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シータム内の何らかのファイルを検索する小さなプログラムを作成し、検索が完了したらリストビューで結果を表示しますこのプログラムは私のフォームがフリーズして何もできません。C＃を使用してシステム全体のファイルを検索するためのプログラムを実行するときにUIがフリーズする
誰かが下に、問題を解決しようとする際に助けてください、私はあなたがFindFiles機能で、かなり重いrecursive処理を行っている
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading.Tasks;
using System.IO;
using System.Threading;
using System.IO.Compression;
using System.Security.AccessControl;
namespace SearchAndZipUtility
{
public partial class MainForm : Form
{
private string _destFolder;
private string _sourceToSearch = @"E:\New Books";
private TaskScheduler schedular = TaskScheduler.Current;
private CancellationTokenSource _ct = new CancellationTokenSource();
private List<string> files = new List<string>();
private string _selectedFileType;
public MainForm()
{
InitializeComponent();
toolStripStatusInfo.Visible = false;
btnZip.Enabled = false;
}
protected override void OnLoad(EventArgs e)
{
// bind file types to combo box
PopulateComboList();
if (cmbFileTypes.Items.Count > 0)
{
cmbFileTypes.SelectedIndex = 0;
}
}
private void PopulateComboList()
{
cmbFileTypes.Items.AddRange(FileTypes.GetFileTypes());
}
private void btnDest_Click(object sender, EventArgs e)
{
DialogResult dr = folderBrowserDialog.ShowDialog();
if (dr == System.Windows.Forms.DialogResult.OK)
{
_destFolder = folderBrowserDialog.SelectedPath;
txtDestFolder.Text = _destFolder;
}
}
private void btnStartSearch_Click(object sender, EventArgs e)
{
toolStripStatusInfo.Visible = true;
btnStartSearch.Enabled = false;
fileListView.Items.Clear();
fileListView.Refresh();
_selectedFileType = cmbFileTypes.SelectedItem.ToString();
List<Task> taskList = new List<Task>();
DriveInfo[] drives = DriveInfo.GetDrives().Where(drive => drive.DriveType == DriveType.Fixed).ToArray();
try
{
foreach (DriveInfo d in drives)
{
DriveInfo dInfo = d;
//Task searchTask = Task.Factory.StartNew(() => { Fi}, _ct.Token, TaskCreationOptions.LongRunning, TaskScheduler.FromCurrentSynchronizationContext());
Task searchTask = Task.Factory.StartNew(() => { FindFiles(dInfo.RootDirectory, ref files); }
, _ct.Token, TaskCreationOptions.LongRunning
, TaskScheduler.FromCurrentSynchronizationContext());
System.Diagnostics.Trace.WriteLine("currently reading" + d.RootDirectory.FullName);
taskList.Add(searchTask);
searchTask.ContinueWith(PopulateResultList, TaskScheduler.FromCurrentSynchronizationContext());
}
Task.Factory.ContinueWhenAll(taskList.ToArray(), OnSearchCompleted, _ct.Token, TaskContinuationOptions.None, TaskScheduler.FromCurrentSynchronizationContext());
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
finally
{
}
}
private void OnSearchCompleted(Task[] tasks)
{
// hide notifier label
toolStripStatusInfo.Visible = false;
btnStartSearch.Enabled = true;
btnZip.Enabled = true;
toolStripStatusLabel.Text = string.Format("Total files found: {0}", files.Count);
}
private List<string> SearchFiles()
{
// DirectoryInfo dirSource = new DirectoryInfo(_sourceToSearch);
_selectedFileType = cmbFileTypes.SelectedItem.ToString();
return files;
}
private void FindFiles(DirectoryInfo directoryInfo, ref List<string> files)
{
FileSystemAccessRule rule = new FileSystemAccessRule(System.Security.Principal.WindowsIdentity.GetCurrent().Name, FileSystemRights.FullControl, System.Security.AccessControl.AccessControlType.Allow);
try
{
foreach (DirectoryInfo d in directoryInfo.GetDirectories())
{
//d.GetAccessControl().ResetAccessRule(rule);
System.Diagnostics.Trace.WriteLine("currently reading> " + d.FullName);
FindFiles(d, ref files);
}
files.AddRange(directoryInfo.GetFiles(string.Format("*.{0}", _selectedFileType), SearchOption.AllDirectories).Select(finfo => finfo.FullName));
}
catch (UnauthorizedAccessException excep)
{
System.Diagnostics.Trace.WriteLine(excep.Message);
}
catch (Exception e)
{
return; // MessageBox.Show(e.Message);
}
}
private void PopulateResultList(Task searchedTask)
{
// fill up list view
fileListView.Items.AddRange(files.Select(fileName => new ListViewItem { Checked = true, Text = fileName }).ToArray());
toolStripStatusLabel.Text = string.Format("Total files found so far: {0}", files.Count);
}
private void btnZip_Click(object sender, EventArgs e)
{
}
}
}
注： 'try/catch 'ブロックに' finally'ブロックを追加する必要はありません。空の 'finally {}'ブロックと 'finally {return; }メソッドの最後には何もしません。 –
はWPFまたはWinフォームと思いますか？私はそれに応じてサンプルを更新します –
私はWinFormsを使用しています... –