Using LINQ to Objects in VB

This tutorial was created with Microsoft Visual Studio .NET 2008. However, if you are using 2005, you can implement LINQ by downloading Microsoft's LINQ Community Technology Preview release from here.

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In this tutorial, we will be looking at using LINQ to Objects. We will be creating a Windows Forms Application that will first define an array of numbers, and then we will use LINQ to Objects to interact with this collection of numbers. We will create buttons to display the results of calculations of the numbers, demonstrating the built-in functions of LINQ, that we can perform on most any collection.

We will start by designing our form with Four buttons and a label. The first button will be to display all the numbers in our array, which we will hard-code for this example. The label will be to show the results of our functions, and then the other three buttons we will use for LINQ functions.

We will also implement a StatusStrip control to make use of the label within, so that we can manipulate it on the mouse hover and leave events. The form may look something like this:

Once we are done with our form, we can double-click on the buttons in design view to create the click event handlers. We can also create the hover and leave handlers by clicking on the Events button in the Properties window, and then double-clicking on both of the MouseHover and MouseLeave events. Let's start with the StatusStrip label. We will change the text on the hover and leave events of each of the buttons to let the user know what each of the buttons does:

Next, we will create a method that will create an array of numbers that we can call from all of the buttons:

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To display all numbers in the array, we use a LINQ query and FOR loop:

Next, we use a similar structure to select only the numbers from the array that are below or equal to 10. Again, we use LINQ:

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We can also use LINQ built-in functions on the collection, such as the sum of all the numbers and also the average:

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There's no doubt that LINQ is one of the headline features of Visual Studio Orcas. I've been trying out some LINQ queries; it's a very interesting new area with massive potential. It seems though that most books and articles available at the moment are C# based, so I thought I'd blog my journey through the Land of LINQ in case any other VB DotNetters might find it useful now or in the future.

Through this blog the author gives information on how to use LINQ to Objects in VB. First of all he creates a Windows Forms Application which will define an array of numbers. We will be able to interact with these numbers by using LINQ to Objects. He explains wonderfully well how to do it and after that he moves on to programming part. It is also presented with attention to detail. I certainly have the feeling that this blogger has got the god given gift of explaining the most complex things in the simplest way. This is a wonderful blog which goes a long way in alleviating the fears of programmers in VB.

I've been trying out some LINQ queries; it's a very interesting new area with massive potential. It seems though that most books and articles available at the moment are C# based, so I thought I'd blog my journey through the Land of LINQ in case any other VB DotNetters might find it useful now or in the future.

So this is LINQ. Looks really useful. I bet you can save lots of programming time.

We will be creating a Windows Forms Application that will first define an array of numbers, and then we will use LINQ to Objects to interact with this collection of numbers.Thanks

It seems we can LINQ to everything these days. Here's some resources that will get you started using LINQ with XML. Introduction .NET Language-Integrated Query for XML Data- This MSDN introduction is 44 pages in fairly easy to read detail on LINQ to XML

From MSDN: "The LINQ Project is a codename for a set of extensions to the .NET Framework that encompass language-integrated query, set, and transform operations. It extends C# and Visual Basic with native language syntax for queries and provides class

Start with listening to Anders talk about LINQ in Anders Hejlsberg on LINQ and Functional Programming this video and reading the MSDN Introduction to LINQ. If that's too long, perhaps the 5 Minute Intro is more your speed. There's also a good Channel

I've been trying out some LINQ queries; it's a very interesting new area with massive potential. It seems though that most books and articles available at the moment are C# based, so I thought I'd blog my journey through the Land of LINQ in case any other VB DotNetters might find it useful now or in the future.Thanks

There's no doubt that LINQ is one of the headline features of Visual Studio Orcas. I've been trying out some LINQ queries; it's a very interesting new area with massive potential. It seems though that most books and articles available at the moment are C# based, so I thought I'd blog my journey through the Land of LINQ in case any other VB DotNetters might find it useful now or in the future.

Thanks

he LINQ Project is a codename for a set of extensions to the .NET Framework that encompass language-integrated query, set, and transform operations.

Start with listening to Anders talk about LINQ in Anders Hejlsberg on LINQ and Functional Programming this video and reading the MSDN Introduction to LINQ. If that's too long, perhaps the 5 Minute Intro is more your speed.

Start with listening to Anders talk about LINQ in Anders Hejlsberg on LINQ and Functional Programming this video and reading the MSDN Introduction to LINQ. If that's too long, perhaps the 5 Minute Intro is more your speed.

Start with listening to Anders talk about LINQ in Anders Hejlsberg on LINQ and Functional Programming this video and reading the MSDN Introduction to LINQ. If that's too long, perhaps the 5 Minute Intro is more your speed. There's also a good Channel

it seems we can LINQ to everything these days. Here's some resources that will get you started using LINQ with XML. Introduction .NET Language-Integrated Query for XML Data- This MSDN introduction is 44 pages in fairly easy to read detail on LINQ to XML

Thanks for explaining the AJAX in details, i get lots of information about fundamentals of AJAX.

We will start by designing our form with Four buttons and a label. The first button will be to display all the numbers in our array, which we will hard-code for this example. The label will be to show the results of our functions, and then the other three buttons we will use for LINQ functions.

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Once we are done with our form, we can double-click on the buttons in design view to create the click event handlers. We can also create the hover and leave handlers by clicking on the Events button in the Properties window, and then double-clicking on both of the MouseHover and MouseLeave events. Let's start with the StatusStrip label. We will change the text on the hover and leave events of each of the buttons to let the user know what each of the buttons does:

We will start by designing our form with Four buttons and a label. The first button will be to display all the numbers in our array, which we will hard-code for this example.

thank you for sharing

else

{

textBox3.Enabled = true;

button4.Text = "Disable >>";

Posted 08/26/2010 at 8:13 AM

cocokathy

cocokathy90

cocokathy90

cocokathy90

handlers by clicking on the Events button in the Properties window, and then double-clicking on both of the MouseHover and MouseLeave events.

Let's start with the statusstrip label.Thanks

cocokathy90

cocokathy90

cocokathy

handlers by clicking on the Events button in the Properties window, and then double-clicking on both of the MouseHover and MouseLeave events.

the MouseHover and MouseLeave events.

the MouseHover and MouseLeave events.

Let's start with the statusstrip label.Thanks

with the statusstrip label.Thanks

textBox3.Enabled = true;

button4.Text = "Disable >>";

Posted 08/26/2010 at 8:13 AM

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