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
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8 k. E0 p  E* {" ~7 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
. x4 X1 D/ M! S4 `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
  S1 W0 @8 B$ h% d) Jhttp://www.itwis.com/html/net/c/20100506/8234.html

程序代码
1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
9 p- W0 n: J4 K+ `3) public string[] Split(char[] separator, StringSplitOptions options)
6 B5 p8 |# i* K4) public string[] Split(string[] separator, StringSplitOptions options)
. {; _# J& \0 c# m, i  j) z$ |0 i5) public string[] Split(char[] separator, int count, StringSplitOptions options)
7 e( `! b2 i8 F1 d. w- q% [6) public string[] Split(string[] separator, int count, StringSplitOptions options)
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. E5 M7 z! E0 |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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! S+ c8 j" Q8 |6 Gstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
  U  h) A$ w: P! S* _* C% Nstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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: [3 A* s% I; F$ W# n4 M2. public string[] Split(char[] separator, int count)

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string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
; c1 _1 g. W1 W% jstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

3. public string[] Split(char[] separator, StringSplitOptions options)

程序代码
  [$ h; T9 u2 ~string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
* }" `4 G: @: |4 ]; E. [) P& v' O% ^( astring[] 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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0 N: a* d+ J% [0 q 程序代码
% D2 h: d9 U+ x. V, M% A. Nstring[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
2 u& s( n- I. R* U3 q3 M1 r7 xstring[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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- P: K( `. p7 v/ i/ y5 X3 W5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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& @( a! y7 ~! K, Z! @5 w" @ 程序代码
% j" I" j7 l5 M; gstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
/ N" r- M! B; U$ [5 x, zstring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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  y# E% F; g. k9 ^3 h) M9 U6. public string[] Split(string[] separator, int count, StringSplitOptions options)

, c3 Y; {7 m& T  |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