反射常用功能-持续更新

反射判断 某个对象 是否 是泛型集合的类型

 public bool isCollection(object o) 

    { 

        return typeof(ICollection).IsAssignableFrom(o.GetType()) 

            || typeof(ICollection<>).IsAssignableFrom(o.GetType()); 

    } 

 获取类实例

        public static object Load(string assembly, string className)
        {
            return Assembly.Load(assembly).CreateInstance(className);
        }

 

获取指定属性

        public static PropertyInfo GetPropertyByName(Type type, string propertyName)
        {
            return type.GetProperty(propertyName, BindingFlags.Public
                | BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.GetProperty | BindingFlags.FlattenHierarchy);
        }

 

 反射创建泛型集合

        public static IList CreateList(Type listType)
        {
            //Type type = listType;
            //反射创建普通对象
            object o = Activator.CreateInstance(listType);
            //反射创建泛型集合
            Type generic = typeof(List<>);
            Type[] typeArgs = { listType };
            generic = generic.MakeGenericType(typeArgs);
            return Activator.CreateInstance(generic) as IList;
        }

 

反射调用方法

                    Type dataType = Type.GetType(ClassName);
                    MethodInfo parseMethod = dataType.GetMethod("Parse", BindingFlags.Public | BindingFlags.IgnoreCase
                        | BindingFlags.Static | BindingFlags.FlattenHierarchy, null, new Type[] { typeof(string) }, null);

 反射获取某个属性集合(如获取DataTable的columns属性,并且遍历它)

                DataTable dtSource = (DataTable)data;
                Type type = dtSource.GetType();
                PropertyInfo pi = type.GetProperty("Columns");
                IEnumerable listObject = (IEnumerable)pi.GetValue(dtSource, null); 

 反射设置属性

        public static void SetPropertyValue(this PropertyInfo property, object target, object value)
        {
            if (null != property && property.CanWrite)
            {
                if (value.GetType() == typeof(string))
                {
                    // 对换行符进行转换
                    value = value.ToString().Replace("\\r", "\r").
                        Replace("\\n", "\n").Replace("<br>", "\n");
                }
                value = GetObjectInstance(property.PropertyType, value.ToString());
                property.SetValue(target, value, null);
            }
        }