我试图只刷新一个Html.ListBox。但是我不知道如何使用ASP执行此操作。现在它将刷新整个页面。
这是我的消息来源:控制器
[HttpPost]
public ActionResult KenmerkSelectie(string Kenmerken1, string Buttontype, List<string> VarFromKenmerk1)
{
if (Buttontype == "submit")
{
//Write to a database and process stuff
return this.RedirectToAction("submitForm");
}else{
ViewBag.VarFromKenmerk1 = ...;
//TODO: Must refresh the ListBox: VarFromKenmerk1;
//AND AND NOT refresh whole page;
return View("index");
}
网页视图:
@using (Html.BeginForm("KenmerkSelectie", "KenmerkSelectie", FormMethod.Post, new { id = "kenmerk1" }))
{
@Html.DropDownList("Kenmerken1",
(SelectList)ViewBag.Kenmerk,
"-- Selecteer een kenmerk--", new
{
onchange = "refreshVarFromKenmerk1();"
})
@Html.ListBox("VarFromKenmerk1", (SelectList)ViewBag.var, new { @style = "width: 252px; height: 300px" })
<input type="submit" value="submit" id="btnNext" name="ButtonType" />
}
Javascript:
<script type="text/javascript">
function refreshVarFromKenmerk1() {
document.getElementById('kenmerk1').submit();
}
</script>
没有Javascript可以做到这一点吗?或者更好的是,我该如何实现这一目标?
我认为您正在寻找的是控制器中的Request.IsAjaxRequest()
。您可以触发 Ajax 请求,例如:
$('#kenmerk1').change(function () { $.get(); /* this won't work but shows the basics */ });
然后,您可以在控制器中返回JsonResult
并刷新列表框。