日期:2014-05-17 浏览次数:20906 次
最近要写一个网络报表。
众所周知,网络报表是程序员的一大噩梦。
幸运的是,了解了下需求,然后去网络上大概看了下报表相关的信息。
感觉微软自带的RDLC报表能完全满足需求了。
不过,受伤的总是我。
老大一句:“要做成组件,下次调用直接拖拉就行,不需要手动操作!”
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请问:天黑是神马感觉?!
这句话的意思就是要完全动态生成报表(不了解rdlc报表的童鞋们去操作下试试就知道了)。
里面要用到的技术,我大概想了一下。
主要就是XML的架构定义和序列号,反序列话。其他的没什么。不过,就这2个技术,让我感觉顿时落入了地狱(两个我都不熟悉。)。
没办法,只能硬着头皮搞了。
第一个遇到的问题就是c#特性机制了。
稍微看了下,懂了,就先记录下一些自认为经典的例子吧(2个小时前,我连这个[]叫特性都不知道,或者说都没怎么见过这个运算符这个用。2个小时看了几个代码,尤其是下面示例的代码,就懂了!)。
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不多说,如下:
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { BoardingCheckAttribute boardingCheck = null; object[] customAttributes = typeof(HumanPropertyBase).GetCustomAttributes(true); Console.WriteLine(typeof(HumanPropertyBase).IsSerializable); foreach (System.Attribute attribute in customAttributes) { if (attribute is BoardingCheckAttribute) { boardingCheck = attribute as BoardingCheckAttribute; Console.WriteLine(boardingCheck.Name + "'s ID is " + boardingCheck.ID + ", he/she wants to " + boardingCheck.Destination + " from " + boardingCheck.Departure + " by the plane " + boardingCheck.FlightNumber + ", his/her position is " + boardingCheck.PositionNumber + "."); } } Console.ReadLine(); } } [Serializable] [BoardingCheckAttribute("123","louis",22,12,"aaaa","ccccc")] public class HumanPropertyBase { public string Name { get; set; } public int Age { get; set; } public int Gender { get; set; } [Obsolete("I'm so old, don't kill me!", true)] public void Run(int speed) { // Running is good for health. } } public class BoardingCheckAttribute : Attribute { public string ID { get; private set; } public string Name { get; private set; } public int FlightNumber { get; private set; } public int PositionNumber { get; private set; } public string Departure { get; private set; } public string Destination { get; private set; } public BoardingCheckAttribute(string id, string name, int flightNumber, int positionNumber, string departure, string destination) { this.ID = id; this.Name = name; this.FlightNumber = flightNumber; this.PositionNumber = positionNumber; this.Departure = departure; this.Destination = destination; } } }
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[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Struct, AllowMultiple = true) // multiuse attribute ] public class Author : System.Attribute { string name; public double version; public Author(string name) { this.name = name; version = 1.0; // Default value } public string GetName() { return name; } } [Author("H. Ackerman")] public class FirstClass { // ... } // No Author attribute public class SecondClass { // ... } [Author("H. Ackerman"), Author("M. Knott", version = 2.0)] public class ThirdClass { // ... } class TestAuthorAttribute { static void Main() { PrintAuthorInfo(typeof(FirstClass)); PrintAuthorInfo(typeof(SecondClass)); PrintAuthorInfo(typeof(ThirdClass)); } private static void PrintAuthorInfo(Sy