機房收費系統之動態重新整理下機

在網咖上網,卡里沒錢就要系統強制下機.怎麼辦?

這是我用到timer1控制項,

timer1重要的屬性是interval.但lnterval有範圍限制,不過我可以通過函式來調節大小.在這裡不用,你可以隨便什麼時候重新整理.

我還用到動態陣列redim

redim :在有些時候不知道需要多大的陣列，就可以使用乙個能改變大小的陣列，就是動態陣列，redim是很方便，靈活的可以隨時改變大小的陣列。有效管理記憶體，可以將記憶體空間釋放給系統，大大節省記憶體，提高執行速度。

private sub timer1_timer()

dim i, cardno as integer
dim txtsql, msgtext as string
dim mrcba, mrcon, mrc1, mrcstudent as adodb.recordset
dim intconsumetime, cmoney, newcash, pastcash, fixusercharge, temusercharge as integer
txtsql = "select * from basicdata_info"
set mrcba = executesql(txtsql, msgtext)
txtsql = "select * from student_info"
set mrcstudent = executesql(txtsql, msgtext)
txtsql = "select * from 0nline_info"
set mrcon = executesql(txtsql, msgtext)
txtsql = "select * from line_info"
set mrc1 = executesql(txtsql, msgtext)
'當online表沒有資料時直接跳出此過程
if mrcon.eof and mrcon.bof then
timer1.enabled = false
exit sub
end if
fixusercharge = mrcba.fields(0)  '固定使用者的單位費用
temusercharge = mrcba.fields(1)  '臨時使用者的單位費用
pastcash = mrcstudent.fields(7)  '獲得原金額
'將上機卡號定義為乙個陣列
redim a(mrcon.recordcount) as string
for i = 0 to mrcon.recordcount - 1
a(i) = trim(mrcon!cardno)
cardno = a(i)
txtsql = "select * from online_info where cardno='" & trim(cardno) & "'"
set mrcon = executesql(txtsql, msgtext)
intconsumetime = datediff("n", mrcon.fields(10), now)    '計算時間
if mrcon!card = "固定使用者" then
cmoney = int(intconsumetime / 60 + 1) * fixusercharge
newcash = pastcash - cmoney
'判斷金額是否充足
if (newcash > 0) and (newcash <= val(mrcba!limitcash)) or (newcash < 0) then
txtsql = "delete * from online_info where cardno = '" & cardno & "'"
set mrcon = executesql(txtsql, msgtext)
msgbox "卡號：" & cardno & ",餘額不足，即將下機！", 48, "警告"
mrcstudent!cash = newcash
mrcstudent.update
txtconsume.text = cmoney
txtcash.text = newcash
call viewdata
exit sub
end if
else
cmoney = int(intconsumetime / 60 + 1) * temusercharge
newcash = pastcash - cmoney
'判斷金額是否充足
if (newcash > 0) and (newcash <= val(mrcba!limitcash)) or (newcash < 0) then
txtsql = "delete * from online_info where cardno = '" & cardno & "'"
set mrcon = executesql(txtsql, msgtext)
msgbox "卡號：" & cardno & ",餘額不足，即將下機！", 48, "警告"
mrcstudent!cash = newcash
mrcstudent.update
txtconsume.text = cmoney
txtcash.text = newcash
call viewdata
exit sub
end if
end if
end sub
private sub viewdata()
txtcardno.text = mrc1.fields(0)
txtstudentno.text = mrc1!studentno
txtdepartment.text = mrc1!department
txttype.text = mrc1!type
txtname.text = mrc1!studentname
txt***.text = mrc1!***
txtondate.text = mrc1!ondate
txtontime.text = mrc1!ontime
txtoffdate.text = date
txtofftiem.text = time
txtconsumetime.text = intconsumetime
mrc1!offdate = date
mrc1!offtime = time
mrc1!consumetime = intconsumetime
mrc1.update
end sub

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