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by: Somebody_Out_There |
last post by:
Hello,
I am trying to create a strongly typed datatable/dataset from an untyped
dataset or datatable returned from a stored proc.
The structure of the table cannot be static since the results are
dynamic which means that I am right now creating the schema/structure of
the datatable from a datareader using reader.GetSchemaTable() and then
looping thru the reader to populate values.
Is there any other efficient way of achieving this?...
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by: Jensen bredal |
last post by:
hello,
I need to do the described operation,
I thought this should be possible with a DataTable.Select but, it returns an
array of rows,
and this is not good for performance as i have to repackage all this to a
datatable.
Is there a better way of doing this?
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by: cpnet |
last post by:
I have a DataTable defined in a strongly-typed DataSet:
public class MyDataSet: DataSet...
{
...
public class MyDataTable: DataTable...
{ ...}
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by: GG |
last post by:
I am trying to add a nullable datetime column to a datatable fails. I am
getting exception
DataSet does not support System.Nullable<>.
None of these works
dtSearchFromData.Columns.Add( new DataColumn( "StartDate",
typeof( DateTime? ) ) );
dtSearchFromData.Columns.Add( new DataColumn( "EndDate",
typeof( System.Nullable<DateTime>) ) );
Any ideas?
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by: sklett |
last post by:
I'm changing from a DataGrid to a DataGridView and have run across a
problem. The items that are bound to the DataGrid have an int Property that
represents a primary key of a lookup table in my database. For example:
table JobTypes
1 | Manager
2 | Controller
3 | Supervisor
table Employee
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by: PJ6 |
last post by:
I want to bind a grid to a strongly-typed dataset that needs to display a
single non-updatable column; basically I have a join on a join. I need to
have the rest of the information updatable, but ADO.Net refuses to generate
update support. It's smart enough to tolerate calculated columns when
they're included, so what's the matter with this case - can't it just ignore
that column as well? Is that a limitation of the code generator? Any...
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by: timnels |
last post by:
I have a strongly-typed DataTable I need to save as XML and later
reload it.
I thought that all I had to do was:
menuDataTable.WriteXml(filename,XmlWriteMode.WriteSchema);
And from another application do:
menuDataTable.ReadXml(filename);
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by: Simon |
last post by:
Hi all,
Is it somehow possible to do do batched updates with table adapters in
the same way you can with data adapters?
I expected the methods to be much the same but apparently not. If it
isn't possible can anyone tell me how to do batched updates on a
strongly typed datatable?
Thanks
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by: Code Monkey |
last post by:
Silly question maybe, but I've been doing the following for far too
long now:
public static DataTable myDataTable()
{
string sql = @"SELECT column1, column2, column3, column4
FROM myTable";
using (SqlConnection conn = new SqlConnection(websqlconn))
{
SqlCommand cmd = new SqlCommand(sql, conn);
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by: Infog |
last post by:
Is it possible to edit a strongly typed dataset so that each table and column has additional properties?
If I could record the ValueMember and DisplayMember for each table I'm using, I could write a general solution for my display layer that is much shorter than coding the "data --> display" part of the windows form every time I need to display a DataGridView, ComboBox, etc.
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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: 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: 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,...
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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: 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: 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: 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...
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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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