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by: Eric Petruzzelli |
last post by:
If I fill my dataset and there is no data. The dataset is still created
with zero rows (all columns are there). When I add my first row using
the script below, it takes over 2 seconds to add??? If I add the second
row, instant.
How can I eliminate this delay?
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by: IMS.Rushikesh |
last post by:
Hi All,
I want to serialize an object which contain the DataTable. As DataSet
is MarshalByRef object and is serializable. I am using it directly.
Even my data is also serialize and save it to XML file.
Now as DataSet serialize, it's creating some extra information (schema
information), And i don't need that. I only want to store the data in
XML format. I don't want to store extra details like namespace etc...
As it's increase XML file...
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by: Marko Maehner |
last post by:
Hi,
I have a strange problem with my xml file. In the schema of this xml
file I have set one column to autoincrement. When I enter the data in
my xml file directly, the autoincrement-column gets its correct
values.
Now I want to add new data with the help of a dataset. I use the
following lines of code:
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by: nima |
last post by:
Hi
I have two tables in my database. PRODUCT and PRODUCT_GROUP. PRODUCT has a foreign key to PRODUCT_GROUP. I generated a typed dataset using VS.net and added a relationship between the two tables. When I call my get WebMethod for the PRODUCT table I get the System.Data.ConstraintException exception. The get WebMethod for PRODUCT_GROUP works fine. When I remove the relationship the get WebMethod for PRODUCT works fine too. Both tables...
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by: Leo |
last post by:
Thanks for the Help in Advance!!
I am a beginner in VB.Net. I am trying to create a form which is displayed in a email for our customers to fill in a Request for quote. I would like them to type data into fields and have it added to the Datagrid.
I am constantly getting the error Column 'OALen' does not belong to table .
Any Ideas?
Public tblJobItems As New DataTable
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by: Art |
last post by:
Hi everyone
I was hoping someone might be able to help me with this. I'm just starting to try to work with MS Access tables through VB.net. In Access I can take an existing table and add a new field with the type AutoNumber. I can then set this up as a key. Then if I go into the table I will see sequential numbers have been inserted into that field for me. Can I do this through VB.net
I'd appreciate any help or alternative suggestions...
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by: Dennis |
last post by:
I have set a DataTable and one of the columns I set "AutoIncrement" to True.
I then populate the Table by setting the columns to values then add the row
to the table. I inadverently set the AutoIncrement Columns to different
values but didn't get any errors. Should I be able to set the value of an
AutoIncrement Column? I would have thought it couldn't be done as the column
value was set when a row was added.
--
Dennis in Houston
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by: JMO |
last post by:
I can import a csv file with no problem. I can also add columns to the
datagrid upon import. I want to be able to start importing at the 3rd
row. This will pick up the headers necessary for the datagrid. Once I
can get to that point I need some way to be able to add new data only
to the new columns that were added.
Here is some of my code:
//Function For Importing Data From CSV File
public DataSet ConnectCSV(string filetable)
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by: nmm32 |
last post by:
I have a DataGrid which displays data with the aid of a procedure.
I have tested the procedure inside the database and it is working fine.
I have another procedure which adds another row to the table, which is working fine inside the programming, and in the database.
However, I still cannot figure out what am I doing wrong with the DataGrid configurations OR Database OR DataAdapter OR SqlSelectCommand ... I really don't know yet and I...
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by: cms3023 |
last post by:
I have a DataGrid which displays data with the aid of a procedure.
I have tested the procedure inside the database and it is working
fine. The table inside the database has data that matches with the
parameter.
I have another procedure which adds another row to the table, which is
working fine inside the programming, and in the database.
However, I still cannot figure out what am I doing wrong with the
DataGrid configurations OR...
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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: 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...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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: 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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