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

. p0 C* U' Q9 D6 L% y% G$ R, 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
" n% b; N7 C& J
' F- W3 l& D2 b- H, G! a; A6 z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
, q- P$ C% K  }. O: ~. Dhttp://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
# G% g2 c9 W; }) J" khttp://www.itwis.com/html/net/c/20100506/8234.html
: k! ?  N- Q: p9 p$ d. k: Y; t. B
程序代码
1) public string[] Split(params char[] separator)
6 B5 H( W; V+ C! b# g2) public string[] Split(char[] separator, int count)
3 p6 w! O+ y4 _' B1 }7 P* P/ E% b5 y" i3) public string[] Split(char[] separator, StringSplitOptions options)
4) public string[] Split(string[] separator, StringSplitOptions options)
4 T8 y1 x  P* N; M5 F/ x/ a1 {5) public string[] Split(char[] separator, int count, StringSplitOptions options)
8 R+ n- p0 n8 g- `6) public string[] Split(string[] separator, int count, StringSplitOptions options)
) [6 q* p" R( m8 u$ Q
" X* m% w0 ^: C# h7 ?4 v7 F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";)：
' A+ {9 M8 d, e
, n* b$ [: o+ v1. public string[] Split(params char[] separator)

程序代码
8 h% {5 \. P4 N# _- S7 I/ ~string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}

; F( L7 k0 n5 E- A7 m! U2. public string[] Split(char[] separator, int count)

8 e# e5 i4 b! {! I. A8 G+ J 程序代码
! R4 p- [$ \# Z8 l. m8 G3 }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"}

1 o& m2 z$ h0 v- r/ U3. 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
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)

程序代码
# \4 B( a7 o7 {+ v6 A0 B3 xstring[] 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

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

程序代码
  K# H! b2 c& _5 M$ m% xstring[] 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

( v& ]3 u: F4 R: c- @& S+ s7 P& @6. public string[] Split(string[] separator, int count, StringSplitOptions options)

代码
% f5 @: ?' O& w, ~& p* ustring[] 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