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by: Bruce Stockwell |
last post by:
the setup:
Webservice/WinClient application/SQL server.
VS.Net (visual basic) winform wizard creates a simple form
with load cancel cancelall and datagrid bound to a simple
Dataset with one Datatable. No coding by programer, All
wizardry. User starts app, opens form, adds (4) records
and clicks update.
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by: Li Weng |
last post by:
Hi,
I have an original dataset. It is copied to 2 different forms. Each form
adds a new row to the same table in that dataset. When I merge these 2
dataset back to original one, the 2 new rows merge to one!
My question is how I can still keep them as 2 rows in that table, not merge
to one?
Thanks.
Li
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by: Jeff Brown |
last post by:
OK i removed all of my datasets to start fromo scratch again with another
method.
Is there a way i can create all my datasets in the MDI Parent form and
reference them from child forms
*******************
for instance i just created dsName1 in the MDi Parent and the dsName.xsd was
created in the solution.
Now i want 2 different child forms to be able to access certain data
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by: Marcel Hug |
last post by:
Hello NG !
I have a tricky question about dataSet and dataTable.
In my app I have 2 databases. In the first (called A1) database are the
whole datas but I'm interesting in one table tbl1 (with 20 attributes). To
communicate with the DB A1 I have a lib, which gives me a dataset of this
table tbl1 (with all attributes).
This dataset i would like to give the lib for my second DB A2. In this DB A2
is a table tbl2 which has just some of the...
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by: muntyanu |
last post by:
Hi all,
I have problem when merging existing DataTable into new dataset.
DataSet ds = new DataSet();
while ( done )
{
// fill myCustomDataSet.MyTable with data
ds.Merge( myCustomDataSet.MyTable, bPreserveChanges,
MissingSchemaAction.Add );
ds.AcceptChanges(); // tried with and without this line
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by: Al |
last post by:
I have this scenario:
1. XML file with schema and data is created from SQL Server tables. XML file
contains 6 tables, some of them have rows, some of them are empty.
2. XML file is given to the person with Pocket PC.
3. XML file is used to populate DataSet on the Pocket PC.
4. User adds new rows, changes values, deletes some rows.
5. Altered dataset is saved back to XML file.
6. XML file is given back to the person who initially created...
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by: matt |
last post by:
hello,
i have a web app that allows users to query our oracle db and produce a
dataset of report data. they then have the option to serialize this
data and store it in the database. later, then can re-run the report
and get fresh data. now, they would like to be able to compare the
fresh data to the stored data, getting a break-down of
added/deleted/changed rows.
on the surface, this sounded plausible -- by deserializing the stored
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by: Benny Ng |
last post by:
Dear All,
Now i have a two dataset. they have same db structure and same columns and
same rows.
just the content is not same between them.
for example:
datagrid 1:
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by: Mark Chambers |
last post by:
Hi there,
Can anyone explain the following (very) simple scenario.
1) I make an exact copy of my "DataSet" and delete one record from a given
table (in the copy)
2) I invoke "DataSet.GetChanges()" on the above copy and pass the results to
"DataSet.Merge()" on the original copy
3) If I now inspect the original copy, it shows that the record has *not*
been deleted from the table. However, a call to "GetChanges()" does show my
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by: Franck |
last post by:
how come unchanged always true even if data changed
This code come from my saving button:
============================================
DataSet ds1 = new DataSet();
DataSet ds2 = new DataSet();
DataSet ds3 = new DataSet();
//Static Dataset which contain values when my form load
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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,...
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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...
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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...
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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...
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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...
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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();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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