by: djc |
last post by:
I have typically always used one of the VB CType functions (not CType itself
but CInt, CString, etc...) to cast/convert an input value to its proper type
before passing it as a parameter to a SQL...
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by: Tina |
last post by:
I have instantiated an insertRow for a dataset. I now want to make the
GLCode DBNull.
I have tried:
insertRow.GLCode = Convert.dbnull
insertRow.GLCode = Convert.dbnull(insertRow.GLCode)
and...
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by: MattB |
last post by:
Hello. I have a vb.net (asp.net) application that uses ado.net datasets.
At one point, I need to check a text field in a DataTable to see if there's
any text in it before performing text operations...
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by: Bob |
last post by:
I'm sure there's a good reason, I just haven't been able to think of it -
why didn't MS allow "DBNull" values to simply be a null (Nothing)?
Bob
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by: tshad |
last post by:
I have a value coming from my Object (or it could also be from a
SqlDbReader) where I need to test for DBNull and 0.
I tried to do it in one call:
if (not (newPosition.ReportsTo is...
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by: Tyler Durden |
last post by:
Hi,
I have this annoying problem with a cast failing from a DAL that was created
in 1.1 that I have included in a 2.0 app.
Every stored proc in our system uses an integer parameter to return...
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by: Mike |
last post by:
When using a DataReader to return records from a SQL server, I'm having a
problem with the following code (abbreviated)
int ID = 0;
ID = (int)dr;
will work if the user_id column is an int...
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by: .Net Sports |
last post by:
I'm trying to match fields from XML feed to a datarow, but I get a
"System.InvalidCastException: Object cannot be cast from DBNull to
other types" error at the PkgAmount line. This code was...
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by: cj |
last post by:
in the command window I get:
? result
{System.DBNull}
: {System.DBNull}
I need to check for this in code. I then tested in the command window
if result = system.DBNull
'DBNull' is a type...
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by: Dave |
last post by:
If Iwant to check if dataset1.SelectQuery1.column1 ==
System.DBNull.Value. How do I do this? What I wrote above will give an error.
--
L. A. Jones
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by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
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by: Sonnysonu |
last post by:
This is the data of csv file
1 2 3
1 2 3
1 2 3
1 2 3
2 3
2 3
3
the lengths should be different i have to store the data by column-wise with in the specific length.
suppose the i have to...
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by: Hystou |
last post by:
There are some requirements for setting up RAID:
1. The motherboard and BIOS support RAID configuration.
2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
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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,...
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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...
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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,...
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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...
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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...
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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,...
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