我试图理解LINQ中的表达式，让我感到很疯狂。任何帮助都将不胜感激（即使是告诉我我完全错了）。
假设我有三个类：
public class Person
{
public string Name { get; set;}
public IEnumerable<PersonLocation> Locations { get; set;}
public IEnumerable<PersonEducation> Educations { get; set:}
}
public class PersonLocation
{
public string Name { get; set;}
public string Floor { get; set;}
public string Extension { get; set;}
}
public class PersonEducation
{
public string SchoolName { get; set;}
public string GraduationYear { get; set;}
}
我正在尝试创建一个方法，它接收一个字符串，比如Locations.Name或Locations.Floor，或Educations.SchoolName，然后创建一个动态的linq查询。
IEnumerable<Person> people = GetAllPeople();
GetFilteredResults(people, "Location.Name", "San Francisco");
GetFilteredResults(people, "Location.Floor", "17");
GetFilteredResults(people, "Educations.SchoolName", "Northwestern");
这个 GetFilteredResults(IEnumerable<Person> people, string ModelProperty, string Value) 方法应该创建一个表达式，大致相当于 people.Where(p => p.Locations.Any(pl => pl.Name == Value);
如果ModelProperty是字符串，我已经可以工作了，即 people.Where(p => p.Name == Value) 看起来像这样：
string[] modelPropertyParts = ModelProperty.Split('.');
var prop = typeof(Person).GetProperty(modelPropertyParts[0]);
var sourceParam = Expression.Parameter(typeof(Person), "person");
var expression = Expression.Equal(Expression.PropertyOrField(sourceParam, modelPropertyParts[0]), Expression.Constant(option.Name));
var whereSelector = Expression.Lambda<Func<Person, bool>>(orExp, sourceParam);
return people.Where(whereSelector.Compile());
以下是我尝试创建一个IEnumerable类型的代码，但我无法将内部的Any方法（看起来是正确的）与外部的Where方法结合起来：
/*i.e. modelPropertyParts[0] = Locations & modelPropertyParts[1] = Name */
string[] modelPropertyParts = ModelProperty.Split('.');
var interiorProperty = prop.PropertyType.GetGenericArguments()[0];
var interiorParameter = Expression.Parameter(interiorProperty, "personlocation");
var interiorField = Expression.PropertyOrField(interiorParameter, modelPropertyParts[1]);
var interiorExpression = Expression.Equal(interiorField, Expression.Constant(Value));
var innerLambda = Expression.Lambda<Func<PersonLocation, bool>>(interiorExpression, interiorParameter);
var outerParameter = Expression.Parameter(typeof(Person), "person");
var outerField = Expression.PropertyOrField(outerParameter, modelPropertyParts[0]);
var outerExpression = ??
var outerLambda == ??
return people.Where(outerLambda.Compile());