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Update to child table fails

Hello,
I have 2 tables with a relationship set up in the dataset with vb
..net. I add a new record to the parent table then edit an existing child
record to have the new parent ID. However when I do the update the changed
parentid in the child table fails to change. No error is given its just that
the change is not written to the Database.

When I step through the records for the child table the one I would expect
to be changed has a row state of Unchanged!

Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent table
record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try
Nov 21 '05 #1
5 3547
Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@news6.svr.po l.co.uk...
Hello,
I have 2 tables with a relationship set up in the dataset with vb
.net. I add a new record to the parent table then edit an existing child
record to have the new parent ID. However when I do the update the changed
parentid in the child table fails to change. No error is given its just
that the change is not written to the Database.

When I step through the records for the child table the one I would expect
to be changed has a row state of Unchanged!
I assume that right after you assign the id of the new parent to an existing
child row that that row will have a Modified RowState (you could also use
SetParentRow). So at what point does the RowState change back to Unchanged
?

How did you add the relation ? Make sure you don't set Accept/Reject rule to
Cascade.

Also never call AcceptChanges between fill and update because that will also
change the RowState to Unchanged.

Anyways, RowSate of the modified child row should be Modified before the
Update, it's something to look into.

If you can't find the problem post all relevant code.

HTH,
Greetings


Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent table
record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try

Nov 21 '05 #2
Thanks Bart, I'll look at that ASAP.
Paul

----- Original Message -----
From: "Bart Mermuys" <bm************ *@hotmail.com>
Newsgroups:
comp.lang.basic .visual.databas e,microsoft.pub lic.dotnet.lang uages.vb
Sent: Tuesday, October 25, 2005 10:01 PM
Subject: Re: Update to child table fails

Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@news6.svr.po l.co.uk...
Hello,
I have 2 tables with a relationship set up in the dataset with vb
.net. I add a new record to the parent table then edit an existing child
record to have the new parent ID. However when I do the update the
changed parentid in the child table fails to change. No error is given
its just that the change is not written to the Database.

When I step through the records for the child table the one I would
expect to be changed has a row state of Unchanged!


I assume that right after you assign the id of the new parent to an
existing child row that that row will have a Modified RowState (you could
also use SetParentRow). So at what point does the RowState change back to
Unchanged ?

How did you add the relation ? Make sure you don't set Accept/Reject rule
to Cascade.

Also never call AcceptChanges between fill and update because that will
also change the RowState to Unchanged.

Anyways, RowSate of the modified child row should be Modified before the
Update, it's something to look into.

If you can't find the problem post all relevant code.

HTH,
Greetings


Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent table
record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try


Nov 21 '05 #3
Hello,
tried the things below with no luck. The parent & child tables are
held within a single dataset, the tables (dataset) are exact mirrors of
their base tables in the MS Access database I am using. In the Db I have a 1
to many relationship (ref int switched on) between parent & child. The
relationship is also defined in the dataset as well.

The problem appears to be this:
(1) I add a new record in the parent (dataset), say this gives me an ID=1667
(2) I find the child record (dataset) that had the old parentID (eg 1666)
and update to the value of the new parentID value (1667). This I can do
under the rules of referential integrity.
(3) So now I have a record in the parent table (dataset) with an ID = 1667
and a related record in the child table (ParentID=1667) . As I havn't done a
dataAdaptor.Upd ate call yet MS Access is out of the picture.
(4) I then call the dataAdaptor.Upd ate call for the parent table, this works
OK.
(5) I then call the dataAdaptor.Upd ate call for the CHILD table, this is
when I get the error about must having a related record in the parent table.
(6) If I remove the relationship between Parent & Child in both MS Access
and the dataset schema the code goes through without an error. However when
I look at the Parent & Child tables in MS Access a new record has been added
to the table but it does not have the ID it was allocated by vb .net.
(8) When I remove the relationship in MS Access only the code again goes
through without an error and the same result as in point (6).
(9) When I look in the Child table the record has had the value of the
ParentID changed to 1667 but there is no record with an ID=1667 in the
Parent table because MS Access allocated a different ID when inserting the
new record into the Parent table.
(10) Now I understand the vb .net and MS Access will allocate autonumber
fields differently I thought the values would be synchronised? So when the
parent table gets a new record ID from MS Access either it or ado .net
wwould change the child ParentID field to the new value.

Any help would be much appreciated....

Thanks
Paul

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@newsg4.svr.p ol.co.uk...
Thanks Bart, I'll look at that ASAP.
Paul

----- Original Message -----
From: "Bart Mermuys" <bm************ *@hotmail.com>
Newsgroups:
comp.lang.basic .visual.databas e,microsoft.pub lic.dotnet.lang uages.vb
Sent: Tuesday, October 25, 2005 10:01 PM
Subject: Re: Update to child table fails

Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@news6.svr.po l.co.uk...
Hello,
I have 2 tables with a relationship set up in the dataset with vb
.net. I add a new record to the parent table then edit an existing child
record to have the new parent ID. However when I do the update the
changed parentid in the child table fails to change. No error is given
its just that the change is not written to the Database.

When I step through the records for the child table the one I would
expect to be changed has a row state of Unchanged!


I assume that right after you assign the id of the new parent to an
existing child row that that row will have a Modified RowState (you could
also use SetParentRow). So at what point does the RowState change back
to Unchanged ?

How did you add the relation ? Make sure you don't set Accept/Reject rule
to Cascade.

Also never call AcceptChanges between fill and update because that will
also change the RowState to Unchanged.

Anyways, RowSate of the modified child row should be Modified before the
Update, it's something to look into.

If you can't find the problem post all relevant code.

HTH,
Greetings


Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent table
record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try



Nov 21 '05 #4
Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dk******** *@newsg3.svr.po l.co.uk...
Hello,
tried the things below with no luck. The parent & child tables are
held within a single dataset, the tables (dataset) are exact mirrors of
their base tables in the MS Access database I am using. In the Db I have a
1 to many relationship (ref int switched on) between parent & child. The
relationship is also defined in the dataset as well.

The problem appears to be this:
(1) I add a new record in the parent (dataset), say this gives me an
ID=1667
(2) I find the child record (dataset) that had the old parentID (eg 1666)
and update to the value of the new parentID value (1667). This I can do
under the rules of referential integrity.
(3) So now I have a record in the parent table (dataset) with an ID = 1667
and a related record in the child table (ParentID=1667) . As I havn't done
a dataAdaptor.Upd ate call yet MS Access is out of the picture.
(4) I then call the dataAdaptor.Upd ate call for the parent table, this
works OK.
(5) I then call the dataAdaptor.Upd ate call for the CHILD table, this is
when I get the error about must having a related record in the parent
table.
(6) If I remove the relationship between Parent & Child in both MS Access
and the dataset schema the code goes through without an error. However
when I look at the Parent & Child tables in MS Access a new record has
been added to the table but it does not have the ID it was allocated by vb
.net.
(8) When I remove the relationship in MS Access only the code again goes
through without an error and the same result as in point (6).
(9) When I look in the Child table the record has had the value of the
ParentID changed to 1667 but there is no record with an ID=1667 in the
Parent table because MS Access allocated a different ID when inserting the
new record into the Parent table. (10) Now I understand the vb .net and MS Access will allocate autonumber
fields differently I thought the values would be synchronised? So when the
parent table gets a new record ID from MS Access either it or ado .net
wwould change the child ParentID field to the new value.
Yes, the autonumber can be different inside the DataTable and db, when you
do an update you can retrieve the db generated pk, but this doesn't happen
automatically and it is handled differently for sqlsever and access(jet).

For access you need to add an eventhandler to the
OleDbDataAdapte r.RowUpdated event and use an OleDbCommand to do a query like
"SELECT @@IDENTITY" to get the new pk.

See
http://msdn.microsoft.com/library/de...anidcrisis.asp
Scroll to Microsoft Access/JET Issues

Once the parent DataRow gets updated with the new pk it should automatically
update all related child DataRow's when there is a relation (in DataSet)
between them and UpdateRule is Cascade (which is the default).
HTH,
Greetings

Any help would be much appreciated....

Thanks
Paul

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@newsg4.svr.p ol.co.uk...
Thanks Bart, I'll look at that ASAP.
Paul

----- Original Message -----
From: "Bart Mermuys" <bm************ *@hotmail.com>
Newsgroups:
comp.lang.basic .visual.databas e,microsoft.pub lic.dotnet.lang uages.vb
Sent: Tuesday, October 25, 2005 10:01 PM
Subject: Re: Update to child table fails

Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@news6.svr.po l.co.uk...
Hello,
I have 2 tables with a relationship set up in the dataset with
vb .net. I add a new record to the parent table then edit an existing
child record to have the new parent ID. However when I do the update
the changed parentid in the child table fails to change. No error is
given its just that the change is not written to the Database.

When I step through the records for the child table the one I would
expect to be changed has a row state of Unchanged!

I assume that right after you assign the id of the new parent to an
existing child row that that row will have a Modified RowState (you
could also use SetParentRow). So at what point does the RowState change
back to Unchanged ?

How did you add the relation ? Make sure you don't set Accept/Reject
rule to Cascade.

Also never call AcceptChanges between fill and update because that will
also change the RowState to Unchanged.

Anyways, RowSate of the modified child row should be Modified before the
Update, it's something to look into.

If you can't find the problem post all relevant code.

HTH,
Greetings

Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent
table record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try



Nov 21 '05 #5
Hello,
I tried using the Dataset.OnUpdat e event but (probably I am using
transaction and havnt committed yet) selecting the max value for the ID
field in the parent table just returns the value that was the highest value
before I started to do anything. I assume by commiting first I would then be
able to get the new ID value but I dont want to do that as I want the update
to go through or if problems be able to roll things back ie I dont want to
leave the DB in an inconsistent state.

Cheers
Paul M

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dk******** *@newsg3.svr.po l.co.uk...
Hello,
tried the things below with no luck. The parent & child tables are
held within a single dataset, the tables (dataset) are exact mirrors of
their base tables in the MS Access database I am using. In the Db I have a
1 to many relationship (ref int switched on) between parent & child. The
relationship is also defined in the dataset as well.

The problem appears to be this:
(1) I add a new record in the parent (dataset), say this gives me an
ID=1667
(2) I find the child record (dataset) that had the old parentID (eg 1666)
and update to the value of the new parentID value (1667). This I can do
under the rules of referential integrity.
(3) So now I have a record in the parent table (dataset) with an ID = 1667
and a related record in the child table (ParentID=1667) . As I havn't done
a dataAdaptor.Upd ate call yet MS Access is out of the picture.
(4) I then call the dataAdaptor.Upd ate call for the parent table, this
works OK.
(5) I then call the dataAdaptor.Upd ate call for the CHILD table, this is
when I get the error about must having a related record in the parent
table.
(6) If I remove the relationship between Parent & Child in both MS Access
and the dataset schema the code goes through without an error. However
when I look at the Parent & Child tables in MS Access a new record has
been added to the table but it does not have the ID it was allocated by vb
.net.
(8) When I remove the relationship in MS Access only the code again goes
through without an error and the same result as in point (6).
(9) When I look in the Child table the record has had the value of the
ParentID changed to 1667 but there is no record with an ID=1667 in the
Parent table because MS Access allocated a different ID when inserting the
new record into the Parent table.
(10) Now I understand the vb .net and MS Access will allocate autonumber
fields differently I thought the values would be synchronised? So when the
parent table gets a new record ID from MS Access either it or ado .net
wwould change the child ParentID field to the new value.

Any help would be much appreciated....

Thanks
Paul

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@newsg4.svr.p ol.co.uk...
Thanks Bart, I'll look at that ASAP.
Paul

----- Original Message -----
From: "Bart Mermuys" <bm************ *@hotmail.com>
Newsgroups:
comp.lang.basic .visual.databas e,microsoft.pub lic.dotnet.lang uages.vb
Sent: Tuesday, October 25, 2005 10:01 PM
Subject: Re: Update to child table fails

Hi,

"PAUL" <pa**@nospam.wa nadoo.co.uk> wrote in message
news:dj******** **@news6.svr.po l.co.uk...
Hello,
I have 2 tables with a relationship set up in the dataset with
vb .net. I add a new record to the parent table then edit an existing
child record to have the new parent ID. However when I do the update
the changed parentid in the child table fails to change. No error is
given its just that the change is not written to the Database.

When I step through the records for the child table the one I would
expect to be changed has a row state of Unchanged!

I assume that right after you assign the id of the new parent to an
existing child row that that row will have a Modified RowState (you
could also use SetParentRow). So at what point does the RowState change
back to Unchanged ?

How did you add the relation ? Make sure you don't set Accept/Reject
rule to Cascade.

Also never call AcceptChanges between fill and update because that will
also change the RowState to Unchanged.

Anyways, RowSate of the modified child row should be Modified before the
Update, it's something to look into.

If you can't find the problem post all relevant code.

HTH,
Greetings

Basically in the child table I have at the start:

ParentID
1664
1665
1666 <------ParentID to change
---------

1666 parentid gets changed to -1 as thats the new ID of the parent
table record, the -1 being a temporary placeholder.

The parent table record goes in fine and is there when I look in the
database after the update has been done.
Update code
Try

daAffectedObjec ts.DeleteComman d.Transaction = trnMain

daAffectedObjec ts.InsertComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.Transaction = trnMain

daAffectedObjec ts.UpdateComman d.CommandText = _

"UPDATE tblAffectedObje cts " & _

"SET Archived = ?, CheckedOutBy = ?, CheckedOutDatab ase = ?, " & _

"CheckedOut Date = ?, Description = ?, IssueID = ?, ObjectID = ?, " & _

"CheckedInD ate = ? " & _

"WHERE ID = ?"
daAffectedObjec ts.Update(dsIss ue, "tblAffectedObj ects")
Catch dbcx As DBConcurrencyEx ception

createMessage(d bcx)

Catch err As Exception

MsgBox(Me.Name & _

System.Reflecti on.MethodBase.G etCurrentMethod ().Name & vbCrLf & _

"Affected objects update failed - can not update issue" & vbCrLf & _

"Descriptio n : " & err.ToString & vbCrLf & _

"Line Number : " & Erl())

trnMain.Rollbac k()

btnUpdate.Enabl ed = True

btnCancel.Enabl ed = True

If OleDbConnection 1.State = ConnectionState .Open Then

OleDbConnection 1.Close()

End If

Exit Sub

Finally

End Try



Nov 23 '05 #6

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6582
by: dennis | last post by:
Hello, I'm having trouble solving the following problem with DB2 UDB 8.2. I need to create a trigger that performs certain extra constraint validations (temporal uniqueness). One of the tables has no primary key. I'm having trouble expressing an update trigger that checks for existing rows, contemporary to the updated one, but exclusing the
2
2542
by: Michael D. Reed | last post by:
I am using ClickOnce to distribute a program. It works well except for one detail. When a new version is installed, the program does not initialize properly immediately after the update. The sequence is the user starts the program, is informed a new version is ready, installs it, when it is complete and the main form is displayed, the user needs close the form, and restarts the program to the form to initialize properly. The problem is...
1
5972
by: nitinkhare1 | last post by:
Please help,I'm very frustated. when I ADD the data in kn_history_question table of htbase_tst database....it giving the error "Cannot add or update a child row:a foreign key constraint fails,<'htbase_tst/kn_history_question', CONSTRAINT 'FK_kn_history_question_complaint' FOREIGN KEY ('complaint_id' ) REFERENCES 'complaint'('id')). This is my table script..... CREATE TABLE `city` ( `id` int(11) NOT NULL auto_increment, ...
0
9682
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10864
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10562
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
10263
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9390
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
7803
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6989
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
1
4469
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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3122
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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