wpf 如何在WPF中获取webbrowser控件的输入框的值？
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How to get the value of an input box of the webbrowser control in WPF?
提问by marc40000
I added Microsoft.mshtml as a reference to my project and came this far:
我添加了 Microsoft.mshtml 作为对我的项目的引用，并走到了这一步：
mshtml.IHTMLDocument2 document = (mshtml.IHTMLDocument2)webbrowser.Document;
string username = document.all["username"].GetAttribute("value");
but the 2nd line doesn't work. It says
但第二行不起作用。它说
"error CS0021: Cannot apply indexing with [] to an expression of type 'mshtml.IHTMLElementCollection'"
“错误 CS0021：无法将带有 [] 的索引应用于‘mshtml.IHTMLElementCollection’类型的表达式”
when hovering over "all". How do I access the elements in all?
当悬停在“全部”上时。我如何访问所有元素？
回答by SHSE
Try this:
尝试这个：
var document = (IHTMLDocument3) webbrowser.Document;
var value =
document.getElementsByName("username")
.OfType<IHTMLElement>()
.Select(element => element.getAttribute("value"))
.FirstOrDefault();
回答by user2521493
After struggling for a couple of hours this solutions worked for me.
经过几个小时的努力，这个解决方案对我有用。
Dim document = DirectCast(MainBrowser.Document, IHTMLDocument3)
Dim formName = document.getElementsByName(AppSettings("myFormName")).OfType(Of IHTMLElement)().Select(Function(element) element.getAttribute("name")).FirstOrDefault()
