Programatically press a button in a website from an app in a phone

Question

I am creating a UWP app using c#. The app is supposed to fetch information from a website and present it to the user. I\'ve went through the DOM of the site and managed to downl

Answer 1

Here is an example for Entering text in search box and Click search button in Bing

1. Use WebView to do all the work

   WebView webView = new WebView();
   

2. Use InvokeScriptAsync method for WebView to use JS code

   webView.InvokeScriptAsync("eval", new string[] {});
   

3. Get the HTML of the site using below code

   public LoadURI()
   {
       webView.Navigate(new Uri("https://www.bing.com/"));
       webView.NavigationCompleted += webView_NavigationCompletedAsync;
   }
   
   string siteHtML = null;
   
   private async void webView_NavigationCompletedAsync(WebView sender, WebViewNavigationCompletedEventArgs args)
   {
       siteHtML = await webView.InvokeScriptAsync("eval", new string[] { "document.documentElement.outerHTML;" });
   }
   

4. Enter text in search box using below code

   private async void EnterTextAsync(string enterText)
   {
       var functionString = string.Format(@"document.getElementsByClassName('b_searchbox')[0].innerText = '{0}';", enterText);
       await webView.InvokeScriptAsync("eval", new string[] { functionString });
   }
   

5. Simulate click using below code

   private async void SimulateClickAsync()
   {
       var functionString = string.Format(@"ddocument.getElementsByClassName('b_searchboxSubmit')[0].click();");
       await webView.InvokeScriptAsync("eval", new string[] { functionString });
   }
   

6. Get new site's HTML using Step 3

Here is a Sample app for LogIn to StackOverflow: StackOverFlow-LogIn