How Do I Validate a field on a MVC Page?

How do I validate a MVC page?  I need to use MVC validation.  I am not getting the validation messages returned back to the view.

I have this model setup:
        [Display(Name = LabelConstants.LastName)]
        public string LastName { get; set; }

Add Applicant View page:
<div class="col-md-3">
                @Html.LabelAndRequiredFor(model => model.LastName, new {@class = "form-label"})
                @Html.TextBoxFor(model => model.LastName, new {@class = "form-control", @placeholder = "Enter last name"})
                @Html.ValidationMessageFor(model => model.LastName)


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Mihai StancescuSoftware Engineer Commented:

Do you have in your view  @Html.ValidationSummary(true) ?


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