通过ExecuteScriptAsync调用文件对话框

Question

我尝试在devtools控制台document.getElementById('global-files-button').click()中执行以下脚本，并显示文件对话框。

但是当我尝试通过ExecuteScriptAsync执行此清单时，什么也没发生。

chrome.GetMainFrame()
  .ExecuteJavaScriptAsync("document.getElementById('global-files-button').click();");

---

        private void button4_Click(object sender, EventArgs e)
        {
        settings = new CefSettings();
        Cef.Initialize(settings);
        chrome = new ChromiumWebBrowser("https://imgur.com/upload");
        this.panel1.Controls.Add(chrome);
        chrome.Dock = DockStyle.Fill;
        chrome.AllowDrop = true;
        }


    private void button5_Click(object sender, EventArgs e)
    {
     chrome.GetMainFrame().ExecuteJavaScriptAsync("document.getElementById('global-files-button').click();");
    }