private void SearchBackgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
SearchUserState progress = (SearchUserState)e.UserState;
ShowProgress(progress.results);
progress.extension = (String)this.extensionComboBox.GetItemText(this.extensionComboBox.SelectedItem);
}
private void Search(String extension)
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
// Initial results is empty list
FileInfo[] searchResults = new FileInfo[] { };
// Report initial progress
this.SearchBackgroundWorker.ReportProgress(0, state = new SearchUserState(searchResults, extension));
Debug.WriteLine(state.extension);
foreach (String drive in Directory.GetLogicalDrives())
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
Debug.WriteLine(drive);
foreach (DirectoryInfo child in getDirectories(drive))
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
Debug.WriteLine(child.FullName);
FindFiles(child, state.extension);
}
}
}
private void FindFiles(DirectoryInfo dir, string selectedItem)
{
try
{
if (this.backgroundWorker.CancellationPending)
{
return;
}
DirectoryInfo[] children = getDirectories(dir);
if (children.Length > 0)
{
foreach (DirectoryInfo child in children)
{
Debug.WriteLine(child.FullName);
FindFiles(child, selectedItem);
}
}
else
{
if (selectedItem == ".txt")
{
FileInfo[] Files = dir.GetFiles("*.txt");
if (Files.Length > 0)
{
//Found some text files.
//Do something
//Report progress
fileCount++;
SearchUserState state = new SearchUserState(Files);
this.backgroundWorker.ReportProgress(0, state);
}
}
else if (selectedItem == ".html")
{
FileInfo[] Files = dir.GetFiles("*.html");
if (Files.Length > 0)
{
//Found some html files.
//Do something
//Report progress
fileCount++;
SearchUserState state = new SearchUserState(Files);
this.backgroundWorker.ReportProgress(0, state);
}
}
else if (selectedItem == ".htm")
{
FileInfo[] Files = dir.GetFiles("*.htm");
if (Files.Length > 0)
{
//Found some htm files.
//Do something
//Report progress
fileCount++;
SearchUserState state = new SearchUserState(Files);
this.backgroundWorker.ReportProgress(0, state);
}
}
while (pause)
{
Thread.Sleep(1);
if (this.backgroundWorker.CancellationPending)
{
return;
}
}
}
}
catch (Exception ex)
{
System.Console.WriteLine(ex.Message);
}
}
private void FindFiles(DirectoryInfo dir, String extension)
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
try
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
DirectoryInfo[] children = getDirectories(dir);
if (children.Length > 0)
{
foreach (DirectoryInfo child in children)
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
Debug.WriteLine(child.FullName);
Debug.WriteLine(extension);
FindFiles(child, extension);
}
}
else
{
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
FileInfo[] Files = dir.GetFiles(extension);
if (Files.Length > 0)
{
//Found some files with the given extension
this.SearchBackgroundWorker.ReportProgress(0, state = new SearchUserState(Files, state.extension));
pauseEvent.WaitOne();
Debug.WriteLine(state.extension);
// Check for cancellation
if (this.SearchBackgroundWorker.CancellationPending)
{
return;
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
SearchUserState progress = (SearchUserState)e.UserState;
ShowProgress(progress.Files); //passing data back to ui
}
