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by: Jade |
last post by:
Hi,
I just wanted to ask a quick question regarding datasets.
I am creating 3 tables using a dataadapter. what i want
to know is that is the relationship created between these
datatables automatically?? Will the integrity rules
automatically be enforced or do i need to recode this in
vb.net?
Also do the datatables created have the same schema as my
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by: Adam Clauss |
last post by:
Alright, as much as I've done CSharp, I've done very little with databases with it. So I'm just kind of messing around with,
learning how it works.
I am using the ADO.NET adapter provided with MySQL in a very simple web application.
I have the connection, data adapter, and typed datasets created. In response to a button submit, I perform the following:
accountsDataAdapter.Fill(accountsDS1);
Label_Accounts.Text =...
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by: Z D |
last post by:
Hello,
I'm currently using Remoting (HTTP/Binary) to remote a simple object.
Everything is working fine except for one function that returns an arraylist
of datatables.
When I call this function, nothing is returned (ie length of array =0).
However, if I comment out my config file so that the DLL is run locally
instead of remoting it, everything works fine!!
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by: Guadala Harry |
last post by:
I'm trying to design all of my data access logic into one centralized
assembly. I'm wondering how to implement DataReaders.
There's plenty of documentation on passing DataSets to the client from the
middle tier... but what about DataReaders? Do I have to bypass the
centralized data access assembly when I want to use DataReaders?
Thanks.
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by: psb |
last post by:
I thought this was weird?? is this a bug in framework 1.0??? (1.0 is the
version I am running against)
---------------------------
dim dtAll as new datatable
dim dtTmp as datatable
dtTmp = LoadDataTable("select top 100 from table...")
for i=0 to dtTmp.rows.count -1
''''ERROR ON THIS LINE'''
dtAll.Rows.Add(dtTmp.rows(i))
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by: Ryan Ternier |
last post by:
I know how this should be done in regards to nTier, but it seems a bit
inneficient, and was wondering if there's a solution that I havn't thought
of yet.
(I'm switching this loop to For Each Row as DataRow in.... to kill the one
int that's not needed.)
For intCount1 = 0 To
objData.DataSet.Tables("tblSecondaryNumbers").Rows.Count - 1
rowTemp = objData.DataSet.Tables("tblSecondaryNumbers").Rows(intCount1)
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by: John Dalberg |
last post by:
I noticed the starterkits timetracker & issue tracker load data from a
database into custom collections (arraylists) which bind to a datagrid.
What are the advantages of using custom collections over simpler objects
like datareaders or datatables?
John Dalberg
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by: cj |
last post by:
I've used datatables and datasets before. Datasets being able to hold
more than one table and datatables being only one table. My mind keeps
coming up with recordsets. I can't remember how they fit into the picture.
I'm going to be reading some records from a table in a sql db.
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by: Doug |
last post by:
If I am grabbing a lot of rows (say 10,000 from SQL) would I be helping
or hurting the network by using a DataReader? I would think helping
because it's really only returning 1 row at a time, but I'm not sure.
Are there good articles out there that explain how the DataReader does
this as well as any that discuss performance problems/benefits?
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by: balabaster |
last post by:
I have my SQL database with the following structure:
Table1(
PrimaryKey Int Not Null Identity(1, 1) Primary Key,
TextData Varchar(50) Not Null
)
Table2(
PrimaryKey Int Not Null(Identity(1, 1) Primary Key,
ForeignKey Int Not Null Foreign Key References Table1(PrimaryKey),
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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: 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...
|
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: 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: 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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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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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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