public string AddOrUpdate(string element)
{
var parse = Parse(element);
if (parse == null)
{
return(ToString());
}
var sort = new SortCollection <TSource>(ToString());
var property = sort.Properties.Find(x => x.PropertyName == parse.PropertyName);
if (property == null)
{
sort.Properties.Add(parse);
return(sort.ToString());
}
property.Direction =
property.Direction == ListSortDirection.Ascending
? ListSortDirection.Descending
: ListSortDirection.Ascending;
return(sort.ToString());
}
public string Remove(string element)
{
var parse = Parse(element);
if (parse == null)
{
return(ToString());
}
var sort = new SortCollection <TSource>(ToString());
var property = sort.Properties.Find(x => x.PropertyName == parse.PropertyName);
if (property != null)
{
sort.Properties.Remove(property);
}
return(sort.ToString());
}
public static IQueryable <TSource> OrderBy <TSource>(this IQueryable <TSource> queryable, string sorts, out SortCollection <TSource> sortCollection)
{
sortCollection = new SortCollection <TSource>(sorts);
return(sortCollection.Apply(queryable));
}
public static IQueryable <TSource> OrderBy <TSource>(this IQueryable <TSource> queryable, params string[] sorts)
{
var sort = new SortCollection <TSource>(sorts);
return(sort.Apply(queryable));
}