I have a list box that is bound to an object data source. I added a column,
say ColumnC, to my typed data set (using the designer) and for the expression
property I entered
ColumnA + ': ' + ColumnB
When I preview the data in the designer I get exactly what I want.
Now I go over to the object data source on my web page, refresh it and
refresh the schema. I can now see ColumnC as an option for the list box's
data text field. However, when I run the page nothing shows up in the list
box. However, when I view the page source, I see that the data value field
did render.
Next I put in a value (instead of the default DBNull) for the DefaultValue
property. After going through the whole exercise of refreshing and such
again, I run the page and the default value I put in is returned in the list
box.
Does anyone know what I missed? It must be something stupid.
Thanks ...
0  1266  This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: J |
last post by:
Situation - Using the table pubs.titleauthor in a strongly typed dataset,
attached to a datagrid, using the datagrid I would like to set the
royaltyper field = null (the database allows nulls in this field). But when
click on the cell and remove the field value (leaving a blank), and move to
the next record, the blank cell is filled with the original data.
When I view the schema (.xsd file) of the strongly typed dataset, and try to...
|
by: Bennett Haselton |
last post by:
It seems whenever I add a new field to a database table that's queried
by DataAdapters in my project, I get run-time errors because I don't
go back and re-generate all the DataAdapters to read the new field.
When I first generate the DataAdapter using the wizard, the list of
fields in the database table gets hard-coded into the SelectCommand:
SELECT ID, username, password_hash, email_address, datetime_created
FROM wbuser
|
by: Freeon |
last post by:
Hi, I am looking for a way to sort a strong typed dataset. It would seem the most straightforward way is to use a dataview. The only problem is when I use the dataview I seem to loose the strong typed properties from my original dataset
Anyone that can point me to an example of how to sort my dataset and maintain the use of my typed properties would be greatly appreciated
Thank,
Freeon
|
by: Optimus |
last post by:
Hi everyone,
I currently develop an application in vs.net 2005 with vb.net.
I was trying to use typed dataset and I've got in trouble for
converting untyped dataset
into Typed DataSet. I don't know why I cannot perform this casting
operation properly.
First off, I've got my Typed DataSet named "AuthInfo" declared and I
then created an instance of that class. What I'd like to do next is to
perform querying through the method...
|
by: Dabbler |
last post by:
I'm using an ObjectDataSource with a stored procedure and am getting the
following error when trying to update (ExecuteNonQuery):
System.Data.SqlClient.SqlException: Procedure or Function 'UpdateRegistrant'
expects parameter '@EMail', which was not supplied.
The field value was null in the database and not changed in the FormView so
is null going back into the stored procedure. I'm stumped and would greatly
appreciate any suggestions.
| | |
by: mirco |
last post by:
Hi,
I have created a Typed DataSet. The DataTable is (distrimarket.DatiDT).
Then a GridView is populated. The last column is computed and it is the
difference between the previous two. I get this error: Unable to cast object
of type 'System.Data.DataRow' to type 'DataTable1Row'.
Could you tell me what is wrong please ?
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{
|
by: Ronald S. Cook |
last post by:
I've always used untyped datasets. In a Microsoft course, it walks through
creating typed datasets and harps on the benefits. It has you drag all
these things around ..wizard, wizard, wizard... code gen, code gen, code
gen.
What's at the end looks slick, but then there's a ton of generated code that
I'm going to have to maintain now.
I.e. I like typing things myself (don't like wizards) so I can know exactly
what I've done.
|
by: Aamir Mahmood |
last post by:
Hi All
I have DataTable object. Is there a way that I can know which fields
(columns) in the table are computed.
Apparantly the DataTable.Columns returns all columns both computed and
other.
Any help would be appreciated.
|
by: Rachana |
last post by:
Hi,
I have understood Data Sets but what is meant by typed/untyped/
strongly typed datasets. Can any one explain me or suggest any site/
article, to get these concepts (and their comparisions) cleared?
Thanks,
Rachana
|
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,...
|
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...
|
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,...
|
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...
|
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...
| | |
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...
| |
