How to use Kendo UI Grid with ToDataSourceResult(), IQueryable, ViewModel and AutoMapper?

Question

What is the best approach to load/filter/order a Kendo grid with the following classes:

Domain:

public class Car
{
    public virtual in         


        

Answer 1

František's solution is very nice! But be careful with casting Filters to FilterDescriptor. Some of them can be composite.

Use this implementation of DataSourceRequestExtensions instead of František's:

public static class DataSourceRequestExtensions
{
    /// 

    /// Enable flattened properties in the ViewModel to be used in DataSource.
    /// 
    public static void Deflatten(this DataSourceRequest dataSourceRequest)
    {
        DeflattenFilters(dataSourceRequest.Filters);

        foreach (var sortDescriptor in dataSourceRequest.Sorts)
        {
            sortDescriptor.Member = DeflattenString(sortDescriptor.Member);
        }
    }

    private static void DeflattenFilters(IList filters)
    {
        foreach (var filterDescriptor in filters)
        {
            if (filterDescriptor is CompositeFilterDescriptor)
            {
                var descriptors
                    = (filterDescriptor as CompositeFilterDescriptor).FilterDescriptors;
                DeflattenFilters(descriptors);
            }
            else
            {
                var filter = filterDescriptor as FilterDescriptor;
                filter.Member = DeflattenString(filter.Member);
            }
        }
    }

    private static string DeflattenString(string source)
    {
        return source.Replace('_', '.');
    }
}