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by: grist2mill |
last post by:
I have a simple table, for some reason, certain columns seem to accept
Nulls even though they shouldn't, for example the I can set the 'Name'
field to Null using my web application or directly in Enterprise
Manager. field How do I prevent this? However the 'RecCreated' doess
not permit nulls.
CREATE TABLE . (
IDENTITY (1000, 1) NOT NULL ,
(50) NOT NULL ,
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by: Thomas Coleman |
last post by:
I have been playing around with 2.0 and I'm trying clarify a few things about
generics and data access. I was hoping to be able to do something like this with
nullable types:
int? foo = null;
DataRow dr = ...;
dr = foo;
However, this does not work if the DataType value is set to int. In that
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by: Salad |
last post by:
A97.
Situation: I have 3 tables with a text field in each and a date field
in the first 2 tables:
Table1 Text1, Date1
Table2 Text2, Date2
Table3 Text3 (no date field)
The following makes up a saved query called Query1
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by: Drew |
last post by:
I have been using System.Text.Encoding.Unicode.GetString(byte,0,72)
to converter a byte array from the registry to a string.
This works, but I end up with a bunch of null characters after
the "good" string data that I need to parse. This is evidenced
by the fact that string.length returns 36 when the actual string
data I need to work with is usually much less.
I tried using String.Trim(null) but this doesn't achieve the desired result.
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by: tshad |
last post by:
I have people telling me that I should set up objects for my tables, but I
am finding the Null problem makes that difficult.
It isn't a big problem if you are not updating the table, but if you are -
it is a real problem if you have Nullable fields. You can't always use a 0
or -1 to tell whether a field is null and dates are another problem. I
don't want to use some obscure date in the future for something like
"EndDate" or...
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by: Mike |
last post by:
The current databas structure that i'm working with allowed NULL's an now
I'm converting the app to .NET and it will not allow NULLs in the fields
when populated.
So my question is, how can i hande NULL's being pulled from the DB now?
When I try to access a page and if the field is NULL I get an error:
i do i fix this? I'm using VB.NET for coding
Cast from type 'DBNull' to type 'String' is not valid.
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by: Angela |
last post by:
Hi
I am building a very simple data entry system with many forms and
input textboxes.
When I leave any part of the form empty (it allows nulls) it seems to
touch the field in the DB and the field is no longer NULL.
I have written a script to test for empty textboxes and insert DB.NULL
which is fine but when I want to load the data back into the form
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by: buc |
last post by:
I have created a byte array (1000 in size) to recv a network packet. I recv
the packet, which varies in size, and need to put the packet in a string; so
I can append another string after the packet string. The problem is the
packet string apparently has nulls or something in the unused space up to
1000. and of course when I append a string AFTER the packet string it
doesn't display.How can I stick a b yte array into a string removing the...
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by: Angus |
last post by:
Hello
I have a stream of bytes - unsigned char*. But the 'string' may contain
embedded nulls. So not like a traditional c string terminated with a null.
I need to calculate the length of these arrays but can't use strlen because
it just stops counting at the first null it finds. so how to do it?
Angus
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by: =?Utf-8?B?ai5hLiBoYXJyaW1hbg==?= |
last post by:
Hello,
I've eliminated the bulk of code, this should be sufficient:
byte fromEncrypt;
string sDecryptedString;
//Read the data out of the crypto stream.
csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);
//At this point in the debugger, I can see there are "trailing" NULLs '\0'
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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...
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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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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