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
6 d; Y9 e- L' Y, V/ _3 s
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

0 f5 f8 @1 k& M0 n" [" P0 s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
* V- D* W9 [1 I% E- r: \http://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
6 B  ]4 |5 T5 ~& ~http://www.itwis.com/html/net/c/20100506/8234.html

程序代码
" x! a! `3 \: X, Z& `6 n  T+ L1) public string[] Split(params char[] separator)
* [6 q" o  q* Y# v: V9 C2) public string[] Split(char[] separator, int count)
5 h; }" T7 U7 K' `3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
5) public string[] Split(char[] separator, int count, StringSplitOptions options)
6) public string[] Split(string[] separator, int count, StringSplitOptions options)
/ x! s1 n7 _7 ^1 O. e0 j
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";)：
! _/ H9 x7 `5 c
1. public string[] Split(params char[] separator)
! z* m5 F2 V2 a- U% z- S* n
程序代码
% n# h& n5 Y! S& @- V  Gstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

2. public string[] Split(char[] separator, int count)

1 Z: ?, f2 T$ ^) K( ~7 m 程序代码
5 r4 [! A2 F/ ]( m4 hstring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
: U! F! {, R3 {7 }+ ]string[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
( L4 M$ b% b  D4 H. D7 k
3. public string[] Split(char[] separator, StringSplitOptions options)

程序代码
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
) `8 t. {8 a5 a) x0 Hstring[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
* t, g; i3 l7 R8 V$ C7 U
: n! L( h$ {/ i; m# A) V4. public string[] Split(string[] separator, StringSplitOptions options)
+ k! _- i* G3 N+ d- n* @
, r, \) [$ \' [3 [5 Z. L) N 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
3 B8 m& M& h$ r" n
, e, g8 I5 A& J: i; t; G4 z5. public string[] Split(char[] separator, int count, StringSplitOptions options)
0 \) \0 V: r, ^' I% Z2 o3 b5 U6 Z
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
) Z# D+ E2 d" c% Y, o1 I. pstring[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
' s. l% d9 \, [  I2 B1 _& Z
6. public string[] Split(string[] separator, int count, StringSplitOptions options)
+ R. O, [) v+ L& i; }7 I- F
代码
4 n4 G, X- l5 w1 r; J4 [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