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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  q& t6 i% A0 [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

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
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0 N3 |4 `2 K0 D8 w6 I1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
* X1 @: D/ [8 l$ W! L- _# l+ g  q3) 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)
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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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+ \4 M* [, n6 R# L6 D: o1. public string[] Split(params char[] separator)

程序代码
string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
1 A" h4 p( [# B4 |6 F8 Qstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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2. public string[] Split(char[] separator, int count)

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' r2 Y( @1 T% X7 }4 \0 M4 sstring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
. Q1 ^- C! F& Mstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
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! x" U5 G8 G7 W, O" h+ W/ q3. public string[] Split(char[] separator, StringSplitOptions options)

5 T" o3 p5 ?+ w 程序代码
) `: S- `$ X' @/ v0 hstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
; C$ z6 J* x# e$ |+ u6 @3 t  pstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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* s) q& }, `/ A$ w" Z! o* p4. public string[] Split(string[] separator, StringSplitOptions options)
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程序代码
4 t9 G  H6 }% s: G) Z( 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

5 R+ x( {5 \5 D, q  B5. public string[] Split(char[] separator, int count, StringSplitOptions options)

程序代码
* N, E! g- {. V3 x' Rstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
. O7 |' o# a* ~- q) w0 ~  N* K( _string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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2 c# r0 ?3 t* e% ^& M6. 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
! s: q/ k8 t, t) ~string[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素