如何在c#中对动态列表进行排序

时间:2014-12-29 05:37:11

标签: c# list sorting dynamic

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();
 ...
 ...
 ...

}

我的问题是我想基于sortKey对结果进行排序 任何帮助都会非常明显。

2 个答案:

答案 0 :(得分:14)

如果可能的话,如果您的数据是T列表而不是动态列表,我认为它更好,更容易使用

如果您无法将输入数据更改为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();
}

用法:您需要在列表中提供数据类型,例如sort by Name属性,其中dynamic是Person type

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

=====

<强>更新

如果您无法提供数据类型,可以尝试使用Sort()

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

用法:

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");

答案 1 :(得分:0)

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