Trouble getting data from .net Maui WebView using EvaluateJavascriptAsync

Question

.Net 8 Maui App, running/debugging on Mac OS.

What I am trying to do:

I am trying to get data from a web view’s local storage. I am expecting serialized json to be returned by localStorage.getItem(‘dps’) but instead when trying to get the string data after performing a ToString() on the NSObject what it gives me is 0円0円....

Steps to reproduce:

xaml markup

<WebView x:Name="webview" HeightRequest="300" WidthRequest="500" Source="https://app.hosted.onprem">
</WebView> 

button to initiate retrieval of data from localStorage

<Button x:Name="btnLoggedIn" WidthRequest="150" Clicked="btnLoggedIn_Clicked" Text="Validate" />

code behind

private async void btnLoggedIn_Clicked(object sender, EventArgs e)
{
 try
 {
 /*
 //Tried to use generic approach of:
 //webview.EvaluateJavaScriptAsync("localStorage.getItem('dps');");
 //which always returned null.
 */
 var macosResults = await (webview.Handler.PlatformView as WebKit.WKWebView).EvaluateJavaScriptAsync("localStorage.getItem('dps');");
 var stringResults = macosResults.ToString();
 }
 catch (Exception ex)
 {
 
 }
}

If I inspect the NSObject in the debugger I see the value I need and can copy it from there but if I try assigning the value programmatically, it is garbage, 0円0円...

results

What am I missing/doing wrong?

I am ensuring that I am properly waiting for the call to complete and have verified the data exists in local storage and can see it and access it in the debugger.

• Stephen Quan: Have you tried converting the object to string before sending it, e.g. EvaluateJavaScriptAsync("JSON.stringify(localStorage.getItem('dps'));") ?