在通用函数中将类传递为参数

Question

I'm using this neat classes to map data tables from a MySQL database into objects. Now I would like to write a generic function to return a list for a variety of different classes so I could call:

List<Person> persons = ReadDataTable<Person>();
List<Car> persons = ReadDataTable<Car>();

and many more classes.

But I don't unterstand how to create the object DataNamesMapper in my generic function:

public List<T> ReadDataTable<T>()
{   
  List<T> parsedObjects = new List<T>();       
  DataNamesMapper<typeof(T)> mapper = new DataNamesMapper<typeof(T)> (); //<- error
  DataNamesMapper<Person> mapper = new DataNamesMapper<Person> (); //<- no error, non-generic
  //...query data, map and fill list
  return parsedObjects;
}

DataMapper is defined:

public class DataNamesMapper<TEntity> where TEntity : class, new()
{
...
}

Is this possible?

Answer 1

The DataNamesMapper is open type. To make it closed to T you need to use this syntax:

DataNamesMapper<T> mapper = new DataNamesMapper<T>();