| Forum List • Thread List • Reply • Refresh • New Topic • Search • Previous • Next  1  |  1. Searching dat-file again (I?m new at this)#964 Posted by: 2003-05-23 14:00:27 | I?ve got two answers to my question the last time, but as a said in the subject text....I'm a newbe :).
There is a program on the internet "Simple address book", i?ve wrote my code like they did in that program. But instead of searching the dat-file by record nummber, i want to search by a name and then get all the data for that name presented.
Grateful for answers. | 2. Re: Searching datfile again (I?m new at this) #965 Posted by: cajino 2003-05-23 15:00:39 | Try this simple-sample program :)
$INCLUDE "RAPIDQ.INC"
DECLARE SUB Button1Click (Sender AS QBUTTON)
Dim Stri as QStringList
CREATE Form AS QFORM
Caption = "Form1"
Width = 320
Height = 240
Center
CREATE Label1 AS QLABEL
Caption = ""
Left = 21
Top = 92
Width = 128
Height = 21
Transparent = 1
END CREATE
CREATE Label2 AS QLABEL
Caption = ""
Left = 22
Top = 126
Width = 96
Height = 21
Transparent = 1
END CREATE
CREATE Label3 AS QLABEL
Caption = ""
Left = 28
Top = 169
Width = 104
Height = 21
Transparent = 1
END CREATE
CREATE Edit1 AS QEDIT
Text = ""
Left = 50
Top = 32
END CREATE
CREATE Button1 AS QBUTTON
Caption = "Search"
Left = 194
Top = 32
TabOrder = 1
OnClick = Button1Click
END CREATE
END CREATE
Form.ShowModal
SUB Button1Click (Sender AS QBUTTON)
search$=Edit1.Text
Stri.Loadfromfile("c:rapidqfile.dat")
lines=Stri.Itemcount
for i=0 to lines -1
compare$=Field$(Stri.Item(i), "$", 1)
if search$=compare$ then
Label1.Caption=Field$(Stri.Item(i), "$", 1)
Label2.Caption=Field$(Stri.Item(i), "$", 2)
Label3.Caption=Field$(Stri.Item(i), "$", 3)
end if
next
END SUB
P.S. file.dat has this structure:
John$Rodeo dr.$Los Angeles
Ted$22nd St.$New York
Luigi$Via Garibaldi$Rome
Bye
Cajino | 3. Re: Searching datfile again (I?m new at this) #966 | One method:
Read all data in memory (array of the structure), then search this array by the name, suitable for small data file;
Or another:
Read a block of data in, search, then next block, suitable for large data file. | | Forum List • Thread List • Reply • Refresh • New Topic • Search • Previous • Next 1 |
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