R2D221
About getting the current content of a document
For example, when I click the button to run JS, I find that what I get from the document content is not the final document content, it is a document when some content is not fully loaded
Maybe it's because the content in ifram is empty. How can I load the ifram completely without opening a new window。
Sorry, I haven't tested iframes yet.
When you use DOMContentLoaded directly in C#, it should fire when the document is fully loaded, but the resources not yet.
Maybe you could try with the NavigationCompleted event instead.
Even if the page is fully loaded, I can't get it from window.document Get htmliframeelement content