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

4 _* ~) g7 w2 e$ x& Q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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0 p6 F8 w: v8 B; S2 s. o- l# y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
' ], G0 y8 w9 @$ Whttp://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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程序代码
3 K3 e- L6 u9 p/ n! x1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
7 G  m- r' z  \  R  L3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
2 @7 `) ~9 L3 y( n8 a3 z5) public string[] Split(char[] separator, int count, StringSplitOptions options)
* I! _! C3 Y" G6 _; w; c6 E6) public string[] Split(string[] separator, int count, StringSplitOptions options)
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( K0 Z1 p: C# V5 c) `2 t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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0 t7 }  }( T+ k& K! H1. public string[] Split(params char[] separator)
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程序代码
! N% r9 p7 ~4 X8 r3 ~! Qstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
4 h8 V9 l  w4 f8 ?6 o' d8 Istring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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: ^$ x. Q: T! u) U0 a2. public string[] Split(char[] separator, int count)
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7 c' h: P0 ?. q# B! gstring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
string[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

3. 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
2 |: s" n! `: L9 t7 U2 Q9 Astring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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" X/ V4 P0 ~. H4. public string[] Split(string[] separator, StringSplitOptions options)
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/ f7 N: x/ Z8 H& d" ^0 H6 z3 v2 D 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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4 g! U/ S: y$ E( O/ ? 程序代码
string[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
# i( Y+ y- j1 J- k, K3 m7 gstring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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" @1 h( K  T2 D: v" Y) L6. public string[] Split(string[] separator, int count, StringSplitOptions options)

1 v% k5 H4 b- a$ E4 m# `/ ?代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
# \) Q4 T* O" {$ Zstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素