在Automapper配置文件中使用'IncludeAllDerived”选项标志来解决这个问题。示例代码：

public class BaseClass { public string BaseProperty { get; set; } }

public class DerivedClass : BaseClass { public string DerivedProperty { get; set; } }

public class ViewModel : BaseClass { public string ViewModelProperty { get; set; } }

Mapper.Initialize(cfg => { // This line is the solution to the problem cfg.CreateMap().IncludeAllDerived();

// Additional mappings (if needed)
cfg.CreateMap();

});

// Usage example var derivedClassObject = new DerivedClass { BaseProperty = "Hello", DerivedProperty = "World" };

var viewModelObject = Mapper.Map(derivedClassObject);