按预期方式填充kendo网格，按预期方式将ConfigurationSettings显示为明细行，但是当尝试编辑该行时，viewModel的状态不同，编辑时某些先前填充的属性为null显示弹出窗口。是否需要剑道“技巧”或其他接线？
@(Html.Kendo().Grid<ConfiguationViewModel>()
.Name("configurationGrid")
.Columns(columns =>
{
columns.Bound(c => c.Id).Width(150).Hidden(true);
columns.Bound(c => c.Name);
columns.Bound(c => c.ConfigurationType).ClientTemplate("#= ConfigurationType.ConfigurationTypeName #").EditorTemplateName("ConfigurationType");
columns.Bound(c => c.HasParentConfiguration);
columns.Bound(c => c.CanOverride);
columns.Bound(c => c.IsActive);
columns.Command(command =>
{
command.Edit().Text(" ").HtmlAttributes(new { title = "Edit Configuration" });
command.Destroy().Text(" ").HtmlAttributes(new { title = "Delete Configuration" });
}).Width(210);
})
.Editable(editable => editable.Mode(GridEditMode.PopUp)
.TemplateName("Configuration").Window(w => w.Width(860).Resizable(r => r.Enabled(true)))
.ConfirmDelete("Are you sure you want to delete this configuration?")
.DisplayDeleteConfirmation("Configuration deleted"))
.Pageable(pager => pager
.Input(false)
.Numeric(true)
.Info(true)
.PreviousNext(true)
.Refresh(true)
.PageSizes(new[] { 10, 15, 20 }))
.ClientDetailTemplateId("configDetailTemplate")
.Sortable(sortable =>
{
sortable.SortMode(GridSortMode.SingleColumn);
})
.Scrollable(scrollable => scrollable.Enabled(false))
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(20)
.Events(events => events.Error("handleErrors").Sync("sync_handler"))
.Model(model => model.Id(c => c.Id))
.Read(read => read.Action("Read", "Configuration"))
.Create(create => create.Action("Create", "Configuration"))
.Update(update => update.Action("Edit", "Configuration"))
.Destroy(delete => delete.Action("Delete", "Configuration"))
))
public class ConfiguationViewModel
{
public int Id { get; set; }
[Required]
[MaxLength(255)]
public virtual string Name { get; set; }
[Required]
[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}")]
public DateTime DateCreated { get; set; } = DateTime.UtcNow;
...
public virtual ICollection<ConfigurationSettingViewModel> ConfigurationSettings { get; set; } = new HashSet<ConfigurationSettingViewModel>();
}
// detail rows view model
public class ConfigurationSettingViewModel
{
public int ConfigurationId { get; set; }
[Required]
[MaxLength(200)]
public string Key { get; set; }
[Required]
[MaxLength(100)]
public string Value { get; set; }
}
EditorTemplate的模板使用@ Model.Property将为属性（在网格中填充）产生null。
例如，尝试使用@ Model.DateCreated显示日期属性会显示默认日期值，但是如果我使用html helper @Html.EditorFor(model => model.DateCreated)，则会显示具有正确值的日期选择器
@model ConfiguationViewModel
<div class="form-horizontal" style="padding: 12px 4px;">
<h4>Configuration</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="row">
<div class="col-md-10">
<div class="col-md-4">
<div class="form-group">
@Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label" })
@Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
</div>
</div>
...
</div>
</div>
...
<div class="row">
<div class="col-md-10">
<div class="col-md-4">
<div class="form-group" style="padding-left: 18px;">
@Html.LabelFor(model => model.DateCreated, htmlAttributes: new { @class = "control-label" }) : <text>@Model.DateCreated</text><br />
@Html.LabelFor(model => model.ModifiedById, htmlAttributes: new { @class = "control-label text-muted" }) : <text class="text-muted">@Model.ModifiedById</text> <br />
@Html.LabelFor(model => model.DateModified, htmlAttributes: new { @class = "control-label text-muted" }) : <text class="text-muted">@Model.DateModified</text>
</div>
</div>
<div class="col-md-6"> </div>
</div>
</div>
...
<div class="row">
<div class="col-md-10">
<div class="col-md-8">
//NPE
@if (Model != null && Model.ConfigurationSettings.Any())
{
<table class="table table-striped table-hover table-condensed">
<thead>
<tr>
<th scope="col">Configuration Id</th>
<th scope="col">Key</th>
<th scope="col">Value</th>
</tr>
</thead>
<tbody>
// NPE HERE
@foreach (var config in Model.ConfigurationSettings)
{
<tr>
<td>
<h2>@config.ConfigurationId</h2>
</td>
<td>@config.Key</td>
<td>@config.Value</td>
</tr>
}
</tbody>
</table>
}
else
{
<div class="alert alert-warn">No Settings Defined </div>
}
</div>