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by: Andrew Mueller |
last post by:
Hello,
Since I cannot query a DataSet directly, and I would like to maintain
it's data, how would I use an adapter (SqlDataAdapter or DataAdapter) to
query this DataSet.
Example: Could I?
SqlDataAdapter adapter = new SqlDataAdapter();
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by: goodstart123 |
last post by:
For example, the following code works fine without SqlConnection.
Any Answer to the question?
string connectionString =
"server=YourServer; uid=sa;
pwd=YourPassword; database=ProgASPDotNetBugs";
// get records from the Bugs table
string commandString =
"Select BugID, Description from Bugs";
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by: Jim in Arizona |
last post by:
Continuing my lessons out of a book, I ran into a problem when trying for
the first time to update a datastore (access database in this case).
My Code:
Private Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load
Dim strConnection, strSQL As String
Dim objDataSet As New DataSet()
Dim objConnection As OleDbConnection
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by: Terry Olsen |
last post by:
I have an in-memory DataTable with about 35,000 rows. I have an IP
address column that is populated and a hostname column that is not. I
want to be able to quickly update the hostname column so that it shows
the hostname for the IP. Rather than iterate through all the rows, I'm
wondering if there's a way to update it quickly with an SQL update
command? Something like...
UPDATE MyDT SET hostname='localhost' WHERE IP='127.0.0.1'
Can...
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by: Jim in Arizona |
last post by:
I've been using an example out of a book to be able to edit the rows in a
database. I am getting the following error:
========================================================
========================================================
Server Error in '/' Application.
--------------------------------------------------------------------------------
Operation must use an updateable query.
Description: An unhandled exception occurred during...
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by: samoore33 |
last post by:
I use the code below to search through a DataSet:
Dim t As DataTable
t = result.Tables("State")
Dim strExpr As String
strExpr = "id = '" & theState.ToString() & "'"
Dim foundRows() As DataRow
foundRows = t.Select(strExpr)
This of course returns foundRows. My problem is that I need to return
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by: Pete Wittig |
last post by:
Hi,
I have a DataTable and I want to get a subset of the rows within it. I use
the Select method to get my subset and the results are in a DataRow. I
want to put those Rows back into a DataTable. I've tried a few variations of
the following but no rows are every imported into the datatable:
DataRow datrow = ds.Tables.Select("PersonID = " + id);
DataTable dt = new DataTable();
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by: =?Utf-8?B?Q2hyaXM=?= |
last post by:
How can I run this query against a table in my Access database? I don't know
hwo to use it in C#. In VB I would use .Recordset = "some sql statement". How
do I do this in C#?
//I get a vlaue form a cell and apply it to the SQL statement
commandCol = scriptDataGridView.FormattedValue.ToString();
string sCommand = "SELECT CommandString FROM Commands WHERE CommandName = "
+ commandCol;
//This reutne a valie SQL statement which will return...
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by: Oenone |
last post by:
I have a project that creates a SqlDataAdapter and uses its Fill method to
fill a DataTable with data from a user-provided query. From there I can
obviously access details about the rows and columns returned by the query.
However, I need to be able to determine the size of the varchar fields that
are returned by the query.
The obvious answer appeared to be to check the DataColumn.MaxLength
property. However, after using the Fill method,...
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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: 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...
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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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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...
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