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

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
7 ~- g9 G; M0 b5 r- w) k, \. [
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
1 q! G2 u4 b  n, I* A  [7 V: Uhttp://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
& M4 x+ {' P2 L- ohttp://www.itwis.com/html/net/c/20100506/8234.html

# w( {- q. K* _% J2 p程序代码
# F8 M0 u- R' z, G( @' {% y9 I1) public string[] Split(params char[] separator)
+ ^$ Y. }5 \; s( @, l: u# g4 H2) public string[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
/ Q2 a2 I. l6 C; L6 ^5) public string[] Split(char[] separator, int count, StringSplitOptions options)
3 U6 z' a% D7 e0 ?! F6) public string[] Split(string[] separator, int count, StringSplitOptions options)
! ]( D0 A. p6 ]5 B: R
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";)：
2 F9 q* f, Q, K: e
1. public string[] Split(params char[] separator)

# I% A, ~% ?# d9 [! L2 k( U 程序代码
8 g! D2 ]! m# m2 gstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
# R, X- Z9 S. s  e5 @0 b# Kstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
: D2 _; K3 p6 j- W& q
2. public string[] Split(char[] separator, int count)
& `- g& N- V' E- x+ [
7 d2 u, b* R; w 程序代码
string[] 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)
% e2 ^6 T) }# N, F5 c! _* R; a& S9 n
程序代码
( l' J* m! W6 J& Z- }) I, f2 Fstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
& R6 m* P' q5 q% mstring[] 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)

4 T1 B, e: d& ~& j 程序代码
1 g( o8 ~& q; W7 D. @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
( u; {! h7 @# C0 C2 J
5. public string[] Split(char[] separator, int count, StringSplitOptions options)
+ d0 \/ Q/ `) r  q. ]
4 x% K: z% y' o( [+ D. [, @/ a 程序代码
2 G6 L0 {5 y% U3 S% k; Sstring[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
8 R6 y' U$ d/ E* a( zstring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
# {3 d/ h- e& Z. ~
6. public string[] Split(string[] separator, int count, StringSplitOptions options)

代码
string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
5 b4 H. V% {* n2 E! K2 M6 Rstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素