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
8 L0 L. A0 p1 `* q) n  X# r; w
2 W8 X) u# M# w- B; \# A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
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
http://www.itwis.com/html/net/c/20100506/8234.html
- U/ B9 \: U( p
/ d$ t9 `$ f4 v$ O1 z1 n: x0 j9 \程序代码
! A4 l# F3 ~: @9 u/ y1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count)
- C, S; y- Q0 ~, i  i3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
0 |" o1 v3 L/ r7 ^; K8 r5) public string[] Split(char[] separator, int count, StringSplitOptions options)
4 Z( z( Q( i6 d) k* b6) public string[] Split(string[] separator, int count, StringSplitOptions options)
( w9 R0 L. x2 ?$ z3 m- J7 V4 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";)：
1 o' I9 o; z2 Q* b) U1 ~3 D7 W
1. public string[] Split(params char[] separator)
6 }+ ]0 ~2 D) O5 q
7 ]6 c) C4 W$ x# B: i 程序代码
string[] 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)

程序代码
) K0 U) J# F" o2 G+ ustring[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
5 I; v  A  h/ B! P/ R! xstring[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
8 `& j7 p) p. f4 q+ N
. F) O' E. {6 b$ D3. public string[] Split(char[] separator, StringSplitOptions options)

' r+ u0 e6 D" s 程序代码
string[] 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)
9 l9 d6 {( t, J( G' F6 a
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
0 ~- W: b; D  L8 c6 H7 N$ C
  a& F) g. O4 l! n4 E4 d3 m5. public string[] Split(char[] separator, int count, StringSplitOptions options)

( v; [$ o! P2 y: ^$ w3 _0 X- G# k 程序代码
, ?& M- D$ p1 _- `9 jstring[] 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

6. public string[] Split(string[] separator, int count, StringSplitOptions options)

代码
) O6 f- I+ c3 w3 M( Z  p4 Astring[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素
1 D- ]* ?/ H) U8 }) H$ pstring[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素