通过在 HTML 页面上单击的按钮呼叫 C# function

Question

My application (C#) consists of an embedded web browser which will load a page in HTML from a server. The HTML page will be created from scratch for this particular application. My intention is to have the following procedure:

• A user opens the application
• A web browser embedded within the application will load an HTML page
• User will click a button on the HTML page
• A C# function (on client side) is triggered from this action
• function does some work
• send a list of data back to the web page
• Web page will retrieve this data and display it
• user's browser will be refreshed to display the new page

Now my questions are the following:

• How can a C# function on the client side be triggered when a button is clicked on a server page

• What is the best way to transfer data (will probably be object)

• how can a function on the HTML page wait for data to be received before continuing to execute the function?

Answer 1

Using the WebBrowser control, you can use the ObjectForScripting property. This will allow JavaScript to call C# code using window.external. C# MethodName

There's some quirks with the serialization you might need to work through, and you might need to use webbrowser .Document.InvokeScript to trigger your data back to JavaScript (I've not personally used the result of a window.external call so cannot speak for it).