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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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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9 I8 u  `$ ^( D  H- N) Q' u) y, s' ]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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5 E" W" j2 a( M( N6 g  E1) public string[] Split(params char[] separator)
9 X% @8 ?7 C" k$ G: f6 y: W1 J3 y2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
! M5 I: [1 Y  [/ a) W. p. P4) public string[] Split(string[] separator, StringSplitOptions options)
1 o2 Q9 W- Q7 A: \) Q5) public string[] Split(char[] separator, int count, StringSplitOptions options)
1 W7 @" I1 Y2 e9 [1 i% }& i# Y6) 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";)：

1. public string[] Split(params char[] separator)

程序代码
9 |; Y+ B  m! F( `string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

; n1 G( V& @( @; p* E4 w2. public string[] Split(char[] separator, int count)
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' E; U) \4 ^+ G! }' F+ j8 m 程序代码
  w4 |7 r% C# }2 ?8 a3 qstring[] 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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程序代码
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
& N, ?: @% P( X( Jstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

/ O: z8 v4 |+ Y2 F7 ?1 z2 g4. public string[] Split(string[] separator, StringSplitOptions options)

8 H3 y& S* k2 q5 | 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

; y$ A+ ?- c$ t2 d% e" r5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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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
  T/ [& j- _1 b( |string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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1 Z# z4 c! T0 H% A6 ]6. public string[] Split(string[] separator, int count, StringSplitOptions options)
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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