473,791 Members | 2,725 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

SqlDataSource - how get first row in SELECT?

I have a sqldatasource on a webform. How do I (in code) retrieve the value
of a particular column in the first row? Do I have to save the
sqldatasource SELECT results into a datatable and look at it that way? A
code sample would help.

Thanks!
Feb 22 '06 #1
6 3378
You have a number of solutions, here are a few:

You could use an SQL statement such as "SELECT TOP 1 [column name] FROM
[table name];" then use the ExecuteScalar Method.
http://msdn.microsoft.com/library/de...calartopic.asp

You could use an SQL statement such as "SELECT [column name] FROM
[table name];" and a DataReader to read the first row.
http://msdn.microsoft.com/library/de...ClassTopic.asp

You can fill a DataTable with the SELECT results, but you are not bound
to that single technique. Code examples can be found on the proceeding
links.

Feb 23 '06 #2
sorry. proceeding = preceding on last post.

Feb 23 '06 #3
In ASP.NET 2.0 it seems like I'm so close to already having the data with
the new SqlDataSource object. Am I missing something?

<ka*****@gmail. com> wrote in message
news:11******** **************@ g44g2000cwa.goo glegroups.com.. .
sorry. proceeding = preceding on last post.

Feb 23 '06 #4
Could you show some code? Maybe that would help...

Feb 23 '06 #5
That's what I want.

I have a webform with 1 item on it: An SQLDataSource that has a SELECT
statement.

I just want to retrieve (Page_Load) a field in the first record of the data
result set. Any ideas?

Again, this is 2.0...

<ka*****@gmail. com> wrote in message
news:11******** **************@ g14g2000cwa.goo glegroups.com.. .
Could you show some code? Maybe that would help...

Feb 23 '06 #6
Do you want to return only one value after executing the query -
ExecuteScalar returns the first field in the first row
Is that what you want?
Patrick

"VB Programmer" <do**@emailme.c om> wrote in message
news:eK******** ******@TK2MSFTN GP12.phx.gbl...
That's what I want.

I have a webform with 1 item on it: An SQLDataSource that has a SELECT
statement.

I just want to retrieve (Page_Load) a field in the first record of the
data result set. Any ideas?

Again, this is 2.0...

<ka*****@gmail. com> wrote in message
news:11******** **************@ g14g2000cwa.goo glegroups.com.. .
Could you show some code? Maybe that would help...


Feb 23 '06 #7

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

5
4481
by: Martin Bischoff | last post by:
Hi, is it possible to modify the values of a SqlDataSource's select parameters in the code behind before the select command is executed? Example: I have an SqlDataSource with a ControlParameter <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:XYZ %>"
8
5043
by: Mike Kelly | last post by:
I've chosen to implement the "optimistic concurrency" model in my application. To assist in that, I've added a ROWVERSION (TIMESTAMP) column to my main tables. I read the value of the column in my select, remember it, and then use it in the update. It works just fine when I have full control of the whole process. I want to do the same for my GridView/SqlDataSource combinations. I typically select from a view and update the corresponding...
2
5191
by: alain.hogue | last post by:
I have a table "tblCards" with a field "Titre" that contain french words (Hébert, Gagné, Hélène, etc....) in an database with SQLEXPRESS 2005. I have used the asp:SqlDataSource to filter the SELECT statement according to a Textbox the user can type into. When used with the LIKE condition using any acute caracters the SELECT statement return nothing, unless the acute caracters is replaced with an ampersand "%". Even the underscore "_"...
1
6518
by: Henry Habermacher [MVP Access] | last post by:
Environment: VS2005, ASP.Net 2.0, SQLServer 2000, VB.Net, IIS6 I use a GridView Control which is based on a SQLDataSource. The datasource is based on a Select statement and is filtered by the FilterExpression. The GridView also has a pager element (below, displaying first, previous, next, last icons), paging is enabled, page contains 10 rows. The user now skips some pages by clicking a view times on the next icon. Now he changes the...
0
3384
by: cyberbless | last post by:
I would like to dynamically assign a Select Statment to a a SqlDataSource. Problem is the SqlDataSource.Select() Command requires a "dataSourceSelectArgument" as one of its arguments. 1. What if I don't have an argument to give to out our the Select Statement. Or if the arguments are pre-assigned. Take the following lines of code for example. --------------------------------------------------------- SqlDataSource.InsertCommand =...
7
1759
by: | last post by:
I'm using ASP.NET 2.0, C#, SQL Server 2005, and databound controls like the DataList and the GridView. Right now I'm using SqlDataSource as part of very quick and dirty site; I'm not looking to tier things. I want the topmost/first data element in a particular control to NOT be displayed. This should be possible by either telling the renderer to hide the first element programmatically, or by deleting it from the data store that it has...
3
3494
by: Dave | last post by:
Hi I am using .NET 2 with c# and want to retrieve a single value from my stored procedure. I currently have the following code: --------------------------------------------------------------------------------------------------------------------------------- ConnectionStringSettings connectionSettings = ConfigurationManager.ConnectionStrings;
6
2052
by: Ken Fine | last post by:
I'm using SQLDataSource, which generates some kind of dataset, and then I attach that datasource to various data display controls such as DataList and repeater which loop through to the end of the data that was retrieved by the query. At times I may want the display control only to render some items in the set of data returned by SqlDataSource. There would be several scenarios: * render the second data item or third item in to the end...
2
2088
by: Julien Sobrier | last post by:
Hello, I have 2 SqlDataSource on the same page that retrieve the same column names: <asp:SqlDataSource ID="SqlStructure" runat="server" SelectCommand="SELECT a, b FROM c WHERE d = 0 /> <asp:SqlDataSource ID="SqlSons" runat="server" SelectCommand="SELECT a, b FROM c WHERE d = 74" /> The problem is that Eval("a") always return the value from SqlStructure.
1
1400
by: ken | last post by:
Hi All, I try to using the dotnet control instead of code behind to create a quick solution (ASP.NET with VB.NET) by using the SqlDataSource and GridView control (with SelectCommand, DeleteCommand, UpdateCommand, InsertCommand) It works fine when drag and drop in the first time. but after I have modify something (said, add parmeters for searching...etc), the UpdateCommand and
0
10426
Oralloy
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...
1
10154
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,...
0
9993
tracyyun
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...
1
7537
isladogs
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...
0
6776
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();...
0
5430
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...
1
4109
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
2
3713
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2913
bsmnconsultancy
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...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.