更新：我还没有弄清楚任何事情。看起来它确实应该按原样工作。
我有一个绑定到视图模型的 Telerik 网格。网格基本上显示车辆对象的名称和类型。在 Datakeys 中，我添加了 VehicleID 和 Timestamp 字段。当网格发布 ajax 更新时，Timestamp 字段为空。
我已经验证了视图模型中的时间戳字段在传递给视图时有一个值。
以下是相关代码：
看法：
...
@(Html.Telerik().Grid(Model)
.Name("Grid")
.Columns(columns =>
{
columns.Bound(o => o.VehicleID).Visible(false);
columns.Bound(o => o.VehicleName);
columns.Bound(o => o.VehicleType);
})
.DataBinding(dataBinding =>
{
dataBinding.Server().Select("Index", "Vehicle");
dataBinding.Ajax().Select("_Index", "Vehicle").Enabled(true);
dataBinding.Ajax().Update("_SaveVehicle", "Vehicle");
dataBinding.Ajax().Delete("_DeleteVehicle", "Vehicle");
})
.Scrollable(scrolling => scrolling.Enabled(true))
.Sortable(sorting => sorting.Enabled(true))
.Pageable(paging =>
paging.Enabled(true)
.PageSize(20)
.Position(GridPagerPosition.Bottom))
.Filterable(filtering => filtering.Enabled(true))
.Groupable(grouping => grouping.Enabled(true))
.Footer(true)
.ToolBar(toolbar => toolbar.Template(
@<text>
@using (Html.BeginForm("ExportCsv", "Vehicle", FormMethod.Post, new {id = "export"}))
{
<text>
<input type="submit" value="Export to CSV" id="export" />
</text>
}
<label class="error">@ViewBag.AjaxErrorMessage</label>
</text>
))
.Columns(columns =>
{
columns.Command(command =>
{
command.Custom("details").Text("Details").Action("Edit", "Vehicle").HtmlAttributes(new { style = "text-align: center" }) ;
command.Edit().ButtonType(GridButtonType.Image);
command.Delete().ButtonType(GridButtonType.Image);
}).Width(165);
})
.DataKeys(dataKeys =>
{
dataKeys.Add(key => key.Timestamp).RouteKey("Timestamp");
dataKeys.Add(key => key.VehicleID).RouteKey("VehicleID");
})
.ClientEvents(events => events.OnEdit("onEdit"))
.ColumnContextMenu()
.Resizable(config =>
{
config.Columns(true);
})
.Reorderable(config =>
{
config.Columns(true);
})
)
<script type = "text/javascript">
function onEdit(e) {
$(e.form).find('#VehicleType').data('tDropDownList').select(function (dataItem) {
return dataItem.Text == e.dataItem['vehicleType'];
});
}
</script>
查看型号：
using System;
using System.ComponentModel.DataAnnotations;
namespace ShopLog.ViewModels
{
public class VehicleIndexViewModel
{
//public IEnumerable<Vehicle> Vehicles { get; set; }
[Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid VehicleID { get; set; }
[Timestamp]
public Byte[] Timestamp { get; set; }
[Required]
[Display(Name = "Vehicle Name")]
[MaxLength(30, ErrorMessage = "The {0} must be no more than {2} characters long.")]
public string VehicleName { get; set; }
[Display(Name = "Fuel Type")]
[StringLength(30, ErrorMessage = "\"{0}\" must be no more than {1} characters long.")]
public string FuelType { get; set; }
[Display(Name = "Notes")]
[DataType(DataType.MultilineText)]
public string Notes { get; set; }
[UIHint("VehicleType")]
[Display(Name = "Type")]
public string VehicleType { get; set; }
[Display(Name = "Transmission Type")]
public String TransmissionType { get; set; }
}
}
Controller Post Code for Update 在第一行放置一个断点表明vehicleIndexViewModel 的timestamp 属性为空。我试图从表单集合中获取时间戳，但它在那里也是空的。
[AcceptVerbs(HttpVerbs.Post)]
[GridAction]
public ActionResult _SaveVehicle(VehicleIndexViewModel vehicleIndexViewModel, FormCollection formcollection)
{
if (TryUpdateModel(vehicle))
{
try
{
//Delete the record
db.Entry(vehicle).State = EntityState.Modified;
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
ViewBag.AjaxErrorMessage = "That record has been edited by someone else since you started editing it.";
}
catch (DataException)
{
ViewBag.AjaxErrorMessage = "Error saving data, please try again.";
}
}
//Rebind the grid
PopulateVehicleTypes();
return View(new GridModel(GetIndexViewData()));
}
谢谢！