///
 
///a generic class 
///
 
/// 
Public interface IClass Where TEntity: class {} 

Public class Entity {} 

Public class ClassEntity 
{
//how to know the type of the Data, it is IClass 
Public IClass Data {get; The set; } 
Public string Str {get; The set; } 
} 

Class Program 
{
The static void Main (string [] args) 
{
//how to determine which properties of ClassEntity is IClass 
Var entityType=typeof (ClassEntity); 
Var props=entityType. The GetProperties (); 
//here is my own writing, feeling a little trouble, do not know to have a simple way to 
The foreach (var prop in props) 
{
Var typeArgs=prop. PropertyType. GenericTypeArguments; 
If (typeArgs. The Count ()==1) 
{
Var args=typeArgs. Single (); 
Var tableType=typeof (IClass<>) MakeGenericType (arg); 
If (tableType. IsAssignableFrom (prop. PropertyType)) 
{
Console. WriteLine ($" PropName={prop. Name} "); 
} 

} 
} 
The Console. ReadLine (); 
} 
}