进度条不起作用!!!

Question

public partial class Form1 : Form {
        private FormProgressbar _frmProgressBar;    //instance of ProgressBar form.
        private delegate bool IncreaseProBarHandler(int val);   //delegate to handler the corresponding.
        private IncreaseProBarHandler _incProBar;   //instance of the handler.
        public Form1() {
            InitializeComponent();
        }
        //Show the ProgressBar form.
        void ProgressBarFormShow() {
            _frmProgressBar = new FormProgressbar();
            _incProBar = _frmProgressBar.IncreaseProbarVal;
            _frmProgressBar.ShowDialog();   //treat the ProgressBar as modal dialog.
        }        //Management the ProgressBar form.
        void MngProgressBarForm() {
            try {
                MethodInvoker proBarFormInvo = ProgressBarFormShow;
                this.BeginInvoke(proBarFormInvo);                Thread.Sleep(100);  //sleep for a while to show the window.                bool bIncProBar = false;    //determine whether increase the ProgressBar successfully.
                do {
                    Thread.Sleep(5);   //sleep a while each time trying to increase the ProgressBar value.
                    bIncProBar = (bool)this.Invoke(_incProBar, new object[] { 2 });
                } while(bIncProBar);
            }
            catch(System.Exception ex) {
                MessageBox.Show(ex.Message);
            }        }
        //Store the selected directory.
        private void btn_OpenFD_Click(object sender, EventArgs e) {
            FolderBrowserDialog folderBD = new FolderBrowserDialog();
            if(folderBD.ShowDialog() == DialogResult.OK)
                comBoxPath.Text = folderBD.SelectedPath;
        }
        //Start to read.
        private void btnRead_Click(object sender, EventArgs e) {
            new Thread(MngProgressBarForm).Start(); //start the ProgressBar Thread.
            ArrayList arrDirs = new ArrayList();    //存储路径列表.
            ArrayList arrFiles = new ArrayList();   //存储文件列表.
            GetFilesList(comBoxPath.Text.Trim(), "*.*", arrDirs, arrFiles, true);
            StringBuilder strBuilder = new StringBuilder(arrDirs.Count + arrFiles.Count);   //拼接文件/文件名.            foreach(var dir in arrDirs) {   //路径.
                strBuilder.Append(dir + "\n");
            }            foreach(var file in arrFiles) { //文件.
                strBuilder.Append(file + "\n");
            }            richTxtShow.Text = Convert.ToString(strBuilder);
            labCountAll.Text = "总共找到\"" + arrDirs.Count + "\"文件夹, \"" + arrFiles.Count + "\" 文件.";
        }        //Get File/Directory List.
        /// <summary>
        /// 读取指定路径下全部"路径/文件"并用列表存储.
        /// </summary>
        /// <param name="strDir">指定读取的路径.</param>
        /// <param name="strFilePattern">读取文件的格式.</param>
        /// <param name="arrDirs">存储路径的ArrayList.</param>
        /// <param name="arrFiles">存储文件的ArrayList.</param>
        /// <param name="bIsRecursive">是否递归读取.</param>
        private void GetFilesList(string strDir, string strFilePattern, System.Collections.ArrayList arrDirs, System.Collections.ArrayList arrFiles, bool bIsRecursive) {
            //None directory.
            if(string.IsNullOrEmpty(strDir)) throw new ArgumentNullException("Directory");
            try {
                DirectoryInfo dir = new DirectoryInfo(strDir);
                string result = ""; //存储与查找文件/文件名相符的文件名/路径名.
                //Directory.
                string[] directorys = Directory.GetDirectories(strDir);
                DirectoryInfo[] directorys = 
                foreach(var dir in directorys) {
                    result = Path.GetFileNameWithoutExtension((string)dir).ToLower();
                    if(result.Contains((string)txtFileSearch.Text.ToLower().Trim()))
                        arrDirs.Add(dir);
                }
                //File.
                string[] files = Directory.GetFiles(strDir, strFilePattern);
                foreach(var f in files) {
                    result = Path.GetFileNameWithoutExtension((string)f).ToLower();
                    if(result.Contains((string)txtFileSearch.Text.ToLower().Trim()))
                        arrFiles.Add(f);
                }                //Recursive.
                if(bIsRecursive) {
                    foreach(var dir in directorys) {
                        GetFilesList(dir, strFilePattern, arrDirs, arrFiles, true);
                    }
                }
            }
            catch(System.Exception ex) {
                richTxtShow.Text = ex.Message;
            }
        }        private void Form1_Load(object sender, EventArgs e) {
            comBoxPath.SelectedIndex = 0;   //初始选项路径.
        }
    }//我用这个方法(添加进度条)做(拷贝文件或文件夹)的时候都没有问题...这里为什么不行

Answer 1

//补充:
//the method in the ProgressBar Form:
/// <summary>
        /// increase the progressbar value.
        /// </summary>
        /// <param name="val">the val to increase each time.</param>
        /// <returns>true if it increase successfully;otherwise false.</returns>
        public bool IncreaseProbarVal(int val) {
            if(probar.Value + val < probar.Maximum) {
                probar.Value += val;
                return true;
            }
            else {
                probar.Value = probar.Maximum;
                return false;
            }
        }

Answer 2

//大神们...帮我想一下...为什么我延迟线程的暂停时间后就可以...
//Management the ProgressBar form.
        void MngProgressBarForm() {
            try {
                MethodInvoker proBarFormInvo = ProgressBarFormShow;
                this.BeginInvoke(proBarFormInvo);
 
                Thread.Sleep(100);  //sleep for a while to show the window.
 
                bool bIncProBar = false;    //determine whether increase the ProgressBar successfully.
                do {
                    Thread.Sleep(5);   //sleep a while each time trying to increase the ProgressBar value.
                    bIncProBar = (bool)this.Invoke(_incProBar, new object[] { 2 });
                } while(bIncProBar);
            }
            catch(System.Exception ex) {
                MessageBox.Show(ex.Message);
            }
 
        }

Answer 3

//也就是说,我这句Thread.Sleep(100);  //sleep for a while to show the window.改成Thread.Sleep(1000);就可以了...

Answer 4

晕...都没有人看懂我要问的?
我问的不难吧...只是我为了大家方便,全上了代码而已...
我现在主要是搞不懂, Thread.Sleep 中,阻塞是是主线程还是子线程....搞懂这个就没有问题了...