all groups > dotnet ado.net > july 2005 > threads for july 1 - 7, 2005
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View SQL Server Tables in ASP.net/ADO.net
Posted by Allison Thomas at 7/7/2005 5:14:58 PM
I am trying to list the tables in a SQL Server database on an ASP.net page
but can't seem to find out how to do it. The old ADOX did it for Access data
bases and I presume SQL Server but this seems like taking a step backward.
I am using VS.Net 2003. Any Help would be appreciated.
Allison ... more >>
Pros/Cons of using sqltransaction class vs sql server stored proce
Posted by Mike Moore at 7/7/2005 2:50:03 PM
Can anyone provide suggestions/recommendations of using either the
sqltransaction class for ado.net or a sql server stored procedure. we need
to using begin and end transactions to update mulitple tables?
asp.net app with sql server 2000 database... more >>
Connection pooling
Posted by Arne at 7/7/2005 1:33:13 PM
I have one SQL account that is used by 100 simultaneous users at my website.
Let's say one user starts a long running query. I get another sql request
before the first sql statement finishes. Does that mean I have to open or use
another connection? Does this mean that the web server needs mult... more >>
Dispose table
Posted by wansch at 7/7/2005 8:49:01 AM
Hi,
i read in newsgroups and hints, that everthing wich has a dispose() method
should
be disposed.
Is this true for tables and columns both have a dispose() method.
Thanks for reply
wansch... more >>
Are there escape characters for SQL?
Posted by basulasz at 7/7/2005 8:04:05 AM
I think it is a very simple question, but i don't know the answer. I am
developing a web site in C# and ASP.NET . If an entry like "Here is Sam's
Pub" is entered into a Textbox exception occurs. Since " ' " character causes
problem. Are there any escape character? Or how can i solve this probl... more >>
Update using OleDbDataAdapter and DataSet
Posted by pagates at 7/7/2005 7:49:17 AM
I am having difficulty getting an Update (MS Access) to work correctly using
a OleDbDataAdapter, DataSet, and parameters.
I add the parameters, and must have a default value for the values I want to
SET in the update (I use the current time, so I can see any changes). I then
attempt to cha... more >>
System.Data.NoNullAllowedException
Posted by nbohana at 7/6/2005 8:59:01 PM
I am using sql server, Visual Studio .NET and C#. My application uses windows
forms. The form that I am having a problem with has some text boxes and a
data grid. There are two sql tables (i.e task and task-details) each table
has the same primary key (service-order-number). The problem is I g... more >>
What first? Merge or acceptchanges?
Posted by Roland_Müller at 7/6/2005 5:02:48 PM
Hi,
we have a client-server-application.
On the client we add, delete things to/from a dataset then we save it
via webservice; after that the dataset on the client must be updated.
We do this with
- DataSet.Merge (to get new Ids for example)
- DataSet.AcceptChanges (to remove deleted rows... more >>
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Joining table or using a view
Posted by Mike Moore at 7/6/2005 5:01:01 PM
I have a situation where I need to join numerous tables in order to display
data to the user. The user will be allowed to update the information.
I am creating my data adapter and dataset in Visual Studio. However, Visual
Studio will not create insert, update, or delete commands for this datase... more >>
update problem
Posted by Stephen Martinelli at 7/6/2005 3:57:04 PM
Hello... Im cross posting this ...sorry but I'm stuck...
Im trying to update a access table called xUpdate with another table called
temp. Both table live in the same database. I want to update the field
xUpdate.status with a field in temp called temp.newStatus. I thought the
following woul... more >>
SQL statement with multiple WHERE statements
Posted by thomasp NO[at]SPAM msala.net at 7/6/2005 1:37:48 PM
I have a MS Access table with the fields, ID, ATime, and ADate and I want to
select records between a certain date and time. Will someone show me the
proper syntax for the SQL statement. I need to construct the sql statement
in VB.NET 2005. I can write one that pulls records between a set of da... more >>
Persist Security Info = True in connection string
Posted by Greg Robinson at 7/6/2005 11:39:15 AM
Sql Server connection string, Persist Security Info = True\False
Per the docs I find:
"When set to false or no (strongly recommended), security-sensitive
information, such as the password, is not returned as part of the
connection if the connection is open or has ever been in an open
state.... more >>
General Network Error - LocalHost
Posted by JL at 7/6/2005 11:03:01 AM
We have a Winforms app running on XP against a local installation of MSDE.
The machine is connected to a network. When we pull the network cable out
we get General Network Error from SQL Server even though we are connected to
the SQL Server on the local machine.
We pull the network cable o... more >>
Update Dataset Not working
Posted by GarrettD78 at 7/6/2005 8:50:01 AM
I have a typed dataset that is display in a form with parent data in text
boxes and the child table in a componentone flexgrid. To add a row to the
child table I open a form with text boxes and then return each piece of
information to the main form. In the main for I create a new row in the
... more >>
Difference between a datatable and dataview
Posted by DOTNETGUY at 7/6/2005 6:16:15 AM
What are the main differences between a dataTable and dataView? Does one
perform better than the other?... more >>
Question regarding OOP and database access
Posted by leodippolito NO[at]SPAM gmail.com at 7/6/2005 4:10:33 AM
Hello sirs!
Suppose I have these objects (and their attributes):
Car
- string carName
- Wheel aWheel
Truck
- string truckName
- Wheel aWheel
Wheel
- string wheelColor
- bool hasAHonk
(as I lack imagination for a better example, let's assume that the car
and the ... more >>
Q:Multithreaded ADO.Net Connections Are Non Pooled?
Posted by Marauderz at 7/6/2005 12:00:00 AM
Hi guys, have a little weird scenario here.
I have a windows Service that's serving requets using multiple threads
created by the .Net threadpool. Within each thread they will create their
own Connection object and go off and do their thing, an insert, a Select and
the connection is closed.... more >>
How to filter a Dataset and save it into Xml ?
Posted by Patrice Dargenton at 7/5/2005 11:40:26 AM
Hello, I can save my DataSet into Xml using ds.WriteXml(strXmlPath).
Now I would like to filter it like I can do using DataView.RowFilter into
another Xml file, but I don't know how to do it, because It always contains
the original DataSet, not the filtered one, any solution ?
Thanks.
---------... more >>
Problems with connection pool for DB2400
Posted by jabailo NO[at]SPAM texeme.com at 7/5/2005 10:42:03 AM
Platform:
W2K
IIS 5.0
..NET 1.1
ADO.NET managed DB2 provider for iSeries
I wrote a web service which allows me to post records to the as/400
Occasionally there seem to be errors such as "Communication Problem".
I believe these are related to the connection pool.
We reboot our as/... more >>
rowfilter not working correctly
Posted by Benjamin at 7/5/2005 9:44:01 AM
We are using a rowfilter on our dataview and are not getting the expected
results. Our filter is as follows:
"CLIENT_ID='T1000' AND NOT (RES_RATE=0 AND BP_SIT_SYS=0 AND BP_SIT_DIA=0
AND PULSE_API=0 AND TEMPERATUR=0 AND WEIGHT_NUT=0)"
The results we expect are records that have a Clie... more >>
NTAUTHORITY\NET SERVICE not authorized
Posted by ChuckD_Duncan at 7/5/2005 9:40:40 AM
(Platform: 2003 or XP, IIS) From a Web Service, I have a sqlConnection with
a correct (tested) connection string. When I try to
myConn.Open();
it fails with NTAUTHORITY\NET SERVICE not authorized... meaning it seems
to be looking for that in the SQL users list. However, I can't find s... more >>
ADO.NET in classic ASP?
Posted by jason at 7/5/2005 9:39:39 AM
can ADO.NET be used in classic ASP? that is to say: is it made
available through COM Interop, or would i have to wrap ADO.NET objects
in a COM Interop class library myself?
if ADO.NET objects are available in COM already, what is the namespace
used to instantiate them?
thanks for any help,
... more >>
referential integrity
Posted by simo71 at 7/5/2005 3:26:01 AM
I'm trying to create a form to maintain 2 MS Access RELATED tables
'Parent' and 'Child'. I use 2 datagrids that are binded to 2 datatables.
I've created 2 dataadapters and filled the datasets. I try to modify in the
datagrid a NON key field of the 'Parent' tale and call the update method. An
... more >>
Effective use of typed DataSet
Posted by bhawin13 at 7/5/2005 3:18:36 AM
Hello folks,
You should be here if you know something about typed DataSet or wants
to know something about typed DataSet. If you know something about
typed DataSet then please express your views.
I have started this topic to discuss the use of typed dataset.
I wish you express your view reg... more >>
Dataset refresh single column
Posted by Arapi at 7/5/2005 12:00:00 AM
Hi,
I am upgrading a vb6 app to .net. My app works this way: on the form_load
event I populate a dataset with all existing products (over 25,000) and
their quantities on the database. Having in mind that many people (many
computers) are placing orders at the same time, there is a great ... more >>
null value of parameters when update by DataAdapter
Posted by p:D at 7/5/2005 12:00:00 AM
I have a parent with a DataSet and a child form that have few tables, after
I change the data in the tables and then "Merge" the tables into the parent
DataSet. I found that all values in the DataAdapter were null when update to
sqlserver. But I found the parent dataset have values by using wr... more >>
close SqlDataReader
Posted by Ruslan at 7/5/2005 12:00:00 AM
Hi,
I have the following code:
using (SqlConnection connection = DBConnector.GetConnection())
{
SqlCommand cm = new SqlCommand();
SqlDataReader dr = new SqlDataReader (cm.ExecuteReader());
while (dr.Read())
{
...
}
}
Ther... more >>
Creating a temporary table in a SqlCommand with Parameters fails
Posted by Mark Rendle at 7/5/2005 12:00:00 AM
For some reason, if I create a temporary table in a SqlCommand which has
parameters, it doesn't get created properly, although no exception is
thrown and ExecuteNonQuery returns the correct number of rows.
So
cmd.CommandText = "create table #temp (col int); insert into #temp values
(1)"... more >>
sqlDataAdapters/
Posted by nbohana at 7/4/2005 12:54:06 PM
I am using sql server, and in my database there two tables. One of the tables
is the primary (tasks) and the other is secondary (Detail). The primary keys
in both tables is "services-order-number". The 'Detail table' also has
aother key "taskid". They look fine in the sql database, but when ... more >>
Intellisense
Posted by (rbutch NO[at]SPAM coair.com) at 7/4/2005 11:27:45 AM
hey guys quick question. all of a sudden my intellisense feature in Visual Studio seemed to stop functioning.
could there have possibly been something i inadvertantly Clicked to Stop this?
i mean i can type Dim foo as st....................and usually the list comes up with the choices.
but, n... more >>
executenonquery - insert works only in debug mode
Posted by ADF at 7/4/2005 2:06:18 AM
I have wrote this code:
-----------------------------------------------------------------------------
Dim cnsql As New SqlClient.SqlConnection
cnsql.ConnectionString = "Data Source=ced2; User ID=sa;
Password=;Initial Catalog=NGN;Persist Security Info=True;"
Dim cmdsql1 As New SqlClient.SqlC... more >>
The best online ADO resource
Posted by worzel at 7/4/2005 12:00:00 AM
Aside from MS site, which is the best site for ADO on the web? Actually,
which is considered th ebest (biggest) for dot net in general?
... more >>
Cast from string to type integer
Posted by Bob at 7/3/2005 11:58:00 PM
Hello:
This has been driving me nuts.
Everything I do gives the same error. The bigger issue here is that it
doesn't give me a clue where the error is rising. The debugger is blank.
Thanks
Bob
... more >>
Need OLEDB Connect String Example for Sybase
Posted by Mori at 7/3/2005 6:11:03 PM
I need to use OLEDB Provider to access Sybase. I am having problems with the
ASE provider and prefer OLEDB.
Question: What do I need to implement that? Any clients to install?
A working example would be appreciated.... more >>
Emergency: Unicode Characters in a Dataset.
Posted by Mohammad-Reza at 7/3/2005 8:01:01 AM
We are writing an application for a specific culture(Arabic or Farsi).
This application involves using DataAdapter, OLEDB Connection and the DataSet.
We didn't use the .NET data binding, just field TextBoxes with the data
retrieved from the DataSet but whole system seems to be unable to update t... more >>
DataReader,ArrayList, ListBox
Posted by dennist685 at 7/2/2005 3:57:01 AM
I'm developing in vs 2005 beta2 now. I've been using a table adapter to
populate comboboxes. That's fine, because these are mostly lookup tables
with 10 to 30 rows. But then I came to Authors. I have hundreds of authors.
I started a thread in the vs 2005 forums looking for a more economic... more >>
How Can I retreive all the SQL server on my LAN ?
Posted by { Olivier } at 7/2/2005 12:00:00 AM
Hello from FRANCE
I use VS 2005 beta 2 and Sql server 2005.
How Can I retreive all the SQL server on my LAN ?
Thanks
Olivier
... more >>
How to break line in a string field
Posted by ad at 7/2/2005 12:00:00 AM
I have a field of varchar(20), the content of it may be "Dog,Lion,Phoenix"
When it the field display in a cell of DataGrid, it will display in a line,
I want to break line at each comma, so I change the content of the filed to
"Dog<br>Lion<br>,Phoenix" ,
But it still display in a line.
How can... more >>
newbie questions
Posted by Chuck Bowling at 7/1/2005 11:59:12 PM
Ok, I'm very new to ADO.NET and databases in general.
There are a couple of things I'm not clear on. First, I'm not sure exactly
what an SQL Server is. By that I mean what's the difference between an SQL
server and an Access database? Does the server only serve SQL to the Access
datasource ... more >>
Loading UTF-8 CSV into ADO.NET Recordset
Posted by Drew Lettington at 7/1/2005 6:04:01 PM
I have a program that loads a CSV file in UTF-8 in to an ADO recordset (if I
open the CSV file in Notepad it shows that it's UTF-8 encoded). It works
fine when the file contains Latin characters but works incorrectly when the
CSV file contains Japanese characters. How can I get the Japanese ... more >>
Merging 2 datasets: Want Union of both
Posted by akeserla NO[at]SPAM gmail.com at 7/1/2005 3:24:08 PM
I wanted to know the easy/right way to accomplish the task of creating
a union of 2 datasets.
I have 2 dataset of the same type and I want to merge them to create an
union of both. I want to create a dataset that contains the union of
both. I have tried searching for this but with no much suc... more >>
sql query against an in memory dataset with VFP COM components
Posted by gabe at 7/1/2005 2:27:01 PM
I know this issue has been beaten heavily here a few times, but i was looking
for advice on a solution that i saw posted as it goes into some areas that
i'm frankly not familliar with (yet), mostly the whole VFP COM components
part.
over on http://www.kamalpatel.net/Default.htm (where i go ... more >>
SQL Server rollback issue
Posted by Davewadd at 7/1/2005 1:10:03 PM
I'm experiencing an odd behavior in SQL Server 2000. I'm pretty sure this
qualifies as a bug. I have a transactioon that contains several different
record types, all of them using an identity element as their primary key. If
there's a problem with a transaction, a rollback is issued to remove ... more >>
OleDBConnection to Access database "flushing" problem
Posted by William Sonner at 7/1/2005 12:21:03 PM
Hi,
I'm writing in C# and using the OleDbConnection class to connect to a
Microsoft Access database. The provider used in the connection string is
"Provider=Microsoft.Jet.OLEDB.4.0".
I have two objects (A and B). The first object (Object A) uses an
OleDbConnection object to make a connect... more >>
How to get data when SqlException.Class < 16
Posted by Rudi at 7/1/2005 11:11:00 AM
Hi,
I have a master proc that calls a different 'child' proc for a set of
records.
When a Raiserror occurs in the child proc, I 'handle' it in the master proc
and update a status field in the record to 'Error' and set the returned
error message.
When all records have been processed, I ret... more >>
Sproadic ADO.NET Error
Posted by sameer at 7/1/2005 8:32:01 AM
Hi All,
i have an asp.net application which has got sql server 2000 behind the
scenes.
Very simple application, all it does is extract the data from the databse
and display it in the grid. But randomly when i access my website in
productin ,i get this error mentioned below but when it ... more >>
OleDbDataReader.ExecuteReader exception
Posted by Keith at 7/1/2005 7:03:01 AM
Has anyone run across the following exception and have any idea what the
issue is?
System.Data.OleDb.OleDbException: [NCR][Teradata RDBMS] A character string
failed conversion to a numeric value.
at System.Data.OleDb.OleDbCommand.ProcessResults(Int32 hr)
at System.Data.OleDb.OleDbC... more >>
View contents of a selectcommand including the values of the param
Posted by Geert at 7/1/2005 6:21:05 AM
Hi,
I'm currently creating an application with a lot of select statements in it.
For security reasons I always use parameters.
The problem with parameters is that when you want to review your select
statement with selectCommand.CommandText, you see the name of the parameters
in case of t... more >>
SQL syntax error in INSERT INTO statement
Posted by Nathan Sokalski at 7/1/2005 12:08:01 AM
When trying to submit data to an Access database using ASP.NET I recieve the
following error:
[OleDbException (0x80040e14): Syntax error in INSERT INTO statement.]
System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(Int32 hr)
+41
System.Data.OleDb.OleDbCommand.ExecuteComman... more >>
Return Child Records
Posted by Bob at 7/1/2005 12:00:00 AM
Hello:
I'm working on an app that has many child tables. Like 26 child tables in a
MS Access Database.
I created the form, adapters, DS and relations in designer.
I also added the parameters in designer to find records when a user types
into a textbox.
My problem is I can't figure ou... more >>
OleDbConnections to Oracle 7 not closing
Posted by ste7e at 7/1/2005 12:00:00 AM
Hi can anyone help me?! :confused:
I've got a web service that uses OleDb to connect to an Oracle 7 d
running on AIX. All works well but after running for a while my AI
server runs out of connections :( When I look there are LOADS o
connections from the web server.
I've checked the c... more >>
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