@page
@model ArmUpdater.Pages.Index2Model
@{
    ViewData["Title"] = "Index2";
}

<div class="row">
    <form method="post">
        <div class="col-md-8">
            @foreach (var service in Model.Services)
            {
                <div class="row">
                    <div class="col-md-4">
                        <label asp-for="@service.Id"></label>
                    </div>
                    <div class="col-md-3">
                        <select asp-items="@(new SelectList(service.Versions))"></select>
                    </div>
                    <div class="col-md-3">
                        <label>@service.CurrentVersion</label>
                    </div>
                </div>
            }
        </div>
        <input type="submit" class="btn btn-default" asp-page-handler="update" value="Update" />
    </form>
</div>

public class Index2Model : PageModel
{
    public class ServiceModel
    {
        public string Id { get; set; }

        public Version CurrentVersion { get; set; }

        public Version[] Versions { get; set; }

        public ServiceModel(string id, Version version, Version[] availableVersions)
        {
            Id = id;
            CurrentVersion = version;
            Versions = availableVersions;
        }
    }

    private readonly IceGridEngine _iceGridEngine;

    public ServiceModel[] Services { get; set; }

    public Index2Model(IceGridEngine iceGridEngine)
    {
        _iceGridEngine = iceGridEngine;
    }

    public void OnGet()
    {
        Services = iceGridEngine.GetServices();
    }

    public async Task<IActionResult> OnPostUpdateAsync(IEnumerable<ServiceModel> services)
    {
        var tmp = services.ToArray();
        return Page();
    }
}