ASP常用的函数

ASP常用的函数，希望能用的着。

<%
dim db
db="dbms.mdb"

'
'执行sql语句，不返回值,sql语句最好是如下
'update 表名 set 字段名=value,字段名=value where 字段名=value
'delete from 表名 where 字段名=value
'insert into 表名 (字段名,字段名) values (value,value)
'
Sub NoResult(sql)
dim conn
dim connstr
Set conn = Server.CreateObject("ADODB.Connection")
connstr="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath(""&db&"")
conn.Open connstr
conn.execute sql
conn.close
set conn=nothing
End Sub

'
'执行select语句，返回recordset对象。该对象只读。也就是不能更新
'
Function Result(sql)
dim conn
dim connstr
dim rcs
Set conn = Server.CreateObject("ADODB.Connection")
connstr="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath(""&db&"")
conn.Open connstr
Set rcs = Server.CreateObject("ADODB.Recordset")
rcs.open sql,conn,1,1
set Result = rcs
End Function

'
' 弹出对话框
'
Sub alert(message)
message = replace(message,"'","\'")
Response.Write ("<script>alert('" & message & "')</script>")
End Sub

'
' 返回上一页，一般用在判断信息提交是否完全之后
'
Sub GoBack()
Response.write ("<script>history.go(-1)</script>")
End Sub

'
' 重定向的连接
'
Sub Go(url)
Response.write ("<script>location.href('" & url & "')</script>")
End Sub

'
' 把html标记替换
'

function htmlencode2(str)
dim result
dim l
if isNULL(str) then
htmlencode2=""
exit function
end if
l=len(str)
result=""
dim i
for i = 1 to l
select case mid(str,i,1)
case "<"
result=result+"&lt;"
case ">"
result=result+"&gt;"
case chr(13)
result=result+"<br>"
case chr(34)
result=result+"&quot;"
case "&"
result=result+"&amp;"
case chr(32)
'result=result+"&nbsp;"
if i+1<=l and i-1>0 then
if mid(str,i+1,1)=chr(32) or mid(str,i+1,1)=chr(9) or mid(str,i-1,1)=chr(32) or mid(str,i-1,1)=chr(9) then
result=result+"&nbsp;"
else
result=result+" "
end if
else
result=result+"&nbsp;"
end if
case chr(9)
result=result+" "
case else
result=result+mid(str,i,1)
end select
next
htmlencode2=result
end function

'
' 检查sql字符串中是否有单引号，有则进行转化
'
function CheckStr(str)
dim tstr,l,i,ch
str = Trim(str)
l=len(str)
for i=1 to l
ch=mid(str,i,1)
if ch="'" then
tstr=tstr+"'"
end if
tstr=tstr+ch
next
CheckStr=tstr
end function
%>