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

/ V& W$ [* v8 q8 c9 X" m+ K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

' r7 t# E) b" h  m6 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
  P6 {3 B5 N* L! _! W3 A: ]' X% w1 nhttp://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

程序代码
1) public string[] Split(params char[] separator)
, ?$ U, v& B+ ]5 ^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) public string[] Split(char[] separator, int count, StringSplitOptions options)
7 R$ s; D5 i/ O8 L9 Q& B6) public string[] Split(string[] separator, int count, StringSplitOptions options)
( W$ A* H. P7 ^
% H1 c* e( X! P. @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";)：
/ T% I9 D& i3 Y" A: g/ J
3 G0 w! t* V, g- B$ G. |, |. @1. public string[] Split(params char[] separator)
) ]% [6 U9 I. E+ t, v' c$ b/ ]
, X3 t  p( d/ i$ N+ J 程序代码
: p4 [% w) L& c4 R, b) e8 xstring[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
7 W. i1 H1 q3 D0 H' a( x' hstring[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

- s- V6 e6 C) l* B2. public string[] Split(char[] separator, int count)

* [8 o) ~, l5 v9 V9 [8 }0 A, o 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"}
  H: y7 g5 Q, J3 V  b0 h
3. public string[] Split(char[] separator, StringSplitOptions options)
+ U+ R* M, U" W6 s! ^
, x. [( Y% c, R- y" |' o 程序代码
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素
5 v! c3 O  T1 {string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
: y; L4 |& M+ d8 m; K% Z
' w- A9 W4 G3 S( X( F' J4. 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
; Z( B, H1 E0 k7 \1 M+ D3 T. H! Zstring[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素

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

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
string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
- A' s( Y; h4 v+ O: A* [6 o! q
2 O" L6 N4 v2 H7 A+ F6. public string[] Split(string[] separator, int count, StringSplitOptions options)
$ p$ r* G8 b0 H& \' E5 T
代码
- P; i! c# E7 X9 y7 `9 E/ Fstring[] 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