SearchPane.SuggestionsRequested | suggestionsrequested event

function onSuggestionsRequested(eventArgs) { /* Your code */ }
 
// addEventListener syntax
searchPane.addEventListener("suggestionsrequested", onSuggestionsRequested);
searchPane.removeEventListener("suggestionsrequested", onSuggestionsRequested);
 
- or -

searchPane.onsuggestionsrequested = onSuggestionsRequested;

// Register the onsuggestionsrequested event in your apps global scope, for example default.js, so that it is registered as soon as your app is launched.
Windows.ApplicationModel.Search.SearchPane.getForCurrentView().onsuggestionsrequested = function (eventObject) {
    var queryText = eventObject.queryText, suggestionRequest = eventObject.request, linguisticDetails = eventObject.linguisticDetails;

    var queryAlternatives = linguisticDetails.queryTextAlternatives;
    var maxNumberOfSuggestions = 5;
    for (var i = 0, len = queryAlternatives.length, done = false; i < len && !done; i++) {
        // toLowerCase not necessary for East Asian languages. Preserves compatibility when non East Asian suggestions are mixed in with East Asian suggestions.
        var alternative = queryAlternatives[i].toLowerCase();
        for (var j = 0, suggestionLength = suggestionList.length; j < suggestionLength; j++) {
            if (suggestionList[j].substr(0, alternative.length).toLowerCase() === alternative) {
                suggestionRequest.searchSuggestionCollection.appendQuerySuggestion(suggestionList[j]);
                if (suggestionRequest.searchSuggestionCollection.size === maxNumberOfSuggestions) {
                    done = true;
                    break;
                }
            }
        }
    }

    // Construct list of alternatives so we can output them.
    var alternatives = "";
    for (var k = 0, alternativeCount = queryAlternatives.length; k < alternativeCount; k++) {
        alternatives += queryAlternatives[k];
    }
    if (suggestionRequest.searchSuggestionCollection.size > 0) {
        WinJS.log && WinJS.log("Suggestions provided for query: " + queryText + "\nUsing alternatives: " + alternatives, "sample", "status");
    } else {
        WinJS.log && WinJS.log("No suggestions provided for query: " + queryText + "\nUsing alternatives: " + alternatives, "sample", "status");
    }
};

protected override void OnWindowCreated(WindowCreatedEventArgs args)
{
    // At window creation time, access the SearchPane object and register SearchPane events
    // (like QuerySubmitted, SuggestionsRequested, and ResultSuggestionChosen) so that the app
    // can respond to the user's search queries at any time.

    // Get search pane
    Windows.ApplicationModel.Search.SearchPane searchPane = SearchSearchPane.GetForCurrentView();
    
    // Register event handlers for SearchPane events

    // Register QuerySubmitted event handler
    searchPane.QuerySubmitted += new TypedEventHandler<SearchPane, SearchPaneQuerySubmittedEventArgs>(OnQuerySubmitted);
    
    // Register a SuggestionsRequested if your app displays its own suggestions in the search pane (like from a web service)
    searchPane.SuggestionsRequested += new TypedEventHandler<SearchPane, SearchPaneSuggestionsRequestedEventArgs>(OnSuggestionsRequested);

    // Register a ResultSuggestionChosen if your app displays result suggestions in the search pane
}