How to get JavaScript output as string in CefSharp?

Question

I am trying to get the output of this javascript string but so far what I have tried did not work

My current code is this. response is blank what I want is 4

var task = chromiumWebBrowser1.EvaluateScriptAsync("2+2");
            var response = task.Result;
            MessageBox.Show(String.Format("output", response));

Any help would be great.

Answer 1

The EvaluateScriptAsync method returns Task<JavascriptResponse>. You can await the Task to obtain the JavascriptResponse object then get the Result or error.

JavascriptResponse response = await chromiumWebBrowser.EvaluateScriptAsync("1 + 1");

if (response.Success)
{
    var onePlusOne = (int)response.Result;
}
else
{
    var error = response.Message; 
}