public frmMain()
{
InitializeComponent();
#if DEBUG
cbFolder.Text = @"C:\Users\yo\Documents\FileSearch\FileSearch\bin\Debug";
#endif
lstFilePattern.BringToFront();
//Initialize private variables.
_results = new List<string>();
_searchLog = new System.Text.StringBuilder();
_predefinedPatterns = new List<PredefinedPattern>();
_searchFolderHistory = new List<SearchFolderHistory>();
//Load the settings file.
_settings = XElement.Load("settings.txt");
//Parse each pattern and place it in the list box.
foreach (var predefinedPattern in _settings.Element("predefinedPatterns").Elements("predefinedPattern")) {
if (predefinedPattern.Attribute("Id") == null)
predefinedPattern.Add(new XAttribute("Id", Guid.NewGuid().ToString()));
var newPattern = new PredefinedPattern(predefinedPattern);
_predefinedPatterns.Add(newPattern);
lstFilePattern.Items.Add(newPattern);
}
if (_settings.Element("searchFolderHistory") == null) {
//Search folder history node is missing from the settings file.
//Add the node now. No need to save the settings file now.
_settings.Add(new XElement("searchFolderHistory"));
} else {
//Parse each folder and place it in the ComboBox.
foreach (var searchFolder in _settings.Element("searchFolderHistory").Elements("searchFolder")) {
var newFolder = new SearchFolderHistory(searchFolder);
_searchFolderHistory.Add(newFolder);
cbFolder.Items.Add(newFolder);
}
}
//Present program's version.
this.Text += " v" + typeof(frmMain).Assembly.GetName().Version.ToString();
#if DEBUG
this.Text += " BETA";
#endif
}
private void cbFolder_SelectionChangeCommitted(object sender, EventArgs e)
{
_lastSelectedFolder = (SearchFolderHistory)cbFolder.SelectedItem;
}
private void btnRemoveFolder_Click(object sender, EventArgs e)
{
if (_lastSelectedFolder != null) {
//Remove the last selected folder from the settings and from the ComboBox.
cbFolder.Items.Remove(_lastSelectedFolder);
_searchFolderHistory.Remove(_lastSelectedFolder);
//Find the folder in the settings and remove it.
var settingSearch = (from p in _settings.Element("searchFolderHistory").Elements()
where p.Attribute("Id").Value == _lastSelectedFolder.Id
select p);
//Remove the folder using a loop to ensure complete removal,
//taking into account possible duplicates.
foreach (var setting in settingSearch) {
setting.Remove();
}
_settings.Save("settings.txt");
_lastSelectedFolder = null;
}
}
private void btnFind_Click(object sender, EventArgs e)
{
if (_searchThread == null) {
bool isValid = true;
try {
SetSearchMode(true);
if (!System.IO.Directory.Exists(cbFolder.Text)) {
isValid = false;
MessageBox.Show("Folder '" + cbFolder.Text + "' does not exist.");
}
if (txSelectedPattern.Text.Length == 0) {
isValid = false;
MessageBox.Show("Enter or select a pattern to search.");
}
if (isValid) {
var pattern = "(";
var folder = cbFolder.Text;
_searchLog.Clear();
lstResults.Items.Clear();
_results.Clear();
//Check whether to concatenate selected patterns or use a pattern entered directly in the pattern TextBox.
if (lstFilePattern.CheckedItems.Count == 0)
pattern = txSelectedPattern.Text;
else {
foreach (PredefinedPattern item in lstFilePattern.CheckedItems) {
pattern += item.Pattern + "|";
}
pattern = pattern.Substring(0, pattern.Length - 1) + ")";
}
//Check if the search folder is already in the history.
var folderSearch = (from p in _searchFolderHistory
where p.Folder.ToLower() == folder.ToLower()
select p).ToArray();
if (folderSearch.Length == 0) {
//Search folder is new to the history.
//Save the new folder in the settings file.
var newFolder = new SearchFolderHistory(cbFolder.Text);
var newFolderXml = new XElement("searchFolder");
newFolderXml.Add(new XAttribute("Id", newFolder.Id));
newFolderXml.Add(new XAttribute("Folder", newFolder.Folder));
_settings.Element("searchFolderHistory").Add(newFolderXml);
cbFolder.Items.Add(newFolder);
_searchFolderHistory.Add(newFolder);
_settings.Save("settings.txt");
}
//Prepare a background worker to perform the search in the background to prevent the screen
//from locking up during search.
_searchThread = new BackgroundWorker();
_searchThread.WorkerSupportsCancellation = true;
_searchThread.WorkerReportsProgress = true;
_searchThread.DoWork += new DoWorkEventHandler(
delegate(object backgroundSender, DoWorkEventArgs backgroundE) {
//Execute the search.
FindFiles(folder, pattern, chkSearchSubfolders.Checked, backgroundE);
});
_searchThread.ProgressChanged += new ProgressChangedEventHandler(
delegate(object backgroundSender, ProgressChangedEventArgs backgroundE) {
//Update the Label with folder being processed.
lbFilesFound.Text = (string)backgroundE.UserState;
});
_searchThread.RunWorkerCompleted += new RunWorkerCompletedEventHandler(
delegate(object backgroundSender, RunWorkerCompletedEventArgs backgroundE) {
//Show final search status to the user.
if (backgroundE.Cancelled) {
lbFilesFound.Text = "Search cancelled";
_searchLog.AppendLine("Search cancelled");
} else if (_results.Count == 0) {
lbFilesFound.Text = "No files were found.";
_searchLog.AppendLine("Search complete. No files were found.");
} else {
lstResults.Items.AddRange(_results.ToArray());
lbFilesFound.Text = lstResults.Items.Count + " file(s) were found. Right-click on a line to see additional options.";
_searchLog.AppendLine("Search complete. " + lstResults.Items.Count + " file(s) were found.");
}
btnFind.Text = "Find";
SetSearchMode(false);
_searchThread = null;
//Show the search log.
var showSearchLog = new frmSearchLog();
showSearchLog.RefreshLog(_searchLog.ToString());
showSearchLog.ShowDialog();
});
//Execute the search in the background.
_searchThread.RunWorkerAsync();
btnFind.Text = "Cancel";
base.Cursor = Cursors.Default;
} else {
SetSearchMode(false);
lbFilesFound.Text = "Search cancelled";
}
} catch (Exception ex) {
SetSearchMode(false);
btnFind.Text = "Find";
_searchThread = null;
MessageBox.Show("An error occurred processing patterns.\nError message: " + ex.Message);
}
} else {
//The user clicked the Find button while a search is performed.
try {
//Cancel the current search.
_searchThread.CancelAsync();
} catch (Exception ex) {
MessageBox.Show("An error occurred cancelling the search.\nError message: " + ex.Message);
SetSearchMode(false);
}
}
}
