1; }
            set { dir1 = value; }
        }
        /// <summary>
        /// Get or Set a System.String that represents the output file
        /// </summary>
        public string FileName
        {
            get { return fileName; }
            set
            {
                if (!string.Equals(value.Substring(value.Length - 4, 4), ".xls")) value += ".xls";
                fileName = value;
            }
        }
        /// <summary>
        /// Get or Set a System.String that represents the second directory
        /// </summary>
        public string Dir2
        {
            get { return dir2; }
            set { dir2 = value; }
        }
        /// <summary>
        /// Get or Set the file list 1
        /// </summary>
        public List<String> FileList1
        {
            get { return fileList1; }
        }
        /// <summary>
        /// Get or Set the file list 1
        /// </summary>
        public List<String> FileList2
        {
            get { return fileList2; }
        }
        #endregion
        #region Constructor
        /// <summary>
        /// Constructor
        /// </summary>
        public Controleur()
        {
 
        }
        #endregion
 
        #region Public methods
        /// <summary>
        /// Control the path of a directory
        /// </summary>
        /// <param name="directoryPath">A System.String that represents the path of a directory</param>
        /// <returns>A System.Boolean that represents the existing of a path</returns>
        public bool ControlDirectoryPath(string directoryPath)
        {
            return System.IO.Directory.Exists(directoryPath);
        }
        /// <summary>
        /// Launch the comparison between 2 directories
        /// </summary>
        public void ComparisonFiles()
        {
            LoadFiles(dir1, fileList1);
            LoadFiles(dir2, fileList2);
            FileReader fileReader = new FileReader(dir1, dir2);
            fileReader.Treatment(fileList1, fileList2);
            string[] array = new string[fileReader.Res.Count];
            fileReader.Res.CopyTo(array, 0);
            object[,] rawData = new object[array.Length, 5];//array for xls copy
 
            for (int i = 0; i < array.Length; i++)
            {
                string[] tmp = array[i].Split(' ');
                rawData[i, 0] = tmp[0];
                rawData[i, 1] = tmp[1];
                rawData[i, 2] = tmp[2];
                rawData[i, 3] = tmp[3];
                rawData[i, 4] = tmp[4];
            }
 
            TraitementExcel.ExcelWriter xls= new ExcelWriter();
            xls.Open(this.fileName);
 
            //Copy to a xls file
            string range = String.Format("A2:E{0}", array.Length + 1);
            xls.CopyArray(rawData, range);
 
            //Libération ressources
            fileReader.ClearRes();
            fileList1.Clear();
            FileList2.Clear();
        }
 
        #endregion
 
        #region Private methods
        private void LoadFiles(string directory, List<string> list)
        {
            string[] files;
            // pour avoir les noms des fichiers .s et sous-répertoires. A modifier si les fichiers peuvent avoir d'autres extensions
            files = Directory.GetFiles(directory, "*.s*", SearchOption.AllDirectories);
            //list.ad(files);
            list.AddRange(files);
        }
 
        #endregion
    }

Code :

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//Code model
public class FileReader
    {
        public struct ResultatComparaison
        {
            public double min;
            public double max;
            public double average;
            public double standardDeviation;
        }
 
        private string dir1;
        private string dir2;
        private Collection<String> res = new Collection<string>();
        /// <summary>
        /// Get the result dictionnary
        /// </summary>
        public Collection<String> Res
        {
            get { return res; }
        }
        /// <summary>
        /// Constructor
        /// </summary>
        public FileReader(string d1, string d2)
        {
            dir1 = d1;
            dir2 = d2;
        }
 
        /// <summary>
        /// Read a text file
        /// </summary>
        /// <param name="nomFichier">A System.String that represents the file name</param>
        private void FichierTexte(string nomFichier, List<String> fileList2)
        {
            StreamReader sr = null;
            StreamReader sr2 = null;
            string line;
            string line2;
            string fileNameWithoutPath = System.IO.Path.GetFileName(nomFichier);
            try
            {
                //A modifier dépendant du nom des fichiers
                if (File.Exists(System.IO.Path.Combine(dir2, fileNameWithoutPath)) && fileList2.Contains(System.IO.Path.Combine(dir2, fileNameWithoutPath)))
                {
                    // Ouverture des fichiers
                    sr2 = new StreamReader(System.IO.Path.Combine(dir2, fileNameWithoutPath));
                    sr = new StreamReader(nomFichier);
 
                    //traitement première ligne
                    line2 = sr2.ReadLine().Trim();
                    line = sr.ReadLine().Trim();
 
                    //header of file treatment
                    string[] header = line.Split(' ');
                    string[] header2 = line2.Split(' ');
                    Collection<Double> val = new Collection<double>(); ;
                    if (string.Equals(header[0], header2[0]) && string.Equals(header2[1], header[1]))
                    {
                        int lineCount = 1;
                        while (line != null)
                        {
                            line = sr.ReadLine();
                            line2 = sr2.ReadLine();
 
                            if (!String.IsNullOrEmpty(line))
                            {
                                line = line.Trim();
                                line2 = line2.Trim();
                                //treatment of lines
                                string[] valTmp = line.Split(' ');
                                string[] valTmp2 = line2.Split(' ');
                                string[] values = ResizeArray(valTmp);
                                string[] values2 = ResizeArray(valTmp2);                                
                                for (int i = 0; i < values.Length; i++)
                                {
                                    double v;
                                    double v2;
                                    double.TryParse(values[i], System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out v);
                                    double.TryParse(values2[i], System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out v2);
                                    double f = Math.Abs(v - v2);
                                    val.Add(f);
                                }
                                lineCount++;
                            }
                        }
                        double[] array = new double[val.Count];
                        val.CopyTo(array, 0);
                        ResultatComparaison r;
                        r.average = AverageFromDoubleArray(array);
                        r.max = Maximum(val);
                        r.min = Minimum(val);
                        r.standardDeviation = StandardDeviation(val, r.average);
                        val.Clear();
                        res.Add(fileNameWithoutPath.Replace(" ", "") + " " + 
                            r.min.ToString("0.0000000000") + " " +
                            r.max.ToString("0.0000000000") + " " +
                            r.average.ToString("0.0000000000") + " " +
                            r.standardDeviation.ToString("0.0000000000"));
                    }
                }                
            }
            finally
            {
                // Fermeture streamreader
                if (sr != null) sr.Close();
                if (sr2 != null) sr2.Close();
            }
        }
 
        private string[] ResizeArray(string[] array)
        {
            List<string> tmp = new List<string>(array.Length);
            for (int i = 0; i < array.Length; i++)
            {
                if (!string.IsNullOrEmpty(array[i])) tmp.Add(array[i]);
            }
            string[] res = new string[tmp.Count];
            tmp.CopyTo(res);
            tmp.Clear();
            return res;
        }
 
        #region Math
        private double StandardDeviation(Collection<double> doubleList, double average)
        {
            double sumOfDerivation = 0;
            foreach (double value in doubleList)
            {
                sumOfDerivation += (value) * (value);
            }
            double sumOfDerivationAverage = sumOfDerivation / doubleList.Count;
            return Math.Sqrt(sumOfDerivationAverage - (average * average));
        }
 
        private double Maximum(Collection<double> val)
        {
            //calculation of max, min, avg and sd
            double max = double.MinValue;
            foreach (double d in val)
            {
                if (d > max) max = d;
            }
            return max;
        }
 
        private double Minimum(Collection<double> val)
        {
            //calculation of max, min, avg and sd
            double min = double.MaxValue;
            foreach (double d in val)
            {
                if (d < min) min = d;
            }
            return min;
        }
        /// <summary>
        /// Calculate the average of all elements in a double array.
        /// </summary>
        /// <param name="dblArray">The double array to get the 
        /// average from.</param>
        /// <returns>The average of the double array</returns>
        private double AverageFromDoubleArray(double[] dblArray)
        {
            double dblResult = 0;
            foreach (double dblValue in dblArray)
                dblResult += dblValue;
            return dblResult / dblArray.Length;
        }
        #endregion
 
        public void Treatment(List<String> fileList1, List<String> fileList2)
        {
            foreach (string fileName in fileList1)
            {
                FichierTexte(fileName, fileList2);
            }
        }
        /// <summary>
        /// Clear result dictionnary
        /// </summary>
        public void ClearRes()
        {
            this.res.Clear();
        }
 
    }

C'est surtout la partie fileReader.Treatment(fileList1, fileList2); qui prend du temps. La seule solution que j'ai trouvé c'est de mettre un gif de chargement mais ce n'est pas très précis. Donc si j'utilise le backgroundworker, comment je renvois des données de la méthode Treatment sur la form principale?

**davjan** · 13/12/2010, 16h03

Il y a pour cela la méthode reportProgress. Tu t'abonnes à l'évenement progressChanged du backgroundWorker et tu incrémentes la valeur de ta progressBar dans la fonction On_ProgressChanged.

Barre de progression et MVC

C#

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