通过泛型方式获取不同集合属性的拼接字符串

今天写代码时遇到了一个问题，假如有两个不同类型的集合，如何通过一个方法拼接集合中的某个属性成为一个字符串

尝试了一种泛型的写法，记录一下

/// <summary>
/// 主方法
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
    List<Animals> listA = new List<Animals>
    {
        new Animals { AnimalsName = "Dog", Sex = "Male" },
        new Animals { AnimalsName = "Cat", Sex = "Female" },
        new Animals { AnimalsName = "Monkey", Sex = "Male" }
    };

    List<Plant> listB = new List<Plant>
    {
        new Plant { PlantName = "Rose", PlantColour = "Red" },
        new Plant { PlantName = "Grass", PlantColour = "Green" },
        new Plant { PlantName = "Sunflower", PlantColour = "Yellow" }
    };

    Console.WriteLine(GetStr(listA));   //输出 Dog,Cat,Monkey

    Console.WriteLine(GetStr(listB));   //输出 Rose,Grass,Sunflower

    Console.ReadKey();
}

/// <summary>
/// 获取拼接字符串
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="list">传入集合</param>
/// <returns></returns>
public static string GetStr<T>(List<T> list) where T : class
{
    string str = string.Empty;

    //集合为空时，直接返回
    if (list.Count == 0)
        return "";

    //获取实体集合类型
    Type objType = typeof(T);   
    string field = string.Empty;

    //根据不同实体类型选择不同的属性名称
    switch (objType.Name)
    {
        case nameof(Animals):
            field = "AnimalsName";
            break;

        case nameof(Plant):
            field = "PlantName";
            break;
    }

    //获取对应参数名的参数信息
    PropertyInfo proInfo = objType.GetProperty(field);

    //循环拼接字符串
    foreach (var item in list)
    {
        str += proInfo?.GetValue(item) + ",";
    }

    //去除最后一位 ','
    return str.Remove(str.Length - 1);
}

/// <summary>
/// 动物类
/// </summary>
public class Animals
{   
    public string AnimalsName { get; set; }

    public string Sex { get; set; }
}

/// <summary>
/// 植物类
/// </summary>
public class Plant  
{
    public string PlantName { get; set; }

    public string PlantColour { get; set; }
}

还有很多写法不足的地方，欢迎各位大佬来指正，或者还有其他更好的方法也可以来讨论一下