jQuery DataTables models

jQuery.DataTables.Models.cs

public class DataTableSearch
{
    public string? Value
    {
        get; set;
    }
    public bool Regex
    {
        get; set;
    }
}

public class DataTableRequest
{
    private string? _orderByField;
    public string OrderByField
    {
        get => _orderByField ??= Order.Count > 0 && Columns.Count > 0 ? Columns[Order[0].Column].Data ?? string.Empty : string.Empty;
        set => _orderByField = value;
    }

    private string? _orderByDirection;
    public string OrderByDirection
    {
        get => _orderByDirection ??= Order.Count > 0 ? Order[0].Dir ?? "asc" : "asc";
        set => _orderByDirection = value;
    }

    private int? _pageIndex;
    public int PageIndex
    {
        get => _pageIndex ??= Length > 0 ? Start / Length + 1 : 1;
        set => _pageIndex = value;
    }
    private int? _pageSize;
    public int PageSize
    {
        get => _pageSize ??= Length > 0 ? Length : 10;
        set => _pageSize = value;
    }
    public int Draw
    {
        get; set;
    }

    public int Start
    {
        get;
        set;
    }

    private int _length;
    public int Length
    {
        get => _length;
        set
        {
            _length = value;
            PageSize = value;
        }
    }

    private List<DataTableColumn>? _columns;
    public List<DataTableColumn> Columns
    {
        get => _columns ??= new List<DataTableColumn>();
        set => _columns = value;
    }

    private List<DataTableOrder>? _order;
    public List<DataTableOrder> Order
    {
        get => _order ??= new List<DataTableOrder>();
        set => _order = value;
    }

    public DataTableSearch? Search
    {
        get; set;
    }
}
public class DataTableOrder
{
    public int Column
    {
        get; set;
    }
    public string? Dir
    {
        get; set;
    }
}
public class DataTableColumn
{
    public string? Data
    {
        get; set;
    }
    public string? Name
    {
        get; set;
    }

    public bool Searchable
    {
        get; set;
    }

    public bool Orderable
    {
        get; set;
    }

    public DataTableSearch? Search
    {
        get; set;
    }
}