Search output to a textbox with suggestion.. can't get it to work properly

Question

I've a textbox.

<TextBox   Name="outbox" Width="300" Height="20" Text="{Binding constantvalue}"/>

In the .cs file, I've got the following to suggest in search charms.

public sealed partial class mainconstantspage : constants.Common.LayoutAwarePage
    {
        private SearchPane searchPane;

        private static readonly string[] suggestionList =
            {
                
                "Absolute Zero", );        

              }


public mainconstantspage()
        {
            this.InitializeComponent();
            searchPane = SearchPane.GetForCurrentView();
            
        }


        private void OnSearchPaneSuggestionsRequested(SearchPane sender, SearchPaneSuggestionsRequestedEventArgs e)
        {

            

            var queryText = e.QueryText;

            var request = e.Request;
           

            foreach (string suggestion in suggestionList)
            {


                if (suggestion.StartsWith(queryText, StringComparison.CurrentCultureIgnoreCase))
                {
                    // Add suggestion to Search Pane
                    request.SearchSuggestionCollection.AppendQuerySuggestion(suggestion);



                }
            }






        }



protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            var queryText = navigationParameter as String;

                        

            if (queryText == "Absolute Zero") this.DefaultViewModel["constantvalue"] = "-273.15 °C";

.................

}

protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            
            searchPane.SuggestionsRequested += new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            searchPane.SuggestionsRequested -= new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
        }

 

If I leave it as is, the suggestion works perfectly, but every time I press enter there's no result in the textbox.  But if I comment out the OnNavigateTo block, then the suggestion does not work but the output in the textbox works perfectly. 

How do I make it so both will work?

 

 

Answer 1

Please help anyone?

Answer 2

but every time I press enter there's no result in the textbox.

Do you mean the query text entered in search charm is cleared off and you want to persist that?

---

- Ram
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful".

Answer 3

Hi huge ,

Welcome to MSDN forum!

While you press enter, the event  SearchPane.QuerySubmitted | querysubmitted event is fired.

So, you could change the OutText data here instead. Also you could do it like below MSDN sample.

 private void OnSearchPaneSuggestionsRequested(SearchPane sender, SearchPaneSuggestionsRequestedEventArgs e)
        {
            var queryText = e.QueryText;
            if (string.IsNullOrEmpty(queryText))
            {
                MainPage.Current.NotifyUser("Use the search pane to submit a query", NotifyType.StatusMessage);
            }
            else
            {
                var request = e.Request;
                foreach (string suggestion in suggestionList)
                {
                    if (suggestion.StartsWith(queryText, StringComparison.CurrentCultureIgnoreCase))
                    {
                        // Add suggestion to Search Pane
                        request.SearchSuggestionCollection.AppendQuerySuggestion(suggestion);

                        // Break since the Search Pane can show at most 5 suggestions
                        if (request.SearchSuggestionCollection.Size >= MainPage.SearchPaneMaxSuggestions)
                        {
                            break;
                        }
                    }
                }

                if (request.SearchSuggestionCollection.Size > 0)
                {
                    MainPage.Current.NotifyUser("Suggestions provided for query: " + queryText, NotifyType.StatusMessage);
                }
                else
                {
                    MainPage.Current.NotifyUser("No suggestions provided for query: " + queryText, NotifyType.StatusMessage);
                }
            }
        }

And the NotifyUser function defined like this:

 public void NotifyUser(string strMessage, NotifyType type)
        {
            switch (type)
            {
                // Use the status message style.
                case NotifyType.StatusMessage:
                    StatusBlock.Style = Resources["StatusStyle"] as Style;
                    break;
                // Use the error message style.
                case NotifyType.ErrorMessage:
                    StatusBlock.Style = Resources["ErrorStyle"] as Style;
                    break;
            }
            StatusBlock.Text = strMessage;

            // Collapse the StatusBlock if it has no text to conserve real estate.
            if (StatusBlock.Text != String.Empty)
            {
                StatusBlock.Visibility = Windows.UI.Xaml.Visibility.Visible;
            }
            else
            {
                StatusBlock.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
            }
        }

Best Regard!

Answer 4

Forgive me.  You misunderstood what I meant.

I have a textbox in the xaml page. 

 <TextBox   Name="outbox"  Text="{Binding constantvalue}" Style="{StaticResource inout}" Margin="0,30,0,0"/>

In the .cs page, I have the following code to do suggestion.

private void OnSearchPaneSuggestionsRequested(SearchPane sender, SearchPaneSuggestionsRequestedEventArgs e)
        {

            

            var queryText = e.QueryText;

            var request = e.Request;
           

            foreach (string suggestion in suggestionList)
            {


                if (suggestion.StartsWith(queryText, StringComparison.CurrentCultureIgnoreCase))
                {
                    // Add suggestion to Search Pane
                    request.SearchSuggestionCollection.AppendQuerySuggestion(suggestion);

                }
            }

        }

It's pretty much what you suggested edited for my purposes.

Here are some codes that goes back to the outbox in the xaml page.

protected override  void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            
            var queryText = navigationParameter as String;

            // Communicate results through the view model

            if (queryText == "Absolute Zero") outbox.Text = "-273.15 °C";

......................

So, with everything above, when I type in "Absolute Zero" and press enter, in the textbox "outbox" appears "-273.15 °C".  But the suggestion doesn't work.  In other words, when I start typing Absolute Zero, it doesn't suggest it.

In order for suggestion to work, I have to have the following codes.

protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            
            searchPane.SuggestionsRequested += new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = true;
            await LoadTrialModeProxyFileAsync();
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            searchPane.SuggestionsRequested -= new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = false;

            if (licenseChangeHandler != null)
            {
                CurrentAppSimulator.LicenseInformation.LicenseChanged -= licenseChangeHandler;
            }
            


        }

With the codes right above, suggestion works perfectly.  But when I press enter or choose the suggestion nothing happens in the textbox "outbox" in the xaml page. 

Answer 5

but every time I press enter there's no result in the textbox.

Do you mean the query text entered in search charm is cleared off and you want to persist that?

---

- Ram
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful".

No.  There is a textbox in the xaml page called "outbox".

<TextBox   Name="outbox"  Text="{Binding constantvalue}" Style="{StaticResource inout}" Margin="0,30,0,0"/>

The following code will output a number when I do a search.

protected override  void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            
            var queryText = navigationParameter as String;

            // Communicate results through the view model

            if (queryText == "Absolute Zero") outbox.Text = "-273.15 °C";

.....................

Just having those 2 blocks of codes and the appropriate code in the App.xaml.cs

protected async override void OnSearchActivated(Windows.ApplicationModel.Activation.SearchActivatedEventArgs args)
        {
            // TODO: Register the Windows.ApplicationModel.Search.SearchPane.GetForCurrentView().QuerySubmitted
            // event in OnWindowCreated to speed up searches once the application is already running

            // If the Window isn't already using Frame navigation, insert our own Frame
            var previousContent = Window.Current.Content;
            var frame = previousContent as Frame;

            // If the app does not contain a top-level frame, it is possible that this 
            // is the initial launch of the app. Typically this method and OnLaunched 
            // in App.xaml.cs can call a common method.
            if (frame == null)
            {
                // Create a Frame to act as the navigation context and associate it with
                // a SuspensionManager key
                frame = new Frame();
                constants.Common.SuspensionManager.RegisterFrame(frame, "AppFrame");

                if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    // Restore the saved session state only when appropriate
                    try
                    {
                        await constants.Common.SuspensionManager.RestoreAsync();
                    }
                    catch (constants.Common.SuspensionManagerException)
                    {
                        //Something went wrong restoring state.
                        //Assume there is no state and continue
                    }
                }
            }

            frame.Navigate(typeof(mainconstantspage), args.QueryText);

            
            
            Window.Current.Content = frame;

            // Ensure the current window is active
            Window.Current.Activate();
        }

As you can see, I have the search result pass the QueryText to the loadstate in mainconstantspage.  So, when I have just the above codes, everytime I type in "Absolute Zero" in the textbox 'outbox' should appear the number "-273.15 °C". 

But no search suggestion.  So, the following code blocks are for search suggestion.  But when I put it in when I press enter nothing happens in the textbox "outbox".  Suggestion works, though.

private void OnSearchPaneSuggestionsRequested(SearchPane sender, SearchPaneSuggestionsRequestedEventArgs e)
        {

            

            var queryText = e.QueryText;

            var request = e.Request;
           

            foreach (string suggestion in suggestionList)
            {


                if (suggestion.StartsWith(queryText, StringComparison.CurrentCultureIgnoreCase))
                {
                    // Add suggestion to Search Pane
                    request.SearchSuggestionCollection.AppendQuerySuggestion(suggestion);

                }
            }

        }


protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            
            searchPane.SuggestionsRequested += new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = true;
            await LoadTrialModeProxyFileAsync();
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            searchPane.SuggestionsRequested -= new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = false;

            if (licenseChangeHandler != null)
            {
                CurrentAppSimulator.LicenseInformation.LicenseChanged -= licenseChangeHandler;
            }
            


        }

If I take out OnNavigateTo and OnNavigateFrom, then suggestion does not work but output to the textbox "outbox" works.  How do I have both?

I've tried to explain in 2 different ways.  Hopefully, you will understand me this time. 

Answer 6

You should work with the QuerySubmitted event handler instead of LoadState.

Here is your Navigation Handlers:

protected override async void OnNavigatedTo(NavigationEventArgs e)
        {

            SearchPane.GetForCurrentView().SuggestionsRequested += new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().QuerySubmitted+=OnQuerySubmitted;
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = true;
            await LoadTrialModeProxyFileAsync();
        }

protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            SearchPane.GetForCurrentView().SuggestionsRequested -= new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSearchPaneSuggestionsRequested);
            SearchPane.GetForCurrentView().ShowOnKeyboardInput = false;
            SearchPane.GetForCurrentView().QuerySubmitted -= OnQuerySubmitted;
            if (licenseChangeHandler != null)
            {
                CurrentAppSimulator.LicenseInformation.LicenseChanged -= licenseChangeHandler;
            }
        }

Here is your QuerySubmitted event handler:

private void OnQuerySubmitted(SearchPane sender, SearchPaneQuerySubmittedEventArgs args)
        {
            var queryText = args.QueryText;

            // Communicate results through the view model

            if (queryText == "Absolute Zero") outbox.Text = "-273.15 °C";
        }

---

- Ram
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful".

Answer 7

That worked perfectly.  Thank you.