.net - Webclient results with default parameter value -

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i trying parse webpage through web client using following code.

private sub button1_click(sender object, e eventargs) handles button1.click     dim lnk string = "http://www.therapy-directory.org.uk/search.php?search=central+london&distance=100&uqs=717425"     dim wb new webclient()     wb.headers.add("content-type", "application/json")     addhandler wb.downloadstringcompleted, addressof gettotal     wb.downloadstringasync(new uri(lnk)) end sub  private sub gettotal(sender object, e downloadstringcompletedeventargs)     if e.error nothing         dim str string = e.result         dim doc htmlagilitypack.htmldocument = new htmlagilitypack.htmldocument()         doc.loadhtml(str)          on error resume next         dim tot htmlagilitypack.htmlnode = doc.documentnode.selectnodes("//div[contains(@id,'search-results')]//h3[contains(@class,'search-title')]")(0) '("//div[contains(@id,'search-results')]//span[contains(@class,'pcolour')]")(0)         on error goto 0         if not tot nothing             msgbox(tot.innertext)         end if     else         msgbox(e.error.message)     end if end sub

the result got code "380 results within 6 miles"..but,i have set parameter value of 100 mile. can view in webbrowser there around 1600 within 100 miles.

it seems, showing value default value miles


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