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

: U1 `( z; `) U: D& l  M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
7 H  ~0 @8 D  d2 _. I8 zhttp://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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# C* `. P  a/ D( @7 O6 o1) public string[] Split(params char[] separator)
1 W/ T' y" y& j1 F- u/ i" H2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
$ f4 H+ K# M. R9 d* z: y' z- g4) public string[] Split(string[] separator, StringSplitOptions options)
: ]2 ?) L0 B' g0 v  ]5) public string[] Split(char[] separator, int count, StringSplitOptions options)
6) public string[] Split(string[] separator, int count, StringSplitOptions options)

1 I. {8 L" z& e$ C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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. b- p) T) J% C2 w1. public string[] Split(params char[] separator)
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程序代码
2 e( r2 W9 l/ i- L( ystring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
) Z1 `& E- L6 Gstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

2. public string[] Split(char[] separator, int count)
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程序代码
1 N1 ]& S( n: C' D( X7 \string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
8 p- Y/ @: J; s; @string[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
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3. public string[] Split(char[] separator, StringSplitOptions options)
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/ L: W# Q, ?, x: {) Rstring[] 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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4. public string[] Split(string[] separator, StringSplitOptions options)
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程序代码
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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5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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% h5 |9 z- w- L! nstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
- ~" c- G! c8 w9 x$ D1 I+ zstring[] 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)

+ \) F0 o$ J: w. T代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
: k1 W7 W* O, V. p1 dstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素