升级程序开发——读Web.config、执行Sql脚本

Star

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
8 H. X5 x2 C+ c) G: e
* w. r- N7 f& W& h! u! z  `* f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
% z7 A. ?* |# V* u" T; I6 H5 W# W
0 s* Z4 b* V) [2 k8 G# K! T) T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

Star

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
8 W( p, c7 n4 `, Z8 Ahttp://blog.sina.com.cn/s/blog_4a50d85b0100lzi2.html

Star

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
http://www.itwis.com/html/net/c/20100506/8234.html
- y! v! H2 {# \" ~+ ~7 o
/ V! Z$ ]( \- q; }2 y程序代码
' |  `# O5 Z: F) {7 v1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
5 g# k5 _: R. [) I4 N5 _8 ~% X5) public string[] Split(char[] separator, int count, StringSplitOptions options)
6 K; Y6 w& Y- G% ~* m6) public string[] Split(string[] separator, int count, StringSplitOptions options)

$ J. V- Z  I& q) E$ h2 u+ D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";)：
- e, I% n% Z) l) @' X# C
1. public string[] Split(params char[] separator)

8 f+ J. X8 [( H, u* } 程序代码
string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
5 r4 b- {7 V$ Z6 T0 Zstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

2. public string[] Split(char[] separator, int count)
' x. F* w2 ^' Y" C4 d6 F7 q2 x" G
程序代码
string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
' z# G4 f9 b1 W" }* Ystring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}

# s: h8 a, O! Y4 N3. public string[] Split(char[] separator, StringSplitOptions options)
- I+ }) n8 [- z% @! W% B
程序代码
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
* a8 G& P- S/ n0 y- O6 }string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
0 }: J6 e4 U" P) Z
4. public string[] Split(string[] separator, StringSplitOptions options)
" e7 c8 K& ?5 R6 G  J
$ l  H, _4 X8 v0 K( q 程序代码
string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
5 A# O- R6 S/ Xstring[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
% a# i! x; b% T/ }# f
5. public string[] Split(char[] separator, int count, StringSplitOptions options)

程序代码
( b: c; `  a* I8 w+ n' U8 c' y" Pstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
+ ]1 ?, j( n. S# }% e% ystring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
7 |* Q7 Y2 U( U, d/ Q( r
6. public string[] Split(string[] separator, int count, StringSplitOptions options)
( g9 `) Z0 R0 D2 Q' c
代码
# ]* q" ?* q9 m. U! E" Rstring[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
! n1 ?' X6 j3 E0 Z  cstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素