Why is there an ASP.NET account on my machine

When you install updates or a new software on your pc, you install soem version of Microsoft .NET Framework. It contains a common runtime application that may be required by applications you’r

How to Open a Redirect in a New Window

You may often use the Response's Redirect method to open new pages, ex:

Response.Redirect("http://www.devtheweb.net");

It will open the url in the same window.

Convert string to datetime Using C#

Sometimes you may have strings to represent dates (ex. 20100102 that represents 2010 January 2), here's an example how it can be converted to DateTime:

string dtString = "20

Using ASP.NET FileUpload to work with Images

I'm writing ability user of my site http://www.devtheweb.net to have ability to change their avatar photos by uploading their own image files.

Detect and Replace URLs in Text using Regex

Here's a simple example how you can detect URLs in some text and replace them with html code for hyperlinks:

string someText = "here's a simple text that contains urls in it li

Display RSS Feeds Using XmlDataSource

It's very easy to display RSS Feeds using XmlDataSource and DataList:

Just copy the code below and replace the DataFile value with the RSS Feed url you want

Get Current Theme Programmatically

Sometimes it's necessary to get the current Theme Name and it's physical folder path (ex. to check if some file exists in the current theme folder).

We usually define the corrent

Add Default ListItem to a DropDownList Control

Sometimes it's usefult to add default ListItem to a DropDownList Control (ex. '[none]' or '[empty]'),

You can do it in two ways:

1st Way -Programmatically:

GridView with LINQ Programatically

Instead of using LinqDataSource to laod data for GridView you can load data for it programatically:

in the aspx file we have simple GridView:

Server.HtmlEncode vs HttpUtility.HtmlEncode

You may wonder what's the difference between Server.HtmlEncode and HttpUtility.HtmlEncode.

Actually, Server is an instance of HttpServerUtility:

Public ReadOnly Property Server As H

Get List of sub Directories

you can get list of all sub directories for a given directory very easy:

public void EnumSubDirectories(string aParentDir /*t 'ex. C:\\Inetpub\\wwwroot\' t*/)
{
&n

gridview hide header

I thought it would be hard to hide gridview's header, even I thought to move to the Repeater control instead of GridView.

But I found that hiding GridView's Header is extremely easy - just

EmptyDataText Property in the Repeater Control

It seems little strange there isn't provided the EmptyDataText property on the Repeater control. Here's a simple way how to display some text when we've a DataSource with empty content + Repeater:<

XmlDataSource GridView Example

Here's a simple example example of using XmlDataSource and GridView:

the xml file:

Displaying multiple static paths by single page

Do you have many pages like these:

http://www.yoursite.com/Default.aspx?page=page1

http://www.yoursite.com/Default.aspx?page=page2

...

http://www.yoursite.com/Defaul

Categories of classes in the System.Security.Cryptography Namespace

Here's a Table for categories of Security Classes in the System.Security.Cryptography Namespace:

Delayed Loading of Page Parts

I've recently had the following issues:

I wanted to add 14 DataSources/GridViews (Each of them connects to different database) on a single page.

When I added them (using the standar

Using MySql in ASP.NET project, cofiguring, exaples with SqlDataSource, GridView, etc

It may sound strange but using MySql database in ASP.NET is really easy. I spend few days trying to create ASP.NET site that uses
MySql DataBase and in this post I'll try to explain all p

What Are You Coding Right Now

Hi friend,

first, sorry the rarely blog postings recently.

I've spend a while for working on a new site:

I'd offer you

Visual Studio 2010 is Coming

Wow, Visual Studio 2010 is coming, here's list of the features:

1. Enhanced User Experience

- Clear UI Organization
- Reduced clutter and complexity
- Improved e

automatic refresh page in some interval with javascript

Hi all,

in this article you can add functionality to your page for automatic refreshing in some interval.

To add this functionality, just copy-paste the code below between

we have just launched a new asp.net related site

Hi all,

I've just launch an asp.net related sites index. I'll try to create an index of all asp.net related sites - genera

Try Catch vs. Using

Maybe, you wonder which is better choice: "try/catch" or "using" ?

well, it seem that they're really different from each other:

The "using" statement c

How to Set Language in web.config

Did you ever wondered when see code like:

<%@ Page Language="C#" %>

if Language couldn't be removed and for examle to be set in the Web.config ?

Well, the a

A New Site for Free Online Test for Developers

Hi all,

I've started a new site for free online tests for developers - asp.net, .net framework, css, javascript, sql, php, etc.

link: Visit it

Maybe it'll be funny to see us :)

Select xml node by other node

In this article I'll try to explain some common xml isue. Let's look at the example:

we have some xml file (list.xml):

Forget about tedious mistakes when Validate through W3C

Let's begin with an example of simple asp.net code:



Fields removed when Download our Products
We've received some mails form our visitors, they asked us why we need to collect their names and e-mails when they download our free products. We've really don't need users names and e-mails. That


How to select all text in textbox when it gets focus
Sometimes it's usefull when your someone clicks in your textbox, whole text inside it to become selected. We use it in 'Link to Us' textbox. Follows example how you can do it:
in aspx page:


LINQ DataContext Class
The DataContext class is the core channel that you use to work with (for example,

  to query or update) your database. For each LTS DBML file you add to your solution, a new

  DataCon


PNGs and Browser Support
While Internet Explorer for Windows 6 (IE6) and previous versions of IE don’t support PNGs’ alphatransparency

  feature, all popular browsers — Safari, Opera, Firefox, and 


Check site loading by different locations in the world
If your site has visitors from all over the world, it may be a good idea to check if it can be accessed and loading time by the different location in the world, 
I found that useful site: <


Fix the SQL Connection Problems
Connecting ASP.NET to a remote SQL Server or SQL Server Express database

  is error-prone and frustrating. If you manage to connect the first time without

  any grief, run out and buy


Encrypt Connection Information
ASP.NET doesn’t serve (display) certain types of files to the browser, including

  configuration files. However, don’t tempt fate by flashing a SQL Server

password in the 


Generate Sitemap for your Site
It's a good idea to add sitemap file to your site. Some hosting providers allow their customers tools for sitemap generation, but if your doesn't you can use this url to generate it (just by typing


Introduction to Design Patterns
Design patterns were introduced in Erich Gamma, Richard Helm, Ralph Johnson,

  and John Vlissides’s seminal work Design Patterns: Elements of Reusable Object-

Oriented Software 


Differences between Components, Controls, and Behaviors
Behaviors, controls, and components are mostly the same. This is the

  case because when compared to the amount of functionality the base component

  type provides, behaviors and cont


What Is LINQ to SQL
Prior to answering this question, you must first understand what LINQ is. LINQ stands for the

  .NET Language Integrated Query and is a new framework extension in .NET 3.5. As the name



Evolution of SQL Server
SQL Server has evolved over the years into the product it is today. The table below gives a summary of

  this process.

  
    Year<


Loading Master Pages Dynamically in ASP.NET 3.5
You can associate different Master Pages dynamically with a content page. This is useful in

  two situations.

  First, you can enable the users of your website to customize the appear


A Brief Overview of Validation in ASP.NET 3.5
Many web applications involve user

  input. The sad fact is, however, that users make mistakes: they skip required fields,

  they put in six-digit phone numbers, and they return all m


Automatically Hiding the Login Control from Authenticated Users
Some websites display a login form at the top of every page. That way, registered users can

  log in at any time to view additional content. The easiest way to add a Login control to all


Check the load time of your website
 
It's a good idea to check the load time of your site, I found that usefult free online tool:
You can check the downloaded size (in KB) of the page, Total Load Time and Averag


Screw it, Lets RE-Design it all
When started the site, there was something in the design that I didn't like, but I couldn't understand exactly what was the problem. So, I make 3 different tries to make the design better, but with


Additional ASP.NET AJAX Libraries
Additionaly to ASP.NET AJAX, many third-party AJAX libraries are available that can be used with ASP.NET. Some are mostly focused on providing JavaScript libraries for use from within the browser t


The Big Problem of WYSIWYG Editors
 
You use WYSIWYG editors in your web apps, don't you ?
I added into current site standard and popular WYSIWYG editor, it was cool as design but there was a problem - it really


New Forum for ASP.NET and Web Started
We've just added a forum to our site: http://www.forums.aspnetsource.com/
If you're somehow related to asp.net and web - have some problems


Optimize Page Loading Part 2 - Tips When work with Images
In this article, we'll continue the series about Optimize Page Loading. Now we'll focus on optimizing when we work with pictures.
1. Use Browser Cache 
When visit p


10 Design Tips
1. Use Only Five to Seven Main Categories
Five and seven are magic numbers in life because remembering a list of five

  to seven things is easy. Any more than that a


C Sharp Features in Framework 3.0
Here's list of new features of C# language in Framework 3.0.
 1. Implicitly Typed Local Variables
 You can use implicitly-typed local variables to store anonymous t


Optimize Page Loading - 20 General Tips and Tricks
Here's list of general tips to speed up the loading time of your pages. 
1. Use Browser Cache 
When visit page for first time, Browser have to download all resource


what is asp.net
*This article is for visitors of the site, who are not familiar with asp.net
ASP.NET is a web application framework developed and marketed by Microsoft, 


Why Client Validation is not enough to secure our web app
We all use asp.net validators (RequiredFieldValidator, CompareValidator, RangeValidator, RegularExpressionValidator, CustomValidator, ValidationSummary) and it's good to use them BUT they will not 


Optimize Page Loading when works with DataBase
I think that speed of loading of site is something very important. If you don't pay attention on site loading, it may cause many problem:
1) many people won't come back to the site (who can


Highlight text in GridView using javascript
Sometimes it's a good idea to highlight some text in the page. We use it when search to highlight the seaching words in the result(for presenting result we use GridView):


Easiest way for Row Numbering in GridView
Sometimes it's good idea to use row numbering in GridView, we use it in http://www.aspnetsource.com/Articles.aspx:
LinqDataSource's EnableInsert   Property  I found that in examlpes:

Latest AspNetSource.com Blog's Articles

Why is there an ASP.NET account on my machine

How to Open a Redirect in a New Window

Convert string to datetime Using C#

Using ASP.NET FileUpload to work with Images

Detect and Replace URLs in Text using Regex

Display RSS Feeds Using XmlDataSource

Get Current Theme Programmatically

Add Default ListItem to a DropDownList Control

GridView with LINQ Programatically

Server.HtmlEncode vs HttpUtility.HtmlEncode

Get List of sub Directories

gridview hide header

EmptyDataText Property in the Repeater Control

XmlDataSource GridView Example

Displaying multiple static paths by single page

Categories of classes in the System.Security.Cryptography Namespace

Delayed Loading of Page Parts

Using MySql in ASP.NET project, cofiguring, exaples with SqlDataSource, GridView, etc

What Are You Coding Right Now

Visual Studio 2010 is Coming

automatic refresh page in some interval with javascript

we have just launched a new asp.net related site

Try Catch vs. Using

How to Set Language in web.config

A New Site for Free Online Test for Developers

Select xml node by other node

Forget about tedious mistakes when Validate through W3C

Fields removed when Download our Products

How to select all text in textbox when it gets focus

LINQ DataContext Class

PNGs and Browser Support

Check site loading by different locations in the world

Fix the SQL Connection Problems

Encrypt Connection Information

Generate Sitemap for your Site

Introduction to Design Patterns

Differences between Components, Controls, and Behaviors

What Is LINQ to SQL

Evolution of SQL Server

Loading Master Pages Dynamically in ASP.NET 3.5

A Brief Overview of Validation in ASP.NET 3.5

Automatically Hiding the Login Control from Authenticated Users

Check the load time of your website

Screw it, Lets RE-Design it all

Additional ASP.NET AJAX Libraries

The Big Problem of WYSIWYG Editors

New Forum for ASP.NET and Web Started

Optimize Page Loading Part 2 - Tips When work with Images

10 Design Tips

C Sharp Features in Framework 3.0

Optimize Page Loading - 20 General Tips and Tricks

what is asp.net

Why Client Validation is not enough to secure our web app

Optimize Page Loading when works with DataBase

Highlight text in GridView using javascript

Easiest way for Row Numbering in GridView