Hi

The last year was a wonderful year for me. I started blogging on the site in august and its been 4 and a half month and the blog seems to be going bigger and bigger everyday.

In the beginning, the traffic was pretty low, but it has gone up with time, people have started giving their comments on the various posts. But (surprisingly for me) many people have been mailing me with their problem and appreciative comments.

It’s been great to answer those and understand different types of problem that can come up. Also this has helped me a lot in learning a lot of new stuff.

Just for statistics, the site has now got 110 posts in various categories and 75 comments on them.

Some of the most popular blogs have been

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Hi

Some time when we want to make major changes to our application or we want to gain the access to the resources that cannot be accessed when the web application is running, we want to take the Application offline.

When we are making some major changes to the web application we do not want the user to use the web application. If the user uses the web application when we are changing the database structure and its related code then it might result in problem.

Hi

In asp.Net 1.X we had to import and use both customs server controls and user control on a page by adding the @Register directives to the top of the page. Once registered developers could then declare these controls anywhere on the page using the tag prefix and tag names configured in the @Register directive.

This is fine but if we have too many user controls across the sites (and that too ascx files) then it can be painful to manage across the site.

Hi

The ability of a thread to execute in a security context different from that of as process owning the thread is called Impersonation.

For web Application this means that if the server is impersonating, it is doing work using the identity of the client that is making the request.

The default setting of the Asp.Net is different from the Asp. By default, Asp.Net does not do pre-request impersonation. The Application can be configured to impersonate on every request with the use of following configuration directive.

<identity impersonate="true" />

Since ASP.NET 2.0 does dynamic compilation, enabling impersonation requires that all accounts have read/write access to the application's Codegen directory (where dynamically compiled objects are stored by the ASP.NET runtime) as well as the global assembly cache (%Windir%\assembly).

Hi

A very common problem people come-up with while working with string data type is how to work with special character. A number of characters have been labeled as special characters. How would you represent a quote within a string, since the compiler interprets a quote as the beginning or end of the string? Whenever you want to use one of these special characters you need to use a technique known as escaping the character.

Here is a list of the string that needs to be used for the purpose of this special character.

\n = New Line
\r = Carriage return
\r\n = Carriage return and New line
\” = Quotation mark
\\ = Backlash character
\t = Tab

Hi

When you are working with the socket class, you can use many socket type. We need to define the type of socket when we create an instance of the socket class. In dot net we have 6 types of Sockets. 

Many a times SocketType implicitly indicates which type of protocolType will be used in the address family. Like when we use the Dgram SocketType the protocoltype will always be Udp. And for Stream SocketType the protocol type will always be Tcp. 

Here is a list of socket types and their uses.

Dgram – This sockettype supports datagrams, which are connection less,
                

In Asp.Net, By default the button control posts back to the same page that contain the button. In most of the cases this behavior is ok. But sometime we want to be able to post to another page in the application. In Asp.Net 1.X we used the Server.Transfer method to move between the pages without changing the URL. 

But in Asp.Net 2.0 we can post to a different page, firing a normal post back to a different page inside the application. We can also access the values of the server control of the source page that initiated the post back.

Hi

In this post I am going to talk about some of the small but useful code used (or required) very commonly in the Windows application. 

To get the path to all the Important folders on the client machine, we need to use the System.Envirement namespace. We use the GetFolderPath and pass the value of type Environment.SpecialFolder. This way we can get the path to most of the important folders on the clients machine.

Hi

Yesterday, a client was asking me to open a pop-up for a link. The problem was that the pop-up window is supposed to be open from a windows application. I knew we can open the browser using the code. The code to that is pretty simple.

System.Diagnostics.Process.Start(URL)

Here is the URL is the URL that should be opened in the browser.  If the URL is empty you will get an exception. 

But what the client wanted was to get a pop-up type display without and buttons, address bar etc…

So I decided to use the in built Web Browser control. The control is pretty simple to use and was more than handy for the purpose. Remember this control is new in the dot net 2.0.

Hi 

I dot net 2.0 we have to type of Installation available to us. One is click once Installation and another old Windows Installer method. Both the methods have some advantages and disadvantages. Both the technologies are designed with different set of goals and are not a replacement for each other.

There are many compelling features in Click once deployments which are not present in the windows Installer. These features are specifically targeted at developers building .NET Framework-based smart client applications that don't have sophisticated configuration requirements. On the other hand Windows Installer is a much broader deployment technology that is inherently designed to be extensible and able to handle any deployment challenge, including .NET applications. 

Here is a quick look at the features and the availability in both deployment processes.