Rank: Member
Groups: Member
Joined: 5/20/2015
Posts: 11
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Hi,
I just started using EO.WebBrowser, I am using Webforms and c#
(Need to implement googlemaps.api replacing the curent mapping system)
I need to pass some JSON Objects to Javascript to work with.
Used Newtonsoft.Json to create the objects and now am looking to pass em on to the EO.webview containing a javascript-function like so.
////////
public void lookupAddress(string address)
{
string temp = address;
Location loc = coder.GeocodeAddress(temp);
int zoomlevel = coder.calcZoom(loc);
JObject rss =
new JObject(
new JProperty("lat", loc.getLatitude().ToString().Replace(",", ".")),
new JProperty("longt", loc.getLongitude().ToString().Replace(",", ".")),
new JProperty("zoomlevel", zoomlevel),
new JProperty("description", loc.getAddressFull()),
new JProperty("imagepath", crossImagePath));
EO.WebBrowser.JSObject window = EO_WebView.GetDOMWindow();
//Get the JavaScript function
EO.WebBrowser.JSFunction jsAddMarker = (EO.WebBrowser.JSFunction)EO_WebView.EvalScript("RSSAddMarkers");
//Call the function
jsAddMarker.Invoke(window, new Object[] { rss });
}
//////////////////////////
When running the application visual studio gives me the folowing when trying to execute the invoke():
Object '{ .... } of type 'Newtonsoft.Json.Linq.JObject' can not be passed to JavaScript code.
Should I be working with something else to get somekind of JSON-objects through??
I probably missed something, but if anyone could give me some tips on handling this that would be awesome.
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,229
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Hi, You can not pass a .NET object directly into the JavaScript excepts for primative types (theorartically we could automatically convert a .NET object into a JavaScript object under the hood but that would come with a performance penalty). Instead of passing JObject to the JavaScript, you can serialize it into a JSON string and then pass that string into JavaScript. You can then parse it back into JSON object with the EO.WebBrowser's built in JSON support in your JavaScript:
Code: JavaScript
//Parse JSON string back to an object in JavaScript
var jobj = JSON.parse(your_json_string);
Note here JSON is the built-in JSON support provided by the browser engine. This is also much more efficient. Thanks!
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Rank: Member
Groups: Member
Joined: 5/20/2015
Posts: 11
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Works like a charm! Thanks for the help!
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