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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! G2 f5 ^5 `) \; \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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7 ?- C  w- g9 v+ p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
" Z9 [) g) F9 w& s2 ]7 ]- ]+ g( Thttp://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

# J' J. s) [. [- f. y" ~4 K1 S程序代码
1) public string[] Split(params char[] separator)
* N! B. n& r4 W% C2) public string[] Split(char[] separator, int count)
6 k: s& y2 ]5 U9 k5 i; o  G3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
5) public string[] Split(char[] separator, int count, StringSplitOptions options)
6) public string[] Split(string[] separator, int count, StringSplitOptions options)

# l$ H* D- s, G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)

0 J/ _% q: O; A+ M 程序代码
. r5 h& V# @" x2 e4 mstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

& f: n) W; i5 {5 _. ]0 E% X2. public string[] Split(char[] separator, int count)
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/ I3 F0 s: \0 ~( t 程序代码
  L, s& f$ }1 v) w0 z' Ustring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
+ h& S& Y. v* s; g2 X4 Y  Qstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

( @! ?" a6 m; E: y2 r3. public string[] Split(char[] separator, StringSplitOptions options)
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程序代码
+ G- {' d9 `& F) u$ {, Vstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
% ~! \% f6 G/ f1 \; Q! Tstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

* P" i) [; y0 V2 v. W9 ?+ v. j4 c4. public string[] Split(string[] separator, StringSplitOptions options)
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程序代码
4 @4 G! ^# R, y4 @5 fstring[] 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

3 W* ]- J- F: x7 s# |& s* p/ o+ Y6 t1 ^5. public string[] Split(char[] separator, int count, StringSplitOptions options)

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
string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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3 y0 D( l5 S5 _& e6. public string[] Split(string[] separator, int count, StringSplitOptions options)

代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
3 E6 d9 [$ K  q7 x+ K' t: |& Wstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素