How do I sort the dynamic list in c#

问题

function void sortDynamicData(typeOfClass,SortKey)
{
List<dynamic> results = null; //results might be of any type it may contain students data or books data or professors data, hence I took as dynamic
results = services.GetMyresults(typeOfClass); //returns list of dynamic objects

results = results.OrderBy(SortKey).ToList();
 ...
 ...
 ...

}

my question is I want to sort the results based on sortKey Any help would be greatly appreciable.

回答1:

If possible, I think it's better and easier to work with if your data is List of T instead of List of dynamic

In case you cannot change your input data to List:

public List<dynamic> Sort<T>(List<dynamic> input, string property)
{
    var type = typeof(T);   
    var sortProperty = type.GetProperty(property);
    return input.OrderBy(p => sortProperty.GetValue(p, null)).ToList();
}

Usage: you need to provide the type of data in the list, e.g. sort List by Name property in which dynamic is of Person type

var result = Sort<Person>(people, "Name");

================

Update:

In case you cannot provide the type of data, you can try this Sort()

public List<dynamic> Sort(List<dynamic> input, string property)
{   
    return input.OrderBy(p => p.GetType()
                               .GetProperty(property)
                               .GetValue(p, null)).ToList();
}

Usage:

var people = new List<dynamic>
{
    new Person { Name = "Person 5" },
    new Person { Name = "Person 2" },
    new Person { Name = "Person 9" },
    new Person { Name = "Person 1" }
};  

var result = Sort(people, "Name");

回答2:

var final = results.AsEnumerable().OrderBy(x => x[0])

来源：https://stackoverflow.com/questions/27683904/how-do-i-sort-the-dynamic-list-in-c-sharp

标签

list

sorting

dynamic