升级程序开发——读Web.config、执行Sql脚本

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当程序数据库发生修改后，需要执行sql脚本，以修正数据库。数据库连接字符串在web.config文件中，所以此部分设计两部分的内容：读web.config；执行sql脚本文件

读web.config是以读xml文件的方式，找到connectingstring的value，对字符串进行切割、取子字符串的方式获取访问数据库的关键信息：数据库服务器名、数据库名、访问用户名、访问密码

对于脚本文件的执行，通过“GO”来获得脚本文件中包含的需要一次性执行的sql代码，然后再执行所有的代码块就好了

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这里是参考的这篇文章的做法，但是，这篇文章是用C#执行sql文件，再将连接字符串写到web.config中，和我的应用有些差别
http://blog.sina.com.cn/s/blog_4a50d85b0100lzi2.html

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下面的这篇文章，介绍了Split方法的各种重载的应用，并有例子，字符串切割的话可以看看
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程序代码
7 O2 r( o& E7 k; H. [9 K4 n$ G5 C1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
8 O' Q# F% I; s# [3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
8 i: Y% ?* ]6 X1 ~- O3 s5) public string[] Split(char[] separator, int count, StringSplitOptions options)
. b8 i: H: t, l! c3 `9 E6) public string[] Split(string[] separator, int count, StringSplitOptions options)

% f0 h2 S4 x! u/ a- P+ v3 k( o下边我们通过一些实例来说明下怎么使用(以下string words = "1,2.3,,4";)：
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& Y/ t& \5 Z3 W7 F: j1. public string[] Split(params char[] separator)
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: s( \9 k$ O- s3 ?string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

2. public string[] Split(char[] separator, int count)

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string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
- i, u+ C" M' G& Ustring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

' z% ]3 }' e% a! v- U0 i3. public string[] Split(char[] separator, StringSplitOptions options)
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string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
4 }0 c8 p5 \' Y, i* x" ~4 V8 estring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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2 u1 s7 F8 i, @; G$ m9 J. E4. public string[] Split(string[] separator, StringSplitOptions options)
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string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
% ?: v6 m- i, sstring[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

  u$ r3 i, W& ~8 ]. s( m5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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string[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
5 }, O  \8 B/ U; E/ x3 P( t3 H) X3 Astring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

6. public string[] Split(string[] separator, int count, StringSplitOptions options)
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代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
string[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素