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by: JJ |
last post by:
Hi,
I created a DataAdapter, connection object and dataset generated from
DataAdapter by dragging DataAdapter compenent to win form. Now in the code
behind I want to use that DataAdapter. I go to use the dataset that was
generated from DataAdapter and I get an Object ref error. So do I have to go
through the steps in code behind to reinitate the SqlDataAdapter and DataSet
that I generated on the form? If so whats the purpose of having...
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by: Geoff Pennington |
last post by:
I have a class method that returns a DataAdapter. I want to access the
table(s) contained in the DataAdapter. Of course, accessing the DataSets
would be good enough, because I could get the tables from there. I can't
find a way to do this. Am I missing something?
Much obliged.
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by: Doug Bell |
last post by:
Hi,
I thought I had this sorted this morning but it is still a problem.
My application has a DataAccess Class.
When it starts, it:
Connects to a DB (OLE DB)
If it connects it uses an OleDbCommand with an SQL String and the connection
it has a DataAdapter with the command
then it fills the DataSet's DataTable with the streamed data.
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by: mivey4 |
last post by:
Okay,
The problem is that I have an Access Database that has the following
fields:
EmpID - Autonumber (PrimaryKey)
AccountID - Text
IssueReported - Memo
DateOpened - Date/Time
TimeOpened - Date/Time
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by: pwh777 |
last post by:
I need help in understanding the DataAdapter Fill method and how it
relates to the binding to controls on a form. I have a table called
tbl_CID_XRef on SQL Server. I have written as a test the simple code
below:
----------------------------------------------------------------
Private cob As SqlCommandBuilder
Private con As SqlConnection
Private cur As CurrencyManager
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by: Zorpiedoman |
last post by:
I keep getting a concurrency exception the second time I make a change and
attempt to update a dataadapter. It appears this is by design, so there must
be something I can do to avoid it.
Example:
I have a dataadapter that contains one table with one row. I change the
value of the 'FisrtName' column in that row from Jack to John. I call
..update on the dataadapter it goes through fine. Now I change that same
column in that same row...
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by: Rich |
last post by:
Dim da As New SqlDataAdapter("Select * from tbl1", conn)
dim tblx As New DataTable
da.Fill(tblx) '--works OK up to this point
da.UpdateCommand = New SqlCommand
da.UpdateCommand.Connection = conn
da.UpdateCommand.CommandText = "Update tbl1 set fld1 = 'test' where ID = 1"
da.Update(tblx) '--tblx/tbl1 not getting updated here.
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by: George |
last post by:
I have set DataAdapter.AcceptChangesDuringUpdate = true;
However, I find that I still need to call AcceptChanges on the associated
DataTable,
DataTable.AcceptChanges();
Has anyone encountered that? Am I not setting this field properly?
The following are some of the snippets of the codes which may help explain
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by: Rich |
last post by:
What is the diffeence bewtween a dataAdapter.InsertCommand and
dataAdapter.SelectCommand (and dataAdapter.UpdateCommand for that matter)?
Dim da As SqlDataAdapter
conn.Open
da.SelectCommand = New SqlCommand
da.SelectCommand.Connectoin = conn
da.SelectCommand.CommandType = Command.Text
da.SelectCommand.CommandText = "insert Into tbl1 Select * from tbl2"
da.SelectCommand.ExecuteNonQuery
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by: mike1402 |
last post by:
Hi !
I get the error below sometimes when retrieving a big amount of data using Datadapter.Fill(dataset,"table"). But when I send the command Fill again, there is no error. Is it a fault of IBM.Data.DB2.iSeries; Version: v1.0.3705 (is there an newer one for OS/400 Version ist V5R3 ?) or is it a hardware faoult (memory of as400 or pc) ?
br mike
Es wurde versucht, im geschützten Speicher zu lesen oder zu schreiben. Dies ist häufig ein...
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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, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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 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,...
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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, 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...
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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...
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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, 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...
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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...
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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();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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
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