How to fill out a form field without a name in webbrowser control?

Question

In the past, I used the code below to fill out a form field using the webbrowser control in VB.Net. The page I am working with doesn't have name field for the inputbox, so my code doesn't work. How would I fill out the input box defined at the bottom of this post in bold?

Dim iPage As HtmlDocument
iPage = wb1.Document
iPage.All.Item("case_num").InnerText() = caseNum
iPage.All.Item("button1").InvokeMember("click")

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**<input type="text" id="tbSymbolLookupMain" mode="mixed" autocomplete="off" defaulttxt="Enter Name or Symbol(s)" value="Enter Name or Symbol(s)" class="SymbolLookup  fhHandleFocus fhDefault">**

Answer 1

Is input in your question actual data you work with? You can try to use HtmlDocument.GetElementById to find it by id. But unless I'm mistaken what you do should already work as MSDN states Item("some name") on HtmlElementCollection uses "some name" to match both by Id and Name. So you might use your usual way but provide id instead of name