Operation

Changes In

Code Sample

Invoking a function

Xbap

dynamic script = BrowserInteropHelper.HostScript;

              script.ReportProgress(progressValue.ToString());

Passing an object to a function

Script

function ReportDate(dateTime) {

    date = new Date(dateTime);

    var dateBox = document.getElementById("displayDate");

    dateBox.value = date.getFullYear();

}

Xbap

DateTime date1 = (DateTime)date.SelectedDate;

script.ReportDate(date1);

Fetching custom data from the script

Script

function ComplexData() {

    var res = { FirstName: "John", LastName:"Foo", Age:20 };

    return res;

}

Xbap

var result = script.ComplexData();

var resultName = result.FirstName;

var resultAge = result.Age;

tbData.Text = "FirstName: " + resultName + " Age: " + resultAge;

Fetch Function from the script

Script

function ReturnFunction() {

    return TestAdd;

}

function TestAdd(arg1, arg2) {

    return arg1 + arg2;

}

Xbap

var AddFunction = script.ReturnFunction();

var value = AddFunction.call(null, 5, 6);

tbData1.Text = "Total: " + value;

Setting up a default callback

Script

function SetClickHandler(handler) {

    btn1.onclick = handler;

}

Xbap

OnClickHandler handler1 = new OnClickHandler();                   

script.SetClickHandler(handler1);

[ComVisible(true)]

    public class OnClickHandler

    {

        [DispId(0)] // This makes it the object’s default member.

        public void Invoke()

        {

            MessageBox.Show("Default Invoke");

        }

}

Setting up a custom callback

Script

var XBAPCallback;

function SetCallback(callbackObj) {

    XBAPCallback = callbackObj;

    btn2.onclick = OnViewReportButtonClick;

}

function OnViewReportButtonClick() {

    date = new Date();

    XBAPCallback.Callback(date.getFullYear());

}

Xbap

OnClickHandler handler = new OnClickHandler();

handler.mainViewModel = this.DataContext;

script.SetCallback(handler);

[ComVisible(true)]

    public class OnClickHandler

    {

        public object mainViewModel;

         public void Callback(object arg)

        {

            ((MainViewModel)mainViewModel).MyText = "CallBack:" + arg.ToString();

        }

    };