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
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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
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) E8 M/ P" c6 L! L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
http://www.itwis.com/html/net/c/20100506/8234.html
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' F: {( ^! _6 {程序代码
: W2 `( Z& E  ^3 i) `, D1 v2 A% O1) public string[] Split(params char[] separator)
8 j' E/ s$ F  `4 x2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
, P, ]1 o5 R, |- d: ~/ I0 |& h% G9 A4) public string[] Split(string[] separator, StringSplitOptions options)
* D9 N! Q9 ?9 l5) public string[] Split(char[] separator, int count, StringSplitOptions options)
& C# G' ^3 g$ X! r6) public string[] Split(string[] separator, int count, StringSplitOptions options)

* [6 ?1 m7 D6 j3 W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";)：

1. public string[] Split(params char[] separator)

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string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
+ f: S: q% T: s1 p* H! U( nstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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6 M+ ~+ I6 ^* ]+ Q6 m3 E3 S. L" A& j8 s2. public string[] Split(char[] separator, int count)
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程序代码
9 x/ i/ Y% t% U+ zstring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
" |0 ?. `/ w" e$ f  ~5 b2 Xstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
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2 Z# C5 q1 w6 o; J) L" o3. public string[] Split(char[] separator, StringSplitOptions options)
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$ Z2 J# o4 _( M. K 程序代码
# M6 k3 m2 y4 }6 cstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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: b) W8 T- S# J7 {# @! z; J4. 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
string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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3 d4 e  h  }( x& U% Z) t4 I5. public string[] Split(char[] separator, int count, StringSplitOptions options)

程序代码
& _+ Q3 s( v- _. @! ?' cstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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6. public string[] Split(string[] separator, int count, StringSplitOptions options)

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string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
6 J  c. e3 t3 [* k( istring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素