问如何执行绑定到剃刀文本框的GeoCode计算？

EN

public class GeoCodeViewModel
{
    [StringLength(70, MinimumLength = 1)]
    public string Street { get; set; }

    [StringLength(10, MinimumLength = 1)]
    public string PostCode { get; set; }
}

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var model = new GeoCodeViewModel();
        return View(model);
    }

    [HttpPost]
    public ActionResult Index(GeoCodeViewModel model)
    {
        if (!ModelState.IsValid)
        {
            // the model is not valid => redisplay the view so that 
            // the user can fix his errors
            return View(model);
        }

        // TODO: at this stage the model is valid => call the web service
        ...
    }
}

@model GeoCodeViewModel

<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>

@using (Html.BeginForm())
{
    <div>
        @Html.LabelFor(x => x.Street)
        @Html.EditorFor(x => x.Street)
        @Html.ValidationMessageFor(x => x.Street)
    </div>
    <div>
        @Html.LabelFor(x => x.PostCode)
        @Html.EditorFor(x => x.PostCode)
        @Html.ValidationMessageFor(x => x.PostCode)
    </div>
    <p><button type="submit">OK</button></p>
}