javascript - Collecting text box values in Visual Basic -

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i have javascript code assigns value text box:

document.getelementbyid('longitudetextbox').value = location.coords.longitude;

what want value of text box on visual basic:

dim logitude string = longitudetextbox.text

this works if code inside button, if use on page event page_load, i'm not receiving data.

try using when pageload.complete = true


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