如何在列表脚手架视图的输出中呈现某个标题“[Display(Name="Some Title")]
DataAnnotations”?
我为这个类创建了一个强类型的list scaffold视图:
public class CompanyHoliday
{
[Key]
public int Id { get; set; }
[Required]
[Display(Name = "Datum")]
[DataType(System.ComponentModel.DataAnnotations.DataType.Date)]
public DateTime Date { get; set; }
[Required]
[StringLength(50)]
[Display(Name = "Feiertag Name")]
public string Name { get; set; }
}
视图如下所示:
@model IEnumerable<Zeiterfassung.Domain.CompanyHoliday>
@{
ViewBag.Title = "Year";
}
<h2>Year</h2>
<p>
@Html.ActionLink("Create New", "Create")
</p>
<table>
<tr>
<th></th>
<th>
Date
</th>
<th>
Name
</th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
@Html.ActionLink("Details", "Details", new { id=item.Id }) |
@Html.ActionLink("Delete", "Delete", new { id=item.Id })
</td>
<td>
@String.Format("{0:g}", item.Date)
</td>
<td>
@item.Name
</td>
</tr>
}
</table>
但是,我不想在表头中出现“日期”和“名称”。我希望"Datum“和"Feiertag Name”在那里动态呈现。
实际的列标题标题应该来自Display DataAnnotation。
我该怎么做呢?
发布于 2011-11-20 01:04:59
这是一个老话题,但我想出了一个扩展方法来处理这个问题。
假设我的模型是:
public class MyModel
{
[Display(Name = "Some Property")]
public string SomeProp { get; set; }
}
将此方法放入静态类中:
namespace Web.Extensions
{
public static class HtmlHelperExtensions
{
public static MvcHtmlString DisplayNameFor<TModel, TProperty>(this HtmlHelper<IEnumerable<TModel>> helper, Expression<Func<TModel, TProperty>> expression)
{
var name = ExpressionHelper.GetExpressionText(expression);
name = helper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
var metadata = ModelMetadataProviders.Current.GetMetadataForProperty(() => Activator.CreateInstance<TModel>(), typeof(TModel), name);
return new MvcHtmlString(metadata.DisplayName);
}
}
}
然后在接受IEnumerable<MyModel>
的视图中,您可以像这样使用它:
@using Web.Extensions
@model IEnumerable<MyModel>
<table>
<tr>
<th>
@Html.DisplayNameFor(m => m.AvgElecCost)
</th>
生成的HTML将为:
<th>
Some Property
</th>
希望它能帮上忙!
发布于 2012-10-18 02:03:38
这是我一直遵循的模式。这假设列表永远不会为空,但可以为空,但条件可以很容易地为空列表而短路。不过,我确实喜欢Brian的扩展方法。
@if (Model.BurgersList.Count > 0)
{
var meta = Model.BurgersList.First();
<table>
<tr>
<th>
@Html.DisplayNameFor(m => meta.Title)
</th>
<th>
@Html.DisplayNameFor(m => meta.HasMustard)
</th>
//etc....
@foreach (var item in Model.AssignmentDefinitions)
{
<tr>
<td>
@Html.DisplayFor(m => item.Title)
</td>
<td>
@Html.DisplayFor(m => item.HasMustard)
</td>
//etc...
}
</table>
}
else
{
@:No burgers available. Create(usually make this an action link) a new one.
}
发布于 2012-12-27 10:06:28
//MVC4 has the DisplayNameFor Extensions
public static class HtmlHelperExtensions
{
public static MvcHtmlString DisplayNameFor<TModel, TProperty>(this HtmlHelper<IEnumerable<TModel>> helper, Expression<Func<TModel, TProperty>> expression)
{
return DisplayNameFor(expression);
}
public static MvcHtmlString DisplayNameFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression)
{
return DisplayNameFor(expression);
}
private static MvcHtmlString DisplayNameFor<TModel, TProperty>(Expression<Func<TModel, TProperty>> expression)
{
var metadata = ModelMetadata.FromLambdaExpression<TModel, TProperty>(expression, new ViewDataDictionary<TModel>());
var htmlFieldName = ExpressionHelper.GetExpressionText(expression);
string s = metadata.DisplayName ?? (metadata.PropertyName ?? htmlFieldName.Split(new char[] { '.' }).Last<string>());
return new MvcHtmlString(HttpUtility.HtmlEncode(s));
}
}
https://stackoverflow.com/questions/4947854
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