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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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
4 `2 O" |6 Y2 Y4 Mhttp://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)
3 H. N- u. h! U( j3) public string[] Split(char[] separator, StringSplitOptions options)
( i9 z/ e: |2 T9 a4) public string[] Split(string[] separator, StringSplitOptions options)
5) public string[] Split(char[] separator, int count, StringSplitOptions options)
" a* @) z8 E, \0 ^7 I6) 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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- t* K# d1 X& ]5 x' v1. public string[] Split(params char[] separator)

程序代码
: J. ]# j% _! n1 Z* Lstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
0 J& S+ j  x' J, Zstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

0 ^& e1 ?. a7 g' T2. public string[] Split(char[] separator, int count)
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程序代码
6 G0 Y' U# j* H0 T! ]  E$ G: C# Pstring[] 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"}
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" Q* r7 s7 ^# f  f5 P; [2 z3. public string[] Split(char[] separator, StringSplitOptions options)

程序代码
) V" U9 o  r5 T  z7 h) S+ H+ qstring[] 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

4. public string[] Split(string[] separator, StringSplitOptions options)
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程序代码
: ?; |  y7 w* T  _# M1 _string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
9 b- ~' K& z, Y/ I6 `! B4 ^string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

! w5 v  i* N3 H) d, O5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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4 W: C1 Z! E# n1 C/ G0 D# b: G 程序代码
! ^9 e3 u3 o7 \# @  [+ gstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

: ^& D# p1 M8 x6. public string[] Split(string[] separator, int count, StringSplitOptions options)
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( Q, G5 M3 X* g2 V/ Y! ]  o8 \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