Como fazer para dar o click

Question

Me ajudem pfvr ja tentei de td

<button onclick="CreditSubmit('MYLFUNDR', 'wr_billing');return false;" class="btn btn-default donate-btn">DONATE NOW</button>

Usei:

 For Each element As HtmlElement In WebBrowser1.Document.GetElementsByTagName("button")
            If element.GetAttribute("oneclick") = "CreditSubmit('MYLFUNDR', 'wr_billing');return false;" Then
            element.InvokeMember("click")
               End If
              Next

 WebBrowser1.Document.GetElementById("oneclick").InvokeMember("click")