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

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
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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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9 ~2 }- u$ ~8 d- t8 O0 y0 B程序代码
1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
/ y& m6 v7 J& Y3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
  |. K  j, E# k: r' E( [7 M) i5) public string[] Split(char[] separator, int count, StringSplitOptions options)
! F1 D  q1 ~+ p/ A3 s) y& m( `5 Z6) 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)
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程序代码
8 c+ P7 z% h" N4 {/ Gstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
- l+ I1 E- B& x) t! t5 Kstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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/ |- S% |. A0 ?. Y5 ]: K2. public string[] Split(char[] separator, int count)

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string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
1 w# X7 c7 S( d; X, J3 vstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

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

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string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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* d9 [  b) A- ~1 Q+ l0 @' a4. public string[] Split(string[] separator, StringSplitOptions options)

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
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$ ^! y8 d/ T/ t5. 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
! [# @8 u2 i, Estring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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0 o# M: ]2 l" M6. public string[] Split(string[] separator, int count, StringSplitOptions options)

9 J, Q( I, x1 |% v" e. v代码
, w  u7 [, g% d. N" t. ^' e2 q% t1 sstring[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
" k& x" i$ u; X3 W3 {4 U! O3 M* n6 |string[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素