Retrieve data from browser local storage using c#

Question

Is it possible to retrieve data from chrome/firefox local storage using C#?

Answer 1

When using Chromium Embedded Framework I found that the above solution has many limitations. It seems like Chromium have moved to using leveldb instead.

I ended up with a solution where I inject JS code that modify local storage in FrameLoadStart. (it should be easy to read values as well - JavascriptResponse.Result can be casted to a IDictionary when using this script: "window.localStorage;" instead)

// writing local storage in FrameLoadStart
foreach (var entry in LocalStorage)
{
    script += $"window.localStorage.{entry.Key} = '{entry.Value}';";
}

IFrame frame = chromeBrowser.GetMainFrame();
var result = await frame.EvaluateScriptAsync(script , frame.Url, 0);
if(!result.Success)
{
    throw new Exception(result.Message);
}