C# 反射列表 : Object does not match target type

Question

尝试使用反射将类对象添加到列表中，但是当使用我的类对象作为参数调用 Add 方法时，我得到“对象与目标类型不匹配”

这是相关的代码片段(您现在可以假设 classString = "Processor")

PC fetched = new PC();

// Get the appropriate computer field to write to
FieldInfo field = fetched.GetType().GetField(classString);

// Prepare a container by making a new instance of the reffered class
// "CoreView" is the namespace of the program.
object classContainer = Activator.CreateInstance(Type.GetType("CoreView." + classString));

/*
    classContainer population code
*/

// This is where I get the error. I know that classContainer is definitely
// the correct type for the list it's being added to at this point.
field.FieldType.GetMethod("Add").Invoke(fetched, new[] {classContainer});

那么这是上面代码添加 classContainers 的类的一部分:

public class PC
{
    public List<Processor> Processor = new List<Processor>();
    public List<Motherboard> Motherboard = new List<Motherboard>();
    // Etc...
}

Answer 1

您正在尝试在 PC 上调用 List.Add(Processor) - 您希望在字段的值上调用它 :

field.FieldType.GetMethod("Add").Invoke(field.GetValue(fetched),
                                        new[] {classContainer});

但是，我个人建议您不要拥有这样的公共(public)字段。考虑改用属性。