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Simple way to cache objects and collections for greater performance and scalability

Caching of frequently used data greatly increases the scalability of your application since you can avoid repeated queries on database, file system or to webservices. When objects are cached, it can be retrieved from the cache which is lot faster and more scalable than loading from database, file or...

Posted to Omar AL Zabir blog on ASP.NET Ajax and .NET 3.5 by omar on Sun, Nov 1 2009
Filed under: Filed under: performance, linq, .net
Populating a DataGridView from Xml Data

If you are using XML in a WinForms application you may find the need to display the XML data in a DataGridView. Let's take this XML: <states> <state name="California"> <abbreviation>CA</abbreviation> ...

Posted to Deborah's Developer MindScape by Deborah Kurata on Tue, Oct 20 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Xml, LINQ, Binding, WinForms
Nederlandse CodeCamp 2009

Op 21 november 2009 organiseren de SDN , Stichting dotNed en VBcentral samen het derde Nederlandse Code Camp . Dit is een dag lang met code, code sharing, freaking en gezellig samenzijn. Een evenement door ontwikkelaars, voor ontwikkelaars. De regie ligt voor een belangrijk deel bij de deelnemers! Het...

Posted to The Problem Solver by Maurice on Mon, Oct 19 2009
Filed under: Filed under: .NET, Visual FoxPro, LINQ, NetFx3, Workflow, VSTO, WCF, VB, webcast, ClickOnce, WPF, Silverlight, SDN, Data Access, ASP.NET
LINQ To SQL Tips & Tricks: String Operations

LINQ brought developers a very user friendly and domain independent style of writing queries. The fact that the way queries are written is domain independent doesn’t mean that any query will compile the same way or even run the same way. You’ll always need to know how the provider will behave. LINQ To...

Posted to Paulo Morgado by Paulo Morgado on Mon, Oct 12 2009
Filed under: Filed under: .NET, SoftDev, C#, LINQ, TipsAndTricks, LINQ2SQL
Lambda Expressions: Finding an Item in a Generic List

In this prior post , I detailed how to build lists of things using a generic List<T>. Once you have a list, you may need to find items in the list. There are several ways to accomplish this, but using lambda expressions is the most concise. [To begin with an overview of lambda expressions, start...

Posted to Deborah's Developer MindScape by Deborah Kurata on Sun, Oct 11 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Lambda, LINQ, Generics
Série LINQ to SQL Parte 6 - Atualizando registros com LINQ to SQL

Nesse post, para finalizar a série de LINQ to SQL, vou demonstrar como atualizar registros de uma tabela utilizando a query do LINQ. O Códgo abaixo atualiza os dados de um Produto que é recuperado através do seu ID. Veja como é simples a atualização do...

Posted to Andrey Sanches by andrey on Tue, Oct 6 2009
Filed under: Filed under: linq, MSDN
Série LINQ to SQL Parte 5 - Criando querys com JOIN entre tabelas

Como vocês já devem ter percebido, a linguagem LINQ é muito semelhante a uma query SQL e essa tem sido uma das grandes vantagens do LINQ. Nesse post vamos explorar mais um desses recursos, a utilização de JOIN entre duas tabelas em uma consulta e faremos o bind do resultado...

Posted to Andrey Sanches by andrey on Thu, Sep 24 2009
Filed under: Filed under: linq, MSDN
Série LINQ to SQL Parte 4 - Recuperando um registro específico com LINQ

Em continuação à série LINQ to SQL, nesse post veremos como fazer query dos dados em banco e o bind diretamente em controles ASP.NET. Nesse exemplo iremos: Codificar o método que retornará um objeto produto; Codificar o preenchimento do objeto na UI Query em...

Posted to Andrey Sanches by andrey on Mon, Sep 21 2009
Filed under: Filed under: linq, MSDN
An object lesson in blogging and accuracy; was: Efficient "vote counting" with LINQ to Objects - and the value of nothing

Well, this is embarrassing. Yesterday evening, I excitedly wrote a blog post about an interesting little idea for making a particular type of LINQ query (basically vote counting) efficient. It was an idea that had occurred to me a few months back, but I hadn't got round to blogging about it. The...

Posted to Jon Skeet: Coding Blog by skeet on Sun, Sep 20 2009
Filed under: Filed under: C#, Wacky Ideas, LINQ
Série LINQ to SQL Parte 3 - Inserindo registros no Banco de Dados SQL Server

Continuando a série LINQ to SQL , nesse post iremos incluir um registro de Produto na Base de Dados SQL Server utilizando LINQ. Crie uma nova página por nome /LINQ/Cadastro.aspx e desenho seu layout conforme mostra figura abaixo: Após a criação da Página, crie...

Posted to Andrey Sanches by andrey on Thu, Sep 17 2009
Filed under: Filed under: linq, MSDN
Série LINQ to SQL Parte 2 - Modelando objetos com LINQ

Mão na massa Continuando a série sobre LINQ to SQL , nesse post vou publicar como modelar os objetos no VS 2008 e preparar as classes para persistência dos objetos em Banco de Dados. Crie um banco de dados no SQLEXPRESS por nome BlodDemo e duas tabelas Produtos e CategoriaProdutos...

Posted to Andrey Sanches by andrey on Wed, Sep 16 2009
Filed under: Filed under: linq, MSDN
Run you later - Understanding deferred execution in LINQ

Introduction In this article I’m going to try to explain one of the most misunderstood features of LINQ – deferred execution - and the impact it might have on your code if you don’t fully understand what it means. What does deferred execution mean? According to the dictionary the word...

Posted to Joacim's view on stuff by Joacim Andersson on Wed, Sep 9 2009
Filed under: Filed under: vb, visual basic, delayed, execution, deferred execution, postponed, deferred, linq
Enumerable.Repeat

The Enumerable class is new in .NET 3.5 and is part of the System.Linq namespace. It provides a set of static methods that allow you to query any object that implements IEnumerable, basically meaning any object that supports a for/each. This post focuses on the Repeat method of the Enumerable class and...

Posted to Deborah's Developer MindScape by Deborah Kurata on Fri, Sep 4 2009
Filed under: Filed under: VB, C#, CSharp, Lambda, LINQ
Adding Nodes to an XML String

I have an XML string as follows: <States> <State name="Wisconsin"> <Regions> <Region name="Milwaukee"> <Area name="Mukwanago"/> ...

Posted to Deborah's Developer MindScape by Deborah Kurata on Thu, Aug 20 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Lambda, Xml, LINQ
Processing Files Using Anonymous Types

Another use of anonymous types is for processing directories or files. For example, your application needs to collect a set of files and then process them based on a subset of the file properties. [To begin with an overview of anonymous types, start here .] Here is an example. In C#: // Query the set...

Posted to Deborah's Developer MindScape by Deborah Kurata on Wed, Aug 19 2009
Filed under: Filed under: VB, C#, .NET, CSharp, LINQ
Anonymous Types: An Introduction

The last several posts have provided examples of using anonymous types. This post backs up a little and provides an introduction if you are not already familiar with anonymous types. If you are familiar with anonymous types and are looking for more examples, check out these links: Defining Lists...

Posted to Deborah's Developer MindScape by Deborah Kurata on Wed, Aug 19 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Lambda, LINQ
Combined DevelopMentor instructors blog feed.

Michael Kennedy , one of the co instructors from DevelopMentor , has created a combined feed from all the blogs of the various DevelopMentor. An awesome group of people with a lot of knowledge to share. Highly recommended in you RSS reader. http://feeds.feedburner.com/DevelopmentorInstructors ...

Posted to The Problem Solver by Maurice on Wed, Aug 19 2009
Filed under: Filed under: .NET, LINQ, Workflow, WCF, DevCenter, Silverlight, Data Access, ASP.NET, VS2010
Defining Lists of Anonymous Types

Similar to my prior post here that details how to use anonymous types to display word counts, this post details how to track information on the physical lines that contain each word. Again, this specific task is more like a homework assignment than a business issue, but it does demonstrate how to work...

Posted to Deborah's Developer MindScape by Deborah Kurata on Tue, Aug 18 2009
Filed under: Filed under: VB, C#, .NET, CSharp, LINQ, Extension Method
Counting Words in a String Using Anonymous Types

This may be more of a homework assignment for a programming class than something you would do in your applications, but it is a good example of using anonymous types, which are new in .Net 3.5 in both VB and C#. [To begin with an overview of anonymous types, start here .] NOTE: Be sure to set a reference...

Posted to Deborah's Developer MindScape by Deborah Kurata on Mon, Aug 17 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Lambda, LINQ
Using Linq with Microsoft Word and Excel

Some of the collections in the Microsoft Office object models implement IEnumerable. The IEnumerable interface provides the ability to perform a for/each against the collection. With .NET 3.5, a Cast extension method of IEnumerable allows you to work with these collections using Linq. Microsoft Word...

Posted to Deborah's Developer MindScape by Deborah Kurata on Fri, Aug 14 2009
Filed under: Filed under: VB, C#, .NET, CSharp, Lambda, LINQ, Binding, Excel

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