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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6 H: t3 w/ J& Q! W+ H; P4 U8 ^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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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
  S' T5 A) ^/ p, Hhttp://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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3 C) H7 b& w6 V; }; O9 K, T2 ~" K程序代码
1) public string[] Split(params char[] separator)
8 w) f" C3 v' m* A: C2) public string[] Split(char[] separator, int count)
1 v. ~9 V+ }2 X. O3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
2 w9 C" Z! @" d+ y5) public string[] Split(char[] separator, int count, StringSplitOptions options)
2 J$ M  O$ C( F* C/ H) j/ ?6) public string[] Split(string[] separator, int count, StringSplitOptions options)
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0 b1 D7 A. k/ K, F8 |6 k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";)：

' {5 Z: }! A5 D. s2 N, Q9 a- I1. public string[] Split(params char[] separator)
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程序代码
* u; T  |( o: I( fstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
! x) d) |% V' k: N2 Sstring[] 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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5 C) s& b7 O! ^: q  @8 {# vstring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
0 S$ T( i& j* e2 O( Q) a; ?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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6 ~5 w/ M1 w( k/ T 程序代码
/ K7 a6 g( l/ W3 ^( `* k4 L+ R( Lstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
' @4 K# }( _: C2 x- F/ J! Qstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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. Y) z3 I& w) a  M& q; r1 l4. public string[] Split(string[] separator, StringSplitOptions options)
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/ T2 ?/ `7 Z6 v4 f( n0 o" r 程序代码
string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
/ a+ t4 l. A/ `: j& q9 j2 _string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

5. public string[] Split(char[] separator, int count, StringSplitOptions options)

* x* a% m+ y" D# ^$ ~- w  u- I 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
1 m2 J8 h. c: b0 U$ P& v+ a- d6 `string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

) C  `2 I6 @) ~6. public string[] Split(string[] separator, int count, StringSplitOptions options)
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0 O( v5 Y- j, ~3 a2 P0 T. J$ j代码
- O* Y+ I9 H" q9 w5 ~) _# ostring[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
3 w* d2 q8 L8 |" n; |  Rstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素