I was involved in designing and implementing an ASP.Net application some time ago. After we deployed the application we wanted to monitor various aspects of the application. We can use the Performance Monitor. In my windows Server 2008 machine, I go to...(read more)

In this post I am going to show you something that we see in most websites. When we visit a website we are given the choice through a control to select the theme(colors,font size,font family) that we want to be applied to the site. In almost all asp.net...(read more)

In my last ASP.Net seminar someone noticed that we did not talk at all about the XmlDataSource,ListView,DataPager web server controls. It is rather impossible to investigate/talk about all issues regarding ASP.Net in a seminar but I promised to write...(read more)

Η ABS (Analysis Business Solutions) ζητά έναν έμπειρο προγραμματιστή με πολύ καλές γνώσεις VB.NET, C#, SQL Server και ASP.NET.Απαραίτητη θεωρείται η γνώση HTML, XHTML , CSS, JavaScript και επιθυμητά οι γνώσεις σε JQuery και Photoshop. Το έργο που θα αναλάβει είναι η συντήριση, επανασχεδιασμός και ανάπτυξη νέων site/portal ή άλλων web ...

In this post I will demonstrate how to extend the functionality of the web server controls by adding client side functionality with Javascript. Let's move on to our example. 1) Launch Visual Studio 2010/2008/2005. (express editions will work fine). Create...(read more)

In this post I will demonstrate with a hands on example how HTML elements in an .aspx page can be processed exactly like standard ASP.Net server controls. Basically how to make them accessible from server side code. 1) Launch Visual Studio 2010/2008/2005...(read more)

In this post I will continue exploring ways on how to profile database activity when using the Entity Framework as the data access layer in our applications. If you want to read the first post of the series click here . If you want to read the second...(read more)

H Information Systems Impact AE εταιρία με πολύχρονη παρουσία στο χώρο ανάπτυξης ολοκληρωμένων επιχειρηματικών λύσεων, πιστοποιημένη ως Microsoft Gold Certified Company, επιθυμεί να εντάξει στο δυναμικό της Web Software Developer.Ο κατάλληλος υποψήφιος θα αναφέρεται στον τεχνικό διευθυντή, θα αποτελεί μέλος της ομάδας web development και θα ...

In this post I will continue exploring ways on how to profile database activity when using the Entity Framework as the data access layer in our applications. I will use a simple asp.net web site and EF to demonstrate this. If you want to read the first...(read more)

Καλησπέρα,Αντιμετωπίζω τελευταία ένα θέμα με το EntityDataSource.Το ERROR είναι το εξής:''WhereParameters cannot be specified unless AutoGenerateWhere==true or Where is specified.''Και σας παραθέτω το πως έχω γράψει ακριβώς το control σε XHTML.<asp:EntityDataSource ID=''MtrlEntityDataSource'' runat=''server'' ...

Normal 0 false false false EL X-NONE X-NONE ...

I have been teaching ASP.Net and EF in one of my classes and I have been asked on the various ways we can profile database activity. Everyone that I know that uses EF as its data access layer has the same question. ''How can I see the T-SQL code that the...(read more)

In this post I will be writing LINQ queries against an array of strings, an array of integers.Moreover I will be using LINQ to query an SQL Server database. I can use LINQ against arrays since the array of strings/integers implement the IENumerable interface...(read more)

With the introduction of LINQ and its many flavours, developers started using this ORM technology to perform queries against an xml document, an sql server database, a in-memory collection of objects. They were fascinated by its general purpose and its...(read more)

In this post I will be continuing my series of posts regarding data access methodologies/technologies that as I call them are pro ORM . I will be demonstrating how to use the connected and the disconnected data access models to retrieve,insert,update...(read more)

H Symmetria Web Solutions Ltd αναζητεί έναν ASP.Net Web Developer για τη στελέχωση των νέων γραφείων της στην Αθήνα.Απαραίτητα προσόνταΆψογη γνώση HTML και CSS. Δυνατότητα ανάπτυξης table-less layouts. Ικανότητα slicing PSD μακετών με Photoshop.Τουλάχιστον 2 χρόνια εμπειρία στην ανάπτυξη multi-tier web εφαρμογών με ASP.NET (C# ή VB.NET)Εμπειρία σε ...

In this post we will continue exploring the meaning of Polymorphism and the various ways we can implement Polymorphism in ASP.Net applications. In this post I demonstrated how to use Polymorphism through Inheritance and base instance classes. In this...(read more)

In this post we will continue exploring the meaning of Polymorphism and the various ways we can implement Polymorphism in ASP.Net applications. In my previous post I demonstrated how to use Polymorphism through Inheritance and base instance classes. In...(read more)

Καλησπέρα σε όλους,έχω έναν πίνακα τον οποίο τον φτιάχνω απο το codebehind και θέλω όταν ο χρήστης πατήσει ενα button να πάρω όλα τα data.Ο πίνακας έχει δυο γραμμές και τρείς στήλες.Οι δύο στήλες έχουν TextBox και η μία έχει DropDownList(εδώ είναι το πρόβλημα)Το πρόβλημα είναι οτι μου φέρνει σωστά τα data απο τα textBoxes αλλα για το DropDownList ...

In one of my ASP.Net seminars I have been asked to give an example of the possible ways we can achieve Polymorphism in our ASP.Net applications. So I have decided to write a simple ASP.Net application that demonstrates the use of Polymorphism . I assume...(read more)

In this post I am going to present a hands on example on how to use the QueryExtender web server control. It is built into ASP.Net 4.0 and it is available from the Toolbox in VS 2010.Before we move on with our example let me explain what this control...(read more)

In this post I am going to present a hands on example on how to use the Chart web server control. It is built into ASP.Net 4.0 and it is available from the Toolbox in VS 2010.It is a very rich feature control that supports many chart types, had support...(read more)

In this post I will try to show you how to use the ImageMap web server control. This is going to be a very easy example. We will write no code but I will use the control to create navigation hotspots. 1) Launch Visual Studio 2010/2005/2008. Express editions...(read more)

In this post I would like to continue talking about validation in ASP.Net applications. I will look into the validation controls that ASP.Net provides. You can have a look at the first post in my blog regarding validation. You will show you that we can...(read more)

I am going to start a new series of posts and I am going to cover in depth all the validation mechanisms/techniques/controls we have available in our ASP.Net applications. As many of you may know, I am a Microsoft Certified Trainer and I will present...(read more)