[SOLVED] Get the return value of the javascript function embedded in the widget control

Hi Takao,

Yes it is!

Set up your JavaScript like this (Note: if you put a function getData() { } declaration in the initScript it will run as soon as the app launches, that’s why we use this.getData):

this.getData = function() {

       return true | false;

}

On the C# side:

private async void button5_Click(object sender, EventArgs e)

{

        var result = await this.widget1.CallAsync("this.getData");

        AlertBox.Show(result.ToString());

}

You can also add the [WebMethod] attribute to any function in C# and call that from JavaScript!  Web methods are exposed automatically on top-level controls (Desktop, Page, Form) and in the main application static class (Program).

For Example:

JavaScript Side:

this.hello = function() {

        App.HelloWorld();
}

C# Side:

[WebMethod]

public void HelloWorld() {

        AlertBox.Show("Hello, World!");
}

Check out these documents for more information and detail:

https://wisej.com/docs/2.0/html/JavaScript.htm

https://wisej.com/docs/2.1/html/JavaScriptObjectModel.htm

https://wisej.com/docs/2.0/html/T_Wisej_Web_Widget.htm (Call / Eval)

https://wisej.com/support/question/how-can-i-send-a-message-from-javascript-to-c

Best,

Levie