private void DoAdvancedSearch()
{
// This is our final searchcondition that we'll create the search folder from
SearchCondition finalSearchCondition = null;
// This is Prop1 + prop2 search condition... if the user didn't specify one of the properties,
// we can just use the one property/value they specify...if they do, then we can do the and/or operation
SearchCondition combinedPropSearchCondition = null;
// Because we are doing the search on a background thread,
// we can't access the UI controls from that thread.
// Invoke from the main UI thread and get the values
string prop1TextBox_Text = string.Empty;
string prop2TextBox_Text = string.Empty;
string prop1ComboBox_Value = string.Empty;
string prop2ComboBox_Value = string.Empty;
SearchConditionOperation prop1ConditionOperation = SearchConditionOperation.ValueContains;
SearchConditionOperation prop2ConditionOperation = SearchConditionOperation.ValueContains;
string prop1prop2OperationComboBox_Value = string.Empty;
string comboBoxDateCreated_Value = string.Empty;
int prop1prop2OperationComboBox_SelectedIndex = 0;
bool dateSelected = false;
List<ShellContainer> scopes = new List<ShellContainer>();
Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Normal, new Action(
delegate()
{
prop1TextBox_Text = prop1TextBox.Text;
prop1TextBox_Text = prop1TextBox.Text;
prop1ComboBox_Value = prop1ComboBox.SelectedItem.ToString();
prop2ComboBox_Value = prop2ComboBox.SelectedItem.ToString();
prop1ConditionOperation = GetConditionOperation(prop1OperationComboBox);
prop2ConditionOperation = GetConditionOperation(prop2OperationComboBox);
prop1prop2OperationComboBox_Value = prop1prop2OperationComboBox.SelectedItem.ToString();
prop1prop2OperationComboBox_SelectedIndex = prop1prop2OperationComboBox.SelectedIndex;
comboBoxDateCreated_Value = comboBoxDateCreated.SelectedItem.ToString();
dateSelected = (comboBoxDateCreated.SelectedItem != dateCreatedNone);
foreach (StackPanel sp in locationsListBox.Items)
{
if (sp.Tag is ShellContainer)
scopes.Add((ShellContainer)sp.Tag);
}
}));
// If we have a valid first property/value, then create a search condition
if (!string.IsNullOrEmpty(prop1TextBox_Text))
{
SearchCondition prop1Condition = SearchConditionFactory.CreateLeafCondition(
GetSearchProperty(prop1ComboBox_Value),
prop1TextBox_Text,
prop1ConditionOperation);
// After creating the first condition, see if we need to create a second leaf condition
if (prop1prop2OperationComboBox_SelectedIndex != 0 &&
!(string.IsNullOrEmpty(prop2TextBox_Text)))
{
SearchCondition prop2Condition = SearchConditionFactory.CreateLeafCondition(
GetSearchProperty(prop2ComboBox_Value),
prop2TextBox_Text,
prop2ConditionOperation);
// Create our combined search condition AND or OR
if (prop1prop2OperationComboBox.SelectedIndex == 1)
combinedPropSearchCondition = SearchConditionFactory.CreateAndOrCondition(
SearchConditionType.And,
false, prop1Condition, prop2Condition);
else
combinedPropSearchCondition = SearchConditionFactory.CreateAndOrCondition(
SearchConditionType.Or,
false, prop1Condition, prop2Condition);
}
else
combinedPropSearchCondition = prop1Condition;
}
else
return; // no search text entered
// Get the date condition
if (dateSelected)
{
SearchCondition dateCreatedCondition = SearchConditionFactory.CreateLeafCondition(
SystemProperties.System.DateCreated,
ParseDate(((ComboBoxItem)comboBoxDateCreated.SelectedItem).Tag.ToString(), DateTime.Now),
SearchConditionOperation.GreaterThan);
// If we have a property based search condition, create an "AND" search condition from these 2
if (combinedPropSearchCondition != null)
finalSearchCondition = SearchConditionFactory.CreateAndOrCondition(SearchConditionType.And,
false, combinedPropSearchCondition, dateCreatedCondition);
else
finalSearchCondition = dateCreatedCondition;
}
else
finalSearchCondition = combinedPropSearchCondition;
ShellSearchFolder searchFolder = new ShellSearchFolder(finalSearchCondition, scopes.ToArray());
//
List<SearchItem> items = new List<SearchItem>();
try
{
// Because we cannot pass ShellObject or IShellItem (native interface)
// across multiple threads, creating a helper object and copying the data we need from the ShellObject
foreach (ShellObject so in searchFolder)
{
// For each of our ShellObject,
// create a SearchItem object
// We will bind these items to the ListView
SearchItem item = new SearchItem();
item.Name = so.Name;
// We must freeze the ImageSource before passing across threads
BitmapSource thumbnail = so.Thumbnail.MediumBitmapSource;
thumbnail.Freeze();
item.Thumbnail = thumbnail;
item.Authors = so.Properties.System.Author.Value;
item.Title = so.Properties.System.Title.Value;
item.Keywords = so.Properties.System.Keywords.Value;
item.Copyright = so.Properties.System.Copyright.Value;
item.TotalPages = so.Properties.System.Document.PageCount.Value.HasValue ? so.Properties.System.Document.PageCount.Value.Value : 0;
item.Rating = so.Properties.System.SimpleRating.Value.HasValue ? (int)so.Properties.System.SimpleRating.Value.Value : 0;
item.ParsingName = so.ParsingName;
items.Add(item);
}
// Invoke the search on the main thread
Dispatcher.Invoke(
System.Windows.Threading.DispatcherPriority.Normal,
new Action(
delegate()
{
MainWindow.UpdateSearchItems(items);
}
));
}
finally
{
// TODO - dispose other
finalSearchCondition.Dispose();
finalSearchCondition = null;
searchFolder.Dispose();
searchFolder = null;
}
}
// Helper method to do the search on a background thread
internal void DoSimpleSearch(object arg)
{
string text = arg as string;
// Specify a culture for our query.
CultureInfo cultureInfo = new CultureInfo("en-US");
SearchCondition searchCondition = SearchConditionFactory.ParseStructuredQuery(text, cultureInfo);
// Create a new search folder by setting our search condition and search scope
// KnownFolders.SearchHome - This is the same scope used by Windows search
searchFolder = new ShellSearchFolder(
searchCondition,
selectedScope);
List<SearchItem> items = new List<SearchItem>();
try
{
// Because we cannot pass ShellObject or IShellItem (native interface)
// across multiple threads, creating a helper object and copying the data we need from the ShellObject
foreach (ShellObject so in searchFolder)
{
// For each of our ShellObject,
// create a SearchItem object
// We will bind these items to the ListView
SearchItem item = new SearchItem();
item.Name = so.Name;
// We must freeze the ImageSource before passing across threads
BitmapSource thumbnail = so.Thumbnail.MediumBitmapSource;
thumbnail.Freeze();
item.Thumbnail = thumbnail;
item.Authors = so.Properties.System.Author.Value;
item.Title = so.Properties.System.Title.Value;
item.Keywords = so.Properties.System.Keywords.Value;
item.Copyright = so.Properties.System.Copyright.Value;
item.TotalPages = so.Properties.System.Document.PageCount.Value.HasValue ? so.Properties.System.Document.PageCount.Value.Value : 0;
item.Rating = so.Properties.System.SimpleRating.Value.HasValue ? (int)so.Properties.System.SimpleRating.Value.Value : 0;
item.ParsingName = so.ParsingName;
items.Add(item);
}
// Invoke the search on the main thread
Dispatcher.Invoke(
System.Windows.Threading.DispatcherPriority.Normal,
new Action(
delegate()
{
UpdateSearchItems(items);
}
));
}
catch
{
searchFolder.Dispose();
searchFolder = null;
}
}