日期:2014-05-17 浏览次数:21079 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!”
...
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!)。
?
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;
}
}
}
?
?
[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