从基类实例化特定类型的派生类属性

Question

从基类实例化指定类型的派生类属性

样本：

public class TBaseModel{

    public TBaseModel(){
        //here i want to list all dervied class peoperties of type DbSet and Instantiate it here.
    }

}

public class TDataModel : TBaseModel
{
    public DbSet cars {set ; get ;}

    public TDataModel (){
        cars  = new DbSet(); // i don't want to do this
    }

}

Answer 1

解决方案是循环到所有当前类属性并根据属性类类型创建新实例并将新实例设置回当前类。

 public class TBaseClass
    {

    public TBaseClass()
    {

        Type thisClass = this.GetType();
        PropertyInfo[] info = thisClass.GetProperties();
        foreach (var prop in info)
        {
            if (typeof(TDataModel).IsAssignableFrom(prop.PropertyType))
            {
                object newModel = Activator.CreateInstance(prop.PropertyType);
                prop.SetValue(this, newModel, null);
            }


        }

    }
}