通过反射获得属性值

2017-10-14 20:23:28  访问(1672) 赞(0) 踩(0)

        /// <summary>
        /// 获得属性值 - 如果找不到对应的_propertyName，抛出异常
        /// </summary>
        /// <param name="_propertyName">字段名(如:TheName)/大小写模糊</param>
        /// <returns></returns>
        public virtual object GetPropertyValue
            (
                string _propertyName
            )
        {
            Type thisType = this.GetType();

            PropertyInfo info = thisType.GetProperty
                (
                    _propertyName,
                    BindingFlags.Public | BindingFlags.GetProperty | BindingFlags.IgnoreCase | BindingFlags.Instance
                );

            if (info == null)
            {

                throw new Exception
                    (
                        "方法："
                        + MethodBase.GetCurrentMethod().ReflectedType.FullName
                        + " "
                        + MethodBase.GetCurrentMethod().ToString()
                        + " 发生异常："
                        + "PropertyInfo info = thisType.GetProperty(_propertyName[" + _propertyName + "]);"
                    );
            }

            return info.GetValue(this, null);
        }

        /// <summary>
        /// 获得属性值 - 如果找不到对应的_propertyName，throwException属性判断是否抛出异常
        /// </summary>
        /// <param name="_propertyName">字段名(如:TheName)/大小写模糊</param>
        /// <param name="throwException">找不到记录是否抛出异常</param>
        /// <param name="defaultValue">如果不抛出异常，默认返回值</param>
        /// <returns></returns>
        public virtual object GetPropertyValue
            (
                string _propertyName,
                bool throwException,
                object defaultValue
            )
        {
            Type thisType = this.GetType();

            PropertyInfo info = thisType.GetProperty
                (
                    _propertyName,
                    BindingFlags.Public | BindingFlags.GetProperty | BindingFlags.IgnoreCase | BindingFlags.Instance
                );

            if (info == null)
            {
                if (throwException)
                {
                    throw new Exception
                        (
                            "方法："
                            + MethodBase.GetCurrentMethod().ReflectedType.FullName
                            + " "
                            + MethodBase.GetCurrentMethod().ToString()
                            + " 发生异常："
                            + "PropertyInfo info = thisType.GetProperty(_propertyName[" + _propertyName + "]);"
                        );
                }

                return defaultValue;
            }

            return info.GetValue(this, null);
        }

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