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by: Marc Gravell |
last post by:
In Linq, you can apparently get a meaningful body from and
expression's .ToString(); random question - does anybody know if linq
also includes a parser? It just seemed it might be a handy way to
write a safe but easy implementation (i.e. no codedom) for an
IBindingListView.Filter (by compiling to a Predicate<T>).
Anybody know if this is possible at all?
Marc
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by: paululvinius |
last post by:
Hi!
Testing som Linq-expressions and tried to measure performance and
compare it to pre-Linq programming.
The folloing two methods are functional equal but the non-Linq one is
twice as fast.
public List<ConferenceRoomOldWay(int minimumSeatingCapacity)
{
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by: Dmitry Perets |
last post by:
Hello,
I am trying to work with MS SQL Server 7 from the release version of
Visual Studio 2008 + LINQ to SQL. And the problem is that the LINQ to
SQL designer doesn't accept my tables saying that my connection
provider is unsupported. Then I found out that LINQ to SQL officially
supports only .NET Provider for SQL Server. The problem is that SQL
Server 7 can't work with this provider, so I have to use the .NET
Provider for OLE DB. Well,...
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by: Leo Seccia |
last post by:
Hello everyone,
I have a c# project with a sql server database.
I have a number of lookup tables in my database which I successfully managed
to import into my LINQ dataclasses.
eg.
Table: tlkpColor
(PK) tlkpColorID
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by: Lloyd Sheen |
last post by:
I have an existing set of tables which I have put into a Linq to SQL class.
Those tables I have had no problems with.
I have created some new tables and when I add them to the a new Linq to SQL
I found that I could query, but when I use the InsertAllOnSubmit command to
insert into the database the IDE (or the program) fails.
So I look at the existing good application and see that the items defined
there have a:
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by: Lloyd Sheen |
last post by:
In testing I am adding / removing items using linq.
Steps:
1. Add new item using InsertOnSubmit and SubmitChanges with no problem.
2. Remove the item using DeleteOnSubmit and SubmitChanges with no
problem.
3. Attempt to add the just removed item. This results in the following
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by: =?Utf-8?B?UmF5bmFsZA==?= |
last post by:
Hi everybody,
I have a problem on linq related field, look my simple example :
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
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by: =?Utf-8?B?RXJpYyBGYWxza2Vu?= |
last post by:
We’re storing our main entity in an insert only table which stores the
history of past revisions, but we’re facing problems with storing this
history as LINQ will only update the entity, and not reinsert it with a
different revision number.
Compounding the issue, we’ve also got an associated table storing properties
for our entities which is not revisioned, but we still want changes to the
children of our entity (additions, changes...
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by: shapper |
last post by:
Hello,
Is it possible to multiply all Prices in a List<Productby 1.1 using
Linq?
Product has a property named Price.
Thanks,
Miguel
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by: =?Utf-8?B?SmFtZXMgUGFnZQ==?= |
last post by:
Hi all
Having a mental block with linq!
I have a simple aspx page with a button and a label. When the button is
clicked I want the label to display the result of a simple query:
i.e. Select name from MyTable where id = 1
This should return ‘peter’ - simplicity using sql
I'm trying to do this with linq and getting nowhere (converting to string
error)
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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: 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...
|
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...
|
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,...
|
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: 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: 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: 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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