获取对象属性的描述值

来源：互联网发布：代购知乎编辑：程序博客网时间：2024/06/03 22:41

   public class GetModelProperty    {       public static  string GetPropertyDesc(Type objectType, string propertyName)       {           try           {               var first = objectType.GetProperty(propertyName).GetCustomAttributes(typeof(DataFieldAttribute), false).FirstOrDefault(); //objectType.GetProperty(propertyName).GetCustomAttributes(typeof(DataFieldAttribute),false).FirstOrDefault();               return ((DataFieldAttribute)first).DescName;           }           catch (Exception ex)           {               ErrorLog.Write("分解对象值出错",ex);           }           return "未知属性名称";       }       public static string GetPropertyName<T>(Expression<Func<T, object>> expr)       {           var rtn = "";           if (expr.Body is UnaryExpression)           {               rtn = ((MemberExpression)((UnaryExpression)expr.Body).Operand).Member.Name;           }           else if (expr.Body is MemberExpression)           {               rtn = ((MemberExpression)expr.Body).Member.Name;           }           else if (expr.Body is ParameterExpression)           {               rtn = ((ParameterExpression)expr.Body).Type.Name;           }           return rtn;       }      }

调用：

  GetModelProperty target = new GetModelProperty(); // TODO: 初始化为适当的值            FloorsTO m=new FloorsTO();            Type objectType = typeof(FloorsTO); // TODO: 初始化为适当的值            string propertyName = "";            string expected = string.Empty; // TODO: 初始化为适当的值            string actual;            actual = GetModelProperty.GetPropertyName<FloorsTO>(c => c.TotalPower);            var ddd = GetModelProperty.GetPropertyDesc(typeof(FloorsTO), actual);            Assert.AreEqual(expected, actual);            Assert.Inconclusive("验证此测试方法的正确性。");

前提，要自己定义一个属性：

   public class DataFieldAttribute:Attribute    {       public string DescName { get; set; }    }