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by: DraguVaso |
last post by:
Hi,
Something I don't understand about a Typed DataSet: When a value in the
DataSet is DBNull, it throws this error: "Cannot get value because it is
DBNull".
But aren't Typed DataSets invented to make life easier, to be able to get to
tge Tables and Values with less code, in less time? But with this thing you
need to add a Try-Catch around every statement when using the value, add for
each value a default value in your DataSet (and...
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by: Andreas Palm |
last post by:
I have a dataset that has DBNull in certain columns, now when I write
out this one to XML, I only get the columns as elements that do have
data in it. However I do need also the empty colums as empty elements
in the XML. How to do that ?
I don't understand why there is no simple option to specify the output
format, or did I miss something ?
regards
andreas
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by: Mikhail Teterin |
last post by:
Hello!
Consider the following simple accessor function:
typedef struct {
int i;
char name;
} MY_TYPE;
const char *
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by: drg |
last post by:
I have a DataSet with a DateTime field. I am using an EventRow r, to update
it with values from a TextBox in a DataGrid. Suppose a DataGrid in edit mode
had a field with value: 7/7/2005. Then the user deletes this value. Now, I
want to update the DataSet (I know how to update the database) with a
statement like this: r.MyDate = null. However, I can't seem to find the
syntax to do this. Thanks!
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by: excelleinc.com |
last post by:
Hi,
I'm trying to check if field contains NULL value in MSSQl 2000 database but
keep receiving error.
asp.net code:
If Trim(HLSQLDSet.Tables("mfglinks").Rows(15).Item(0)) Is Null Then
URLSurgeS.Visible = "False"
End If
|
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by: Patient Guy |
last post by:
Does anyone have any coding rules they follow when doing argument checking?
When arguments fail during check, do you return from the call with an
ambiguous return value, or do you throw exceptions?
|
by: mcbobin |
last post by:
Hi,
Here's hoping someone can help...
I'm using a stored procedure to return a single row of data ie a
DataRow
e.g.
public static DataRow GetManualDailySplits(string prmLocationID, string
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by: Karch |
last post by:
I find myself doing things like this all the time:
if (
SomeObject != null &&
SomeObject.AnotherObject != null &&
SomeObject.AnotherObject.YetAnother != null &&
SomeObject.AnotherObject.YetAnother.HelpMePlease != null)
{
// Do Something
}
|
by: GotDotNet? |
last post by:
I have a dataset and I have to loop through it and some of the values for an
insertition into the db. Some of the fields are integers and booleans but
contain a NULL in the field.
how can I check for a NULL and if its NULL insert DBNull into the db?
Currently I'm getting error message
System.DBNull.System.IConvertible.ToBoolean()
now i need to get this field and insert a NULL into the db is the values
|
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...
|
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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...
|
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...
|
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: 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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