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C# List<T> 泛型方法根据字段名取值及Object的取值

      /// <summary>
        /// 泛型List<T>取值
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_ListTGetValue_Click(object sender, EventArgs e)
        {
            List<ObjectClass> list = new List<ObjectClass>();
            list.Add(new ObjectClass
            {
                Name = "测试1",
                Sex = ""
            });
            list.Add(new ObjectClass
            {
                Name = "测试2",
                Sex = ""
            });
            var res = GetObj<ObjectClass>(list, "Name");
            txt_WordsExtract.Text = res;

        }
        /// <summary>
        /// 泛型方法获取List<T>的值
        /// </summary>
        /// <typeparam name="T">泛型实体类</typeparam>
        /// <param name="list"></param>
        /// <param name="code">需查找的字段名称</param>
        /// <returns></returns>
        public string GetObj<T>(List<T> list, string code)
        {
            string res = string.Empty;
            foreach (T item in list)
            {
                //将对象转为Type在获取属性,最后获取属性值,针对Object类型取值也可以使用这种方式
                var codeValue = item.GetType().GetProperty(code).GetValue(item);
                res += $"{codeValue},";
            }
            return res.TrimEnd(',');
        }
        public class ObjectClass
        {
            public string Name { get; set; }
            public string Sex { get; set; }
        }

结果如下

此方法仅个人记录,如果有更好的方法,欢迎指正

 

posted @ 2023-05-05 15:25  流纹  阅读(236)  评论(0编辑  收藏  举报