public static SelectList GenericSelectList(AssetManagerContext db, Type entityType
, string property, object selectedvalue)
{
var set = db.Set(entityType);
var query = set.OrderBy(property)
.Select("new(" + property + ")")
.Distinct()
;
SelectList selectlist = new SelectList(query, property, property, selectedvalue);
string selected = selectedvalue.ToStringOrEmpty();
if (!string.IsNullOrWhiteSpace(selected) && !selectlist.Contains(selectedvalue))
{
List<SelectListItem> list = selectlist.ToList();
list.Add(new SelectListItem { Text = selected, Value = selected });
list.Sort((x, y) => x.Text.CompareTo(y.Text));
selectlist = new SelectList(list, "Value", "Text", selectedvalue);
}
return selectlist;
}