Ajax.BeginForm() is not working in VB

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VB

MVC

i have called "jquery.unobtrusive-ajax.min.js" in my view page.
but when i click the submit button it does not goes to <http> post method. my code is---

@using (Ajax.BeginForm("ContactInFo", "Customer", new AjaxOptions { HttpMethod = "POST", OnSuccess = "scuccessNotificationContact", OnBegin = "loader" }))
{
.....
........
}

i need to know the correct syntax for vbhtml