Question

Does ajax post supports the usual validation upon submit of a form?

Is

@using(Html.BeginForm()){
@Hml.ValidationSummary()

<input type="submit" value ="Save">
}

same as

    @using(Html.BeginForm(new {id=FormTest})){
     @Hml.ValidationSummary()
<input type="button" value= Save>
    }

<script type="javascript">
$("#Save").click(function(){
$("#FormTest").submit();

});
</script>

Answer 1

There are so many wrong things going on here that I really don’t know where to start.

1. Your Html.BeginForm definition is wrong: you are confusing routeValues with htmlAttributes. See below for solution

2. Your button doesn’t have an id so your javascript selector will most probably fail

3. All those efforts are not necessary because a simple <input type="submit"> button does it out of the box.

Now lets suppose that somehow you are a fan of javascript and you want to write it (I don’t know why would you want to write code but anyway). So start by fixing your form definition:

@using(Html.BeginForm("someAction", "someController", FormMethod.Post, new { id = "FormTest" }))    
{
    @Html.ValidationSummary()
    @Html.TextBoxFor(x => x.Foo)

    <input type="button" value="Save" id="Save" />
}

and then you could do this:

$('#Save').click(function() {
    var form = $('#FormTest');
    if (form.valid()) {
        form.submit();
    }
});

obviously you must ensure that the client scripts are properly included on your page:

<script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script>

and of course the real solution I would recommend you is to use a submit button for submitting forms:

@using(Html.BeginForm("someAction", "someController", FormMethod.Post, new { id = "FormTest" }))    
{
    @Html.ValidationSummary()
    @Html.TextBoxFor(x => x.Foo)

    <input type="submit" value="Save" id="Save" />
}

Now you don’t need any javascript (obviously you still need the two script inclusions for the unobtrusive validation).