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by: John Holmes |
last post by:
I have a web interface where the user types in ID's one at a time. After an
ID is typed in, a button is clicked and the button click event has code that
does a query and returns a data reader and then appends the data to a
dataset that is built in the Page_Load code in the if(!isPostBack) block.
When I try to add a row in the button click event code I get an error saying
that "Object reference not set to an instance of an object". I'm...
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by: Bill |
last post by:
I have a strong typed dataset which I load using the following code.
try
{
XmlTextReader xmlTR = new XmlTextReader("XIF-v1.0.xsd");
dsMyDataSet.ReadXmlSchema(xmlTR);
if (p_FileName != string.Empty)
{
_FileName = p_FileName;
dsMyDataSet.LoadData();
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by: Marco Martin |
last post by:
Hi everyone,
I've got a dataset with a records table that is built up from scratch
according to user input. I'm saving this dataset as xml by using
dsRecords.WriteXml(dlgSave.FileName,XmlWriteMode.WriteSchema);
The first problem I had was that all hidden columns (ie: recordID) values
were not written to file. So I set the mapping types of the hidden columns
back to "Element" just before saving.
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by: Bill |
last post by:
I have a DataSet that is serialized to a local disk. One of the testers
recently experienced a problem where data was saved and the Tablet PC she
was testing later went offline. When she restarted the system, the XML
DataSet appears to have been corrupted and the application is generating an
error "This is an unexpected token. The expected token is 'EndElement', line
26680, position 24."
She has not returned the Tablet, so I haven't had...
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by: Jason |
last post by:
I am having problems understanding how to access a datasource only
once, fill a single dataset, and then reference that dataset multiple
times through different user controls(ascx) found on the same page.
My main page(aspx) contains multiple user controls. The main page also
contains a publicly declared dataset. At the first instance of needing
data I call (from an ascx) a function that fills the dataset and then
returns it to the...
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by: Bernard O'Flynn |
last post by:
Hi
I have a pivot table that gets it data from another worksheet in the
workbook.
I need to update the data worksheet from data in a database (I'm using MS
Data Application Block) and get a dataset with the data in it.
I need to know how to open the workbook, delete all the data in the data
worksheet, update the data worksheet from the data in the dataset and then
allow the user to download the new excel workbook.
Anyone have any ideas...
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by: Vik |
last post by:
A dataset is saved in session state. Then the dataset is filled out with the
new records using a dataadapter. It appears then that the dataset saved in
session state contains the new records even without saving the updated
dataset.
Why does this happen? How can I preserve the dataset saved in session state
from automatical updating?
Thank you.
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by: Nikhil Patel |
last post by:
Hi,
I bind a grid to a DataView object. I lose the reference to the underlying
DataTable and the DataSet in a postback.
Here is the code. Page_Load works fine and I am able to see the rows in grid
and edit them. But I don't know how to save the data back to the database
when the user clicks on a Button. Thanks.
private void Page_Load(object sender, System.EventArgs e)
{
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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: Lucvdv |
last post by:
This would better be described by 'serialization' than 'interop', but I
didn't find a newsgroup that seems closer on topic.
The problem in a few words: I save data with DataSet.WriteXML, but I get
different data back when I read it later with DataSet.ReadXml.
More detail:
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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: 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: 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: 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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