ASP.NET MVC 5设置下拉列表的值
ASP.NET MVC 5设置下拉列表的值
提问于 2015-06-06 10:32:01
我想做一个从1-5的数字评级的DropDownList。我有一个评级模型，我想将这些下拉值应用于WaitTime、Attentive和Outcome。
我可以在视图中设置这些值并使用模型吗？如果是这样，我该怎么做呢？
我的模型类：
public class Ratings
{
//Rating Id (PK)
public int Id { get; set; }
public string UserId { get; set; }
//Medical Practice (FK)
public int MpId { get; set; }
public MP MP { get; set; }
//User ratings (non-key values)
[Required] //Adding Validation Rule
public int WaitTime { get; set; }
[Required] //Adding Validation Rule
public int Attentive { get; set; }
[Required] //Adding Validation Rule
public int Outcome { get; set; }
}My View
<div class="form-group">
@Html.LabelFor(model => model.WaitTime, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.WaitTime, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.WaitTime, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Attentive, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Attentive, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Attentive, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Outcome, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Outcome, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Outcome, "", new { @class = "text-danger" })
</div>
</div>回答 3
Stack Overflow用户
回答已采纳
发布于 2015-06-06 11:05:46
对于每个字段，请使用此方法而不是EditorFor：
@Html.DropDownListFor(model => model.Outcome, new SelectList(Enumerable.Range(1, 5)))Stack Overflow用户
发布于 2015-06-06 11:07:12
这是工作的小提琴- https://dotnetfiddle.net/daB2DI
简而言之，让我们说你的模型是-
public class SampleViewModel
{
[Required] //Adding Validation Rule
public int WaitTime { get; set; }
[Required] //Adding Validation Rule
public int Attentive { get; set; }
[Required] //Adding Validation Rule
public int Outcome { get; set; }
}你的控制员的行为是-
[HttpGet]
public ActionResult Index()
{
return View(new SampleViewModel());
}
[HttpPost]
public JsonResult PostData(SampleViewModel model)
{
return Json(model);
}你的CSHTML应该是-
@model HelloWorldMvcApp.SampleViewModel
@{
ViewBag.Title = "GetData";
}
<h2>GetData</h2>
@{
var items = new List<SelectListItem>();
for (int i = 1; i < 6; i++)
{
var selectlistItem = new SelectListItem();
var code = 0;
selectlistItem.Text = (code + i).ToString();
selectlistItem.Value = (code + i).ToString();
items.Add(selectlistItem);
}
}
@using (Html.BeginForm("PostData","Home"))
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>SampleViewModel</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.WaitTime, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownListFor(model => model.WaitTime, items, "--Select--", new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.WaitTime, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Attentive, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownListFor(model => model.Attentive, items, "--Select--", new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Attentive, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Outcome, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownListFor(model => model.Outcome, items, "--Select--", new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Outcome, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}当你运行代码时，你应该看到下面的页面-
当您选择一些值并单击create时，您应该在PostData操作中获得这些值。
Stack Overflow用户
发布于 2015-06-06 11:05:54
尝试将其调整到控制器中的项目中：
ViewBag.ParentID = new SelectList(departmentsQuery, "NewsMID", "Title", selectedDepartment);
return View(model);在你看来
@Html.DropDownList("ParentID")页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/30681769
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