Try this:
$('#sendButton').click(function(){
$('form[name=yourFormName]').setAttrib('action','actionName');
$('form[name=yourFormName]').submit();
});
Or try other way:
$('#sendButton').on('click', function () {
var yourData = { tag1 : $('#tag1').val(), tag2 : $('#tag2').val() /*etc..*/ };
$.ajax({
url: '@Url.Action("Action", "Controller")',
type: "POST",
data: yourData ,
success: function (response) {
//sended..
},
error: function (response) {
//not sended..
},
});
});