Consider this structure:
Name
{
public string FirstName { get; set; }
}
Person
{
public Name PersonName { get; set; }
}
I have the name of the FirstName property as a string. Now I want to use this string "FirstName" to get the name of the Person Class at runtime. I'm not sure if this is possible. Does anyone know of a way to achieve this?
Thanks!
This is a really strange requirement. That said, here's how you can do this:
// 1. Define your universe of types.
// If you don't know where to start, you could try all the
// types that have been loaded into the application domain.
var allTypes = from assembly in AppDomain.CurrentDomain.GetAssemblies()
from type in assembly.GetTypes()
select type;
// 2. Search through each type and find ones that have a public
// property named "FirstName" (In your case: the `Name` type).
var typesWithFirstNameProp = new HashSet<Type>
(
from type in allTypes
where type.GetProperty("FirstName") != null
select type
);
// 3. Search through each type and find ones that have at least one
// public property whose type matches one of the types found
// in Step 2 (In your case: the `Person` type).
var result = from type in allTypes
let propertyTypes = type.GetProperties().Select(p => p.PropertyType)
where typesWithFirstNameProp.Overlaps(propertyTypes)
select type;
If all types are in a known one or more assembly, you can search in the assembly:
var types = Assembly.GetExecutingAssembly().GetTypes();
var NameType = types.First(t => t.GetProperty("FirstName") != null);
var PersonType = types.First(t => t.GetProperties.Any(pi => pi.MemberType = NameType));
Person.PersonName.FirstName == "Bob", that somewhere you can have a methodPerson FindPersonByName(string name), feed in "Bob" and it will return you the instance of thePersonclass in memory that was assigned "Bob" previously?FindTypesWithPropertyName("FirstName")and it would return bothtypeof(Name)andtypeof(Person)?