c# - Unity3d error CS1061 : Type x does not contain a definition for y. 但是确实如此吗？

Question

我遇到了上述非常简单的错误。我以为我会很快修复它，但即使经过相当多的搜索，我也无法终生找出问题所在。我有以下界面:

public interface ITemperatureEmitter
{
    float CurrentTemperatureAddon { get; }
}

我在另外两个(暂时为空)接口(interface)中实现了这个:

public interface ITemperatureEmitterEnvironment : ITemperatureEmitter

public interface ITemperatureEmitterSphere : ITemperatureEmitter

随后我在下面的类中使用了这三个接口(interface):

using System.Collections.Generic;
using UnityEngine;

public class TemperatureReceiver : MonoBehaviour, ITemperatureReceiver
{
    public float PerceivedTemperature;

    // Serialized for debug purposes
    [SerializeField] private List<ITemperatureEmitterSphere> temperatureEmitterSpheres;
    [SerializeField] private List<ITemperatureEmitterEnvironment> temperatureEmitterEnvironments;
    [SerializeField] private float environmentTemperature;
    [SerializeField] private float temperatureToModifyBy;
    [SerializeField] private float currentTemperatureAddon;
    [SerializeField] private float appliedTemperatureAddon;
    [SerializeField] private float totalTemperatureAddon;

    private void Update()
    {
        UpdatePerceivedTemperature();
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.GetComponent<ITemperatureEmitterSphere>() != null)
        {
            temperatureEmitterSpheres.Add(other.GetComponent<ITemperatureEmitterSphere>());
        }
        else if (other.GetComponent<ITemperatureEmitterEnvironment>() != null)
        {
            temperatureEmitterEnvironments.Add(other.GetComponent<ITemperatureEmitterEnvironment>());
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.GetComponent<ITemperatureEmitterSphere>() != null)
        {
            temperatureEmitterSpheres.Remove(other.GetComponent<ITemperatureEmitterSphere>());
        }
        else if (other.GetComponent<ITemperatureEmitterEnvironment>() != null)
        {
            temperatureEmitterEnvironments.Remove(other.GetComponent<ITemperatureEmitterEnvironment>());
        }
    }

    private void UpdatePerceivedTemperature()
    {
        ModifyPerceivedTemperature(temperatureEmitterSpheres);
        ModifyPerceivedTemperature(temperatureEmitterEnvironments);
    }

    private void ModifyPerceivedTemperature<ITemperatureEmitter>(List<ITemperatureEmitter> list)
    {
        if (list.Count > 0)
        {
            foreach (var item in list)
            {
                currentTemperatureAddon += item.CurrentTemperatureAddon;
            }
            currentTemperatureAddon = currentTemperatureAddon / list.Count;
            appliedTemperatureAddon = PerceivedTemperature;
            temperatureToModifyBy = currentTemperatureAddon = appliedTemperatureAddon;
            PerceivedTemperature += temperatureToModifyBy;
        }
    }
}

现在 ModifyPercievedTemperature 方法中的 item.CurrentTemperatureAddon 发出“error CS1061: Type ITemperatureEmitter does not contain a definition for CurrentTemperatureAddon 并且找不到类型为 ITemperatureEmitter 的扩展方法 CurrentTemperatureAddon。是否缺少程序集引用？

ITemperatureEmitter 确实包含了 CurrentTemperatureAddonm 的定义...有人知道这里发生了什么吗？

Answer 1

您误报了 ModifyPerceivedTemperature

private void ModifyPerceivedTemperature<ITemperatureEmitter>(List<ITemperatureEmitter> list)

在这里你使用ITemperatureEmitter作为通用参数的名称。所以在这个范围内，它不再意味着interface ITemperatureEmitter , 但通用参数。

只需删除泛型参数，它无论如何都不会被使用:

private void ModifyPerceivedTemperature(List<ITemperatureEmitter> list)

现在你只需要一个 List<ITemperatureEmitter> list作为参数和你所有的var item in list确实是 ITemperatureEmitter 类型，而不是通用类型。