Question

144

WebView2 - Get an attribute

rated 0 times [ 151] [ 7] / answers: 1 / hits: 6462 / 3 Years ago, thu, april 1, 2021, 12:00:00

I am trying to understand the architecture in WebView2. With WebBrowser i used to get an attribute from a result returned by the GetElementById as follows: Document.GetElementById("DropDownList").GetAttribute("selectedIndex")

I know that the ExecuteScriptAsync in WebView2 can run a javascript and return a result as a string. However, it looks like that it does not know how to get an attribute from an element. The below code returns a null. Although, the getElementById returns the correct result.

ExecuteScriptAsync("document.getElementById('DropDownList').getAttribute('selectedIndex')")

Is my syntax incorrect? How to get an attribute in WebView2?. Do we have to write a function in the script and call it from the host?

Thanks

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jenamackennac

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answered 3 Years ago conorm · Accepted Answer

A HTMLSelectElement does not have an attribute called.'selectedIndex'. It has a PROPERTY called 'selectedIndex'.

Call it like this from WebView2:

await ExecuteScriptAsync("document.getElementById('DropDownList').selectedIndex");