Display list from model in ASP.Net MVC view where header and details are on the same list

Question

User-1248511554 posted

I have to display the model in Master-details mode in my partial, but my model is a single entity

public class Presenter
    {
        public int IdHeader { get; set; } <-- key
        
        public string HeaderName{ get; set; }

        public string Mail { get; set; }


        /*Detail fields*/

        public string Note { get; set; }

        public int Places { get; set; }

        public int? IdIdHeaderInDetail { get; set; } <-- f-key

        public int Idetail { get; set; } <-- key

        public string DesDetail { get; set; }

    }

My partial page are:

@model PagedList.IPagedList<Presenter>
    @using PagedList.Mvc

    <link href="~/Content/PagedList.css" rel="stylesheet" type="text/css" />

    @{
        Layout = String.Empty;
        var currentModel = string.Empty;
    }


    @{
        if (Model.Count > 0)
        {


            foreach (var element in Model)
            {
                if (currentModel != element .HeaderName)
                {
                    @Html.DisplayFor(a => Model);
                    while (element .IdIdHeaderInDetail == element .IdHeader)
                    {
                        @Html.DisplayFor(a => element);
                    }
                    if(element .IdEnteStruttura != element .IdEnte)
                    {
                        currentModel = element .HeaderName;
                    }
                }
            }
        }
        else
        {
            <label class="labels">No records found</label>
        }

    }

    @{
        if (Model.Count > 0 && Model.PageSize < Model.TotalItemCount)
        {
            <br />
            <div class="pagination">
                Pagina @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber) di @Model.PageCount

                @Html.PagedListPager(Model, page => Url.Action("Index", new { page }))
            </div>
        }
    }

Doing so, however, triggers a loop and I fear that in the end I will render the entire list on screen n times also because having a single list many data are duplicated

Answer 1

User1312693872 posted

Hi,shaun87Rp

Doing so, however, triggers a loop

The following code will lead to loop because of the 'while', you should change the while to if

while (element .IdIdHeaderInDetail == element .IdHeader)
                    {
                        @Html.DisplayFor(a => element);
                    }

Best Regards,

Jerry Cai