public static IQueryable <T> OrderBy <T>(this IQueryable <T> query, ISortingCriteria sortingCriteria)
{
return(query.OrderByPropertyName(sortingCriteria.SortColunName, sortingCriteria.Ascending));
}
// Took inspiration from here on how to accomplish this
// https://www.c-sharpcorner.com/article/dynamic-sorting-orderby-based-on-user-preference/
public static IQueryable <T> OrderBySortingCriteria <T>(this IQueryable <T> source, ISortingCriteria sortingCriteria, bool isNested = false)
{
if (string.IsNullOrEmpty(sortingCriteria.PropertyName))
{
return(source);
}
var parameter = Expression.Parameter(source.ElementType, "");
var property = Expression.Property(parameter, sortingCriteria.PropertyName);
var lambda = Expression.Lambda(property, parameter);
var methodName = $"{(!isNested ? "Order" : "Then")}By{(sortingCriteria.IsAscending ? "" : "Descending")}";
var methodCallExpression = Expression.Call(typeof(Queryable), methodName,
new [] { source.ElementType, property.Type },
source.Expression, Expression.Quote(lambda));
return(source.Provider.CreateQuery <T>(methodCallExpression));
}
