Epoch/Unix Razor 视图中日期时间的时间戳(以毫秒为单位)

Epoch/Unix timestamp (in ms) to Datetime in Razor View

我有一个 .Net Core MVC 项目,我在其中使用 pagination 作为定义的 pr。 Microsoft 文档。

因为是这种情况,而且由于我的数据库时间戳在 Epoch 中,我需要将时间戳转换为日期时间对象,因为它用于我的 Razor 视图中的 table。 table创建如下:

@model PaginatedList<MSPFrontend.Tripmetadata>
<div class="table-responsive">
    <table class="table table-bordered table-condensed table-hover table-striped">
        <thead>
            <tr>
                <th>Trip Id</th>
                <th>Start Time</th>
                <th>End Time</th>
                <th>Duration</th>
                <th>Avg Speed</th>
                <th>Distance</th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model)
            {
                <tr class="trip" data-id="@item.Tripid" data-url="@Url.Action("TripMapping", "Trip")">
                    <td>@item.Tripid</td>
                    <td>@item.Starttimestamp</td>
                    <td>@item.Endtimestamp</td>
                    <td>@item.Duration</td>
                    <td>@item.AvgSpeed knots</td>
                    <td>@item.Distance km</td>
                </tr>
            }
        </tbody>
    </table>
</div>

我的模型如下所示:

public partial class Tripmetadata
{
    public Tripmetadata()
    {
    }

    [Key]
    public int Tripid { get; set; }

    [Display(Name = "Start Timestamp")]
    public long? Starttimestamp { get; set; }

    [Display(Name = "End Timestamp")]
    public long? Endtimestamp { get; set; }

    public long? Duration { get; set; }

    [Display(Name = "Average Speed")]
    public decimal? AvgSpeed { get; set; }

    public decimal? Distance { get; set; }
}

我以前使用 ViewModel 来处理这个问题,但是作为 pr。 Microsoft Pagination 文档分页需要我使用我的模型,因为它在我滚动分页时请求数据。

我认为可以这样做:

<td>@new DateTime(1970, 1, 1, 0, 0, 0).AddMilliseconds(@Convert.ToDouble(@item.Starttimestamp))</td>

但是当我尝试时得到以下信息:

jquery.js:9566 GET http://localhost:1048/Trip/TripTable 500 (Internal Server Error)

我设法找到了我的解决方案,实际上非常简单。

在我的 @foreach(var item in Model) 中,我可以进行转换,尽管这可能不是最好的方法。

我最终得到以下观点:

<div class="table-responsive">
    <table class="table table-bordered table-condensed table-hover table-striped">
        <thead>
            <tr>
                @{ 
                    var headerItem = Model[1];
                }
                <th>@Html.DisplayNameFor(modelItem => headerItem.Tripid)</th>
                <th>@Html.DisplayNameFor(modelItem => headerItem.Starttimestamp)</th>
                <th>@Html.DisplayNameFor(modelItem => headerItem.Endtimestamp)</th>
                <th>@Html.DisplayNameFor(modelItem => headerItem.Duration)</th>
                <th>@Html.DisplayNameFor(modelItem => headerItem.AvgSpeed)</th>
                <th>@Html.DisplayNameFor(modelItem => headerItem.Distance)</th>
            </tr>
        </thead>
        <tbody>
            @foreach(var item in Model)
            {
                var startTime = new DateTime(1970, 1, 1, 0, 0, 0).AddMilliseconds(Convert.ToDouble(@item.Starttimestamp));
                var endTime = new DateTime(1970, 1, 1, 0, 0, 0).AddMilliseconds(Convert.ToDouble(@item.Endtimestamp));
                double diff = Convert.ToDouble(item.Endtimestamp) - Convert.ToDouble(item.Starttimestamp);
                var duration = TimeSpan.FromMilliseconds(diff);
                var avgSpeed = Math.Truncate(100 * Convert.ToDecimal(item.AvgSpeed)) / 100;
                var distance = Math.Truncate(100 * Convert.ToDecimal(item.Distance)) / 100;
                <tr class="trip" data-id="@item.Tripid" data-url="@Url.Action("TripMapping", "Trip")">
                    <td>@item.Tripid</td>
                    <td>@startTime</td>
                    <td>@endTime</td>
                    <td>@duration</td>
                    <td>@avgSpeed knots</td>
                    <td>@distance km</td>
                </tr>
            }
        </tbody>
    </table>
</div>

我的表格 header 下的部分允许我在我的模型中定义我的 header。如下:

public partial class Tripmetadata
{
    public Tripmetadata()
    {
    }

    [Key]
    [Display(Name = "Trip ID")]
    public int Tripid { get; set; }

    [Display(Name = "Start Timestamp")]
    public long? Starttimestamp { get; set; }

    [Display(Name = "End Timestamp")]
    public long? Endtimestamp { get; set; }

    [Display(Name = "Duration")]
    public long? Duration { get; set; }

    [Display(Name = "Average Speed")]
    public decimal? AvgSpeed { get; set; }

    [Display(Name = "Distance")]
    public decimal? Distance { get; set; }

}