winform编程，怎么改变某个加载的网页里的checkbox的值

Question

我用注入不行
webBrowser1.Document.InvokeScript("document.GetElementById('J_SafeLoginCheck').checked = false;");
求方法

Answer 1

HtmlDocument doc = webBrowser1.Document;
            HtmlElementCollection elements = doc.All;
            foreach (HtmlElement element in elements)
            {
                if (element.GetAttribute("type") == "")
                {
                    element.SetAttribute("checked ","checked");
                    
                }
            }

Answer 2

if (element.GetAttribute("type") == "checkbox")
                {
                    element.SetAttribute("checked ", "false");                }