第一步是将此表单放入局部视图中,并让控制器操作为该局部视图提供服务。因此,让我们以一个示例控制器为例:
public class HomeController : Controller
{
public ActionResult Index()
{
return View();
}
public ActionResult MyForm()
{
var model = new MyViewModel();
return PartialView(model);
}
[HttpPost]
public ActionResult MyForm(MyViewModel model)
{
if (!ModelState.IsValid)
{
// there were validation errors => redisplay
// the form so that the user can fix them
return PartialView(model);
}
// at this stage validation has passed => we could do
// some processing and return a JSON object to the client
// indicating the success of the operation
return Json(new { success = true });
}
}
MyForm 动作用于分别显示表单并在提交时对其进行处理。Index 操作将简单地提供一个包含允许弹出模式的链接的视图。
所以这里是MyForm.cshtml
部分:
@model MyViewModel
@using (Ajax.BeginForm(new AjaxOptions { UpdateTargetId = "dialog", OnSuccess = "submitSuccess" }))
{
@Html.LabelFor(x => x.Foo)
@Html.EditorFor(x => x.Foo)
@Html.ValidationMessageFor(x => x.Foo)
<button type="submit">OK</button>
}
最后是Index.cshtml
视图:
<script src="@Url.Content("~/Scripts/jquery-ui-1.8.11.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.js")" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
// we subscribe to the click handler of the link
$('#mylink').click(function () {
// when the anchor is clicked we attach the dialog to the div
var url = this.href;
$('#dialog').dialog({
open: function (event, ui) {
// when the dialog is shown we trigger an AJAX request
// to the MyForm action to retrieve the contents of the
// form and show it
$(this).load(url);
}
});
return false;
});
});
// this function is used by the Ajax form. It is called
// when the form is submitted.
var submitSuccess = function (result) {
// we check to see if the controller action that was
// supposed to process the submission of the form
// returned a JSON object indicating the success of the
// operation
if (result.success) {
// if that is the case we thank the user and close the dialog
alert('thanks for submitting');
$('#dialog').dialog('close');
}
};
</script>
@Html.ActionLink("Show modal form", "myform", null, new { id = "mylink" })
<div id="dialog"></div>
显然,应该将 javascript 外部化到一个单独的文件中,但出于演示的目的,我将其保留在视图中。