Στο blog θα βρείτε πολλές ιδέες και σκέψεις σχετικά με τεχνολογίες .Net. Χρήσιμος οδηγός τόσο για καινόυργιους όσο και για έμπειρους προγραμματιστές.

Garbage collection and memory management.

Ημερομηνία: 09.04.2014

Garbage collection is an essential part of .Net architecture since it saves you from the trouble of managing the memory parts you have already used.  We are going to see what garbage collection actually is and what may cause it. Next we'll check out how we can manage memory parts ourselves and talk about the disposed pattern.   Introduction   Garbage collection...

L stands for lambda

Ημερομηνία: 23.02.2014

Lambda expressions are anonymous functions that can be really helpful at times. Alike many other .NET methods, lambda expressions are not the only way to create the algorithm you want, however they may help you in writing code that is much easier to read than the old fashioned way. We are going to see what lambda expressions are and go through some basic applications.   Lambda calculus Even...

Anonymous methods

Ημερομηνία: 12.01.2014

This time we are going to look into some interesting c# elements. That will be anonymous methods. Anonymous methods can help creating pieces of code organized as a method would but instead placing it right in the spot where you would call that method.   Anonymous methods   This article is where we talked about delegates. To sum things up we said that a delegate can be...

Strange little thing called postback.

Ημερομηνία: 25.12.2013

I guess that most people know what postback is. Well, at least most developers that have been using ASP.NET Web Forms. If so, you know that postback is an essential part of your application. In this article we are going to search in depth what postback actually is, how it is created and how it can be used in combination with other parts of web applications.   Brings back memories Probably...

Delegates

Ημερομηνία: 09.12.2013

Delegates are a way to handle methods in a different way than we are used to. They comprise a basic part of the .Net architecture and are important in order to use technologies like lambda expressions. What is a delegate? A delegate is a reference type which can be used as a connection between that and the methods it is assigned. Think of it as a reference type for methods. In a...

Abstract classes and interfaces

Ημερομηνία: 09.11.2013

In this article we are going to talk about abstract classes and interfaces. Both abstract classes and interfaces are a part of .Net's architecture and are not explicit of its web equivalent. They are a way of describing some characteristics a class may have in a way resembling the inheritance model. Yet, though these two may look similar there are a few significant differences and these will...

Enter JSON

Ημερομηνία: 27.10.2013

I have already written some articles concerning AJAX, now it's time to take another step and introduce JSON. Actually JSON is just a format - a standard - not a technique. However it is widely used in combination with AJAX in order to create asynchronous requests resulting in JSON data.   What is JSON? JSON is a data format, nothing more nothing less. The same way...

Sending AJAX requests

Ημερομηνία: 13.10.2013

In a previous article we had some talk concerning AJAX. We used AJAX to read some simple file. Even though this may have seemed to be quite nice it is but a simple example of what AJAX can do. Things are going to get more interesting in this article where we will be talking about AJAX requests. In other words, how to exchange data between an html page and a server page depending on the requests...

Form Validation

Ημερομηνία: 26.08.2013

A form is quite a common element found scattered across web sites. In order to sign in or buy some stuff, we will most probably be presented a list of boxes we will have to fill in. If, however, by mistake you insert in English character within your telephone submission, you are likely to get a notice mentioning that a phone number is meant to contain nothing but numbers. Likewise, most data we...

XML Handling Part 3 - Editing an XML

Ημερομηνία: 18.08.2013

In the previous articles we had quite a lot of talk about XMLs. We learned what XML is, how to read and create XML files. We also talked about XMLDocument. In this article, the last one of the XML series, we are going to use XMLDocument to update existing XML files.   Edit XML values   We are going to use an XML, similar to the one we have been using all along.   <?xml version="1.0" encoding="utf-8"?> <SmsDataSet>  ...