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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: William Ryan |
last post by:
I just picked up a copy of John Robbins' debugging book and started to look
at disassembled code. Anyway, I hate optional Parameters in VB, but I was
checking them out to see what IL is created. I've done this before with
Modules, and saw that <gasp> they behave just like sealed classes with only
static members.
Anyway, it looks like Optional Parameters are nothing but a way to tell the
compiler to write some overloads for you. So, in...
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by: Ravikanth[MVP] |
last post by:
Hi
Alternative is check before assigning as TextBox value.
TextBox1.Text =myRow==DBNull.Value)?"":
(string)myRow
HTH
Ravikanth
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by: Dursun |
last post by:
Hi,
I am trying to assign NULL to a datetime field in the SQL Server database.
Here is the code that does NOT work:
INSERT INTO ...
....
VALUES ...
....
CType(IIf(dateWitness2Date.Checked, dateWitness2Date.Value, DBNull.Value), DateTime), & ...
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by: cody |
last post by:
I got a similar idea a couple of months ago, but now this one will require
no change to the clr, is relatively easy to implement and would be a great
addition to C# 3.0 :)
so here we go..
To make things simpler and better readable I'd make all default parameters
named parameters so that you can decide for yourself which one to pass and
which not, rather than relying on massively overlaoded methods which
hopefully provide the best...
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by: pamelafluente |
last post by:
Hi guys,
In the past I have used several time optional parameters in my
function.
But Now I am more inclined to think that they are more dangerous than
useful, and probably better to be avoided.
I'd like to hear your various opinions on this matter.
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by: Brent |
last post by:
We are gradually upgrading our vb6 code to .net. A lot of our shared modules
in vb6 we are upgrading to .Net dlls that are shared. One problem we have is
that we have VB6 modules that have optional parameters that default to null.
Of course interopt converts these to dbnull. The only problem with dbnull is
that you can not use it as a default for a parameter since it is not a
constant. Is there anyway to get around this? Currently we use...
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by: Martin Z |
last post by:
INSERT INTO dbo.Transmission
(TransmissionDate, TransmissionDirection,
Filename, TransmittedData)
VALUES
(@TransmissionDate,@TransmissionDirection,@Filename,@TransmittedData);
SELECT @retVal = SCOPE_IDENTITY();
Pretty simple. There is an additional TransmissionID column that is
an autonumber and primary key. @retVal is always null in my table
adapter function, where I'm setting @retval (in the Parameters
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by: jamesclose |
last post by:
My problem is this (apologies if this is a little long ... hang in there):
I can define a function in VB.NET with optional parameters that wraps a SQL procedure:
Sub Test(Optional ByVal Arg1 As Integer = 0, _
Optional ByVal Arg2 As Integer = 0, _
Optional ByVal Arg3 As Integer = 0)
' Call my SQL proc with the same signature
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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: 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: 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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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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