PREVENTING BREAKOFF STRINGS WITH CHR(0) IN RECORDS-SETS
I have a ADO.recordset open on een database (pervasive)
I read record to this set.
one field is fixed to 8 bytes
we use this to put in MKD-style
if the string does not contain any chr$(0) value all is ok,
but the moment it contains 1 or more chr$(0) the string during
update or reading will be cut off at postion chr$(0)
Using random file with fielded string 8 bytes goes ok
I read record to this set.
one field is fixed to 8 bytes
we use this to put in MKD-style
if the string does not contain any chr$(0) value all is ok,
but the moment it contains 1 or more chr$(0) the string during
update or reading will be cut off at postion chr$(0)
Using random file with fielded string 8 bytes goes ok
Jaime Olivares
You must use a binary field
ASKER
Do you mean that in my recordset DNS resources i must define the field not as char?
I'am not sure if a understand you, sorry .
Jack
I'am not sure if a understand you, sorry .
Jack
I don't know your database details but if you want to store a chr$(0) in a database you must do it in a binary field. The NULL character has a special meaning in some systems. It is used to signal end-of-string, so, don't store it in a string field but in a binary field.
ASKER
Ok, the VBdatabase is pervasive, the Dosdatabase is Btrieve , or just
plain 'old' likewise Field #1, 8 as Money$, 30 as text$
then: LSET Money$ = MKD$(amount#) :
I can read these files in VB ok, and convert back as Money#=CVD(rs.name)
but msoft MKD double prec. will contain sometimes in the 8 byte a '0' byte
If i do reading in VB with old-plain fielding all ok,
as soon as it is redirected to ADO.recordset, at chr(0) point in a string it
will break off. so sometimes 7 bytes, then 5 bytes or if at leading pos. zero bytes
returned. in all other case CVD(rsrecord) is ok
plain 'old' likewise Field #1, 8 as Money$, 30 as text$
then: LSET Money$ = MKD$(amount#) :
I can read these files in VB ok, and convert back as Money#=CVD(rs.name)
but msoft MKD double prec. will contain sometimes in the 8 byte a '0' byte
If i do reading in VB with old-plain fielding all ok,
as soon as it is redirected to ADO.recordset, at chr(0) point in a string it
will break off. so sometimes 7 bytes, then 5 bytes or if at leading pos. zero bytes
returned. in all other case CVD(rsrecord) is ok
I am not sure if you are refering actually to CHR$(0), the null character, or CHR$(48), the zero digit character.
If the first, maybe you can replace the CHR$(0) with a space or a zero character.
If the first, maybe you can replace the CHR$(0) with a space or a zero character.
ASKER
chr$(zero), you can't replace, i did a test run on a loop from -99999999 to +999999999
the full asci set is used in combination with all these amounts
the full asci set is used in combination with all these amounts
ASKER CERTIFIED SOLUTION
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ASKER
when i use the commands
cn.MoveNext
dummy$= cn.Fields(21) ' (fields(21) contains a binary value 8 bytes
the string will contain chr(0) postitions, but is not terminated and has 8 bytes
the I can use the CVD(dummy$) function to get the money value , double preciscion
Only when I retrieve a record form ADOset is terminated.
cn.MoveNext
dummy$= cn.Fields(21) ' (fields(21) contains a binary value 8 bytes
the string will contain chr(0) postitions, but is not terminated and has 8 bytes
the I can use the CVD(dummy$) function to get the money value , double preciscion
Only when I retrieve a record form ADOset is terminated.
ASKER
it is solved in a mayby dum way,
I do this but not really smart I think suggested solutions sofar in this question block
did not work
Private Sub brokergrid_RowColChange(La
brNum = brokergrid.Text
If rsBrokers.BOF = False And rsBrokers.EOF = False Then
If brokergrid.Text > LastKey Then
While rsBrokers.Fields(0) < brokergrid.Text
If rsBrokers.EOF Then Exit Sub
rsBrokers.MoveNext
Wend
Else
If rsBrokers.BOF Then Exit Sub
While rsBrokers.Fields(0) > brokergrid.Text
rsBrokers.MovePrevious
Wend
End If
sftBeginSaldo.Text = STR(CVD(rsBrokers.Fields(2
End If
I do this but not really smart I think suggested solutions sofar in this question block
did not work
Private Sub brokergrid_RowColChange(La
brNum = brokergrid.Text
If rsBrokers.BOF = False And rsBrokers.EOF = False Then
If brokergrid.Text > LastKey Then
While rsBrokers.Fields(0) < brokergrid.Text
If rsBrokers.EOF Then Exit Sub
rsBrokers.MoveNext
Wend
Else
If rsBrokers.BOF Then Exit Sub
While rsBrokers.Fields(0) > brokergrid.Text
rsBrokers.MovePrevious
Wend
End If
sftBeginSaldo.Text = STR(CVD(rsBrokers.Fields(2
End If