CODEWITHSUNDEEP
javascriptc#cefsharp
abiday
abiday

Reputation: 95

Is there any way to catch an error thrown from javascript in cefsharp in my c# program?

Say for example that I am running a script through cefSharp using the ExecuteJavaScriptAsync(..) method and that an error is thrown while running the script, how can I detect it and then catch it in my c# program ?

Upvotes: 5

Views: 1200

Answers (1)

Denys Fiialko
Denys Fiialko

Reputation: 259

If you need to evaluate code which returns a value, use the Task EvaluateScriptAsync(string script, TimeSpan? timeout) method. Javascript code is executed asynchronously and as such uses the .Net Task class to return a response, which contains error message, result and a success (bool) flag.

// Get Document Height
var task = frame.EvaluateScriptAsync("(function() { var body = document.body, html = document.documentElement; return  Math.max( body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight ); })();", null);

task.ContinueWith(t =>
{
    if (!t.IsFaulted)
    {
        var response = t.Result;
        EvaluateJavaScriptResult = response.Success ? (response.Result ?? "null") : response.Message;
    }
}, TaskScheduler.FromCurrentSynchronizationContext());

Upvotes: 7

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