Normally Google is my friend, but I can't seem to work this one out. I'm
sure it's really simple as well.
I normally create a dataview from a table within a dataset using the
..defaultdatavi ew method of the table (eg dv=ds.tables(0) .defaultdatavie w)
I want to create a dataview that is limited to only certain columns of the
datatable.
Anybody got a quick example to get me going?
Thanks in advance
Simon
4  4831 
Have you tried using the RowFilter method of the dataview to limit the data
after the fact?
"Simon Verona" <no****@nomail. zzz> wrote in message
news:Oc******** ******@tk2msftn gp13.phx.gbl... Normally Google is my friend, but I can't seem to work this one out. I'm
sure it's really simple as well.
I normally create a dataview from a table within a dataset using the
.defaultdatavie w method of the table (eg dv=ds.tables(0) .defaultdatavie w)
I want to create a dataview that is limited to only certain columns of the
datatable.
Anybody got a quick example to get me going?
Thanks in advance
Simon
Simon Verona wrote: Normally Google is my friend, but I can't seem to work this one out. I'm
sure it's really simple as well.
I normally create a dataview from a table within a dataset using the
.defaultdatavie w method of the table (eg dv=ds.tables(0) .defaultdatavie w)
I want to create a dataview that is limited to only certain columns of the
datatable.
Anybody got a quick example to get me going?
Thanks in advance
Simon
I guess my question is why you want to do this?
The dataview is just a filtered view of the table. It limits what rows
you see. Whatever you are using to display the data (datagrid?) should
be limiting the number of columns you see. The data is not copied when
you use a dataview, it is still pointing to the same datatable and
therefore needs the same structure.
Chris
Simon,
It is as Chris write, however I have seen this question more, therefore I am
curious why you ask this?
(You can hide a column of a datatable with the columnmapping, however it is
than for all dataviews)
Cor
You are correct, I can alter the display using the datagrid that I'm using
(it's actually Component One's truedbgrid that I'm using).
Just was thinking that it might be easier and quicker to remove the column
from the dataview that I'm creating - this is a view only grid so there will
be no updating/deleting etc.
I found the columnmapping property and I'm experimenting with that,
otherwise I'll choose the columns on the datagrid itself.
Thanks for the thoughts
Simon
"Cor Ligthert [MVP]" <no************ @planet.nl> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. .. Simon,
It is as Chris write, however I have seen this question more, therefore I
am curious why you ask this?
(You can hide a column of a datatable with the columnmapping, however it
is than for all dataviews)
Cor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: John Smith |
last post by:
Hey folks,
I have a Global DataSet which I use across my application. I use a DataView
to give me the data that I want in a certain instance.
Is there a way I can create the DataView so that it has only some of the
columns of the DataSet (i.e. not all of them)?
If not, can I reorder the columns? Like, can I specify that I want "myCol"
to be the second column?
|
by: Phil Townsend |
last post by:
I have a dataview that is generated from a dataset which gets its data
from an xml file. I would like to use the dataview to include only
certain columns in the result set. The xml file contains 7 seven columns
and I need my dataview to contain only five of them. Is the dataview the
right control to do this? Thanks...
*** Sent via Developersdex http://www.developersdex.com ***
|
by: Alpha |
last post by:
I have a listbox with datasource from a dataview. When a user selects a
different item in a combobox then I need to refresh the listbox to the
appropriate listing based on that combobox's selected value which is included
in the listbox's filtering statement.
Is the only way to do this is to dispose the dataview and then create a new
one and then bind it to the listbox? Is there a better way than this?
Thanks, Alpha
|
by: Dave Hagerich |
last post by:
I'm using a DataGrid with a DataSet and I'm trying to filter the data being
displayed, using the following code as a test:
DataView theView = new DataView(theDataSet.Tables);
theView.RowFilter = "'Record ID' = '0'";
theView.RowStateFilter = DataViewRowState.ModifiedCurrent;
Debug.WriteLine(string.Format("RowFilter = {0}", theView.RowFilter));
RecordDataGrid.DataSource = theView;
RecordDataGrid.DataBind();
|
by: Steve |
last post by:
I have a form with a dataset and a datagrid.
I created a dataview on this dataset.
When the user modifies the datagrid, I look up this record in the dataview
to make sure it is unique.
Here is the confusion.........
I thought that the DataView is the view from the dataset, but it seems that
the dataview has the records that are in the datagrid, because everytime I
search for a record that I know is NOT in the dataset, it finds it. I...
| | |
by: David Wender |
last post by:
I want to create a dataview with a sort on multiple columns. However,
when I use FindRows, I only want to search some of the columns, not
all. Is this possible? I have not been able to make it happen.
Dim objKeys(2) as Object
objKeys(0) = "CL"
objKeys(2) = 4000
Dim posView As DataView = New DataView(posDS.Tables("Positions"), _
|
by: Nathan Franklin |
last post by:
Hello Guys,
I have been trying to work this our for so long, but I just can't seem to
find the answer.
I am loading a datatable from a an access database using an
oledbdataadapter. I then assign the datatable.dataview to my
datagrid.datasource member so it will display my results..
I need to give the user an option to change the order of this data, I have a
|
by: Nick |
last post by:
I have a code that returns data in IList. My webGrid doesn't allow me to
sort with IList returned, it say it only suports DataView, DataTable and
DataSet, not IEnumerable. I don't know how to return the DataSet type when
using the following code:
======== this is my interface ======================
namespace WareHouse.DataLayer.DataObjects
{
/// <summary>
/// Defines methods to access categories and products.
|
by: hzgt9b |
last post by:
Using VS2005, VB.NET,
I know that I can use a DataView to constrain what rows are "seen"
from the underlying datatable - is it also possible to use a DataView
to constrain what columns/attributes "seen" from the underlying
datatable? If so, can you point me to an example.
Thanks for your attention to this...
|
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: 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: 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();...
|
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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| | |
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...
| |
