ContensisFormsHelper-basic.cshtml

...
@using (Html.BeginContensisForm("MyAction", "api/MyApiController"))
{
    @Html.ValidationSummary("Validation Summary", new { @class = "validation-summary-class" })
    <div class="form-group">
        <label for="firstname">Firstname:</label>
        @Html.TextBox("Firstname", null, new { @type = "email", @class = "form-control" })
    </div>
    ...
}