asp.net - How can I trigger Html.BeginForm by clicking a button? -

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here html.beginform code. want pass 2 values action checkoutproduct.
how can trigger html.beginform clicking button? 

@html.beginform("checkoutproduct", "checkout") {     <input type="hidden" id="productcodeforcheckout" value="" />     <input type="hidden" id="productqtyforcheckout" value="0" /> }  <button class="btn" id="checkout"><span>add cart</span></button>

just place submit button inside form

@html.beginform("checkoutproduct", "checkout") {     <input type="hidden" id="productcodeforcheckout" value="" />     <input type="hidden" id="productqtyforcheckout" value="0" />      <input type="submit" class="btn" id="checkout" title="add cart" /> }

if prefer stick button instead of input, set type submit

<button type="submit" class="btn" id="checkout">...</button>

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