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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, e9 f% w' l  o$ w5 m+ F# N% |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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1) public string[] Split(params char[] separator)
% D* L' W0 @. K# w. x) Y6 r( O2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
: |, w" f3 r# r4) public string[] Split(string[] separator, StringSplitOptions options)
5) public string[] Split(char[] separator, int count, StringSplitOptions options)
) ^9 w; W! B) q8 O( y) n5 C$ ~6) public string[] Split(string[] separator, int count, StringSplitOptions options)
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, Q" b0 {/ n! \8 ?& S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
& a1 S8 K) @" S, i8 Ystring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
; w6 H% j5 r$ @$ B6 cstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
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2. public string[] Split(char[] separator, int count)

程序代码
9 V9 C% D0 ~9 \6 Y) {, Ustring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
. |8 f5 w$ ?* a; O2 B, Ostring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
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9 [$ W- f! t" h/ u+ ]0 H3 m3. public string[] Split(char[] separator, StringSplitOptions options)
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程序代码
0 x2 F4 X, [$ ystring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
; x6 W. u/ N, {2 C: b& ~string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
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4. 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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5. public string[] Split(char[] separator, int count, StringSplitOptions options)
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# o) A6 h- e9 x+ y, c0 @6 Rstring[] 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
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6. public string[] Split(string[] separator, int count, StringSplitOptions options)
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- p; ~8 o6 x/ W% ?. ^+ N/ `代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
4 L5 N  L9 y: m* ^! wstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素