private static IList<T> IListOrderBy<T>(IList<T> list, string propertyName) where T : new()
{
if (list == null || list.Count == 0)
{
return list;
}
Type elementType = Queryable.AsQueryable(list).ElementType;
//PropertyInfo propertyInfo = elementType.GetProperty(propertyName);
ParameterExpression parameter = Expression.Parameter(elementType, "");
Expression body = Expression.PropertyOrField(parameter, propertyName);
Expression sourceExpression = list.AsQueryable().Expression;
//Type sourcePropertyType = propertyInfo.PropertyType;
var selector = Expression.Lambda(body, parameter);
Expression lambda = Expression.Call(typeof(Queryable), "OrderBy", new Type[]
{
elementType,
selector.Body.Type
}, sourceExpression, selector);
//Expression lambda = Expression.Call(typeof(Queryable), "OrderBy", new Type[]
//{
// elementType,
// sourcePropertyType
//}, sourceExpression, Expression.Lambda(body, parameter));
var query = list.AsQueryable().Provider.CreateQuery<T>(lambda);
return query.ToList<T>(); }
