Category : Files from Magazines
Archive   : IMB9010.ZIP
Filename : SB3.BAS
'****************************************************************
'** Purpose - This program demonstrates how to search for blank *
'** fields *
'****************************************************************
CLS
'****************** Setup ISAM file **************************
TYPE SampleRecord
Field1 AS STRING * 20
Field2 AS STRING * 20
END TYPE
DIM SR AS SampleRecord 'Record variable to move data
' in and out of file
OPEN "TestFile.MDB" FOR ISAM SampleRecord "Table1" AS #1
CREATEINDEX #1, "FIELD1INDEX", 0, "Field1"
SETINDEX #1, "FIELD1INDEX" 'Set the active index
'******************* Add records to file **********************
RANDOMIZE TIMER
PRINT "Creating records": PRINT
FOR I = 1 TO 100
R$ = "REC" + STR$(I)
IF INT(20 * RND) = 10 THEN
SR.Field1 = ""
PRINT "Blank field record "; I
ELSE
SR.Field1 = R$ + " Field1 "
END IF
IF TEXTCOMP(SR.Field1, "") = 0 THEN SR.Field1 = "~"
SR.Field2 = R$ + " Field2 "
INSERT #1, SR
NEXT I
'****************** Scan for blank Field1 ********************
MOVEFIRST #1 'Set initial file postion
PRINT : PRINT "Searching for blank fields": PRINT
SEEKEQ #1, "~" '
DO
RETRIEVE #1, SR
IF TEXTCOMP(SR.Field1, "~") = 0 THEN
PRINT "Found it "; SR.Field1; SR.Field2
ELSE
EXIT DO
END IF
MOVENEXT #1
LOOP
PRINT "End of file reached. Terminating program."
CLOSE 1
KILL "TESTFILE.MDB"
END
Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!
This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.
But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/