Prevent duplicate execute of my program ?

I use the following code in the program.cs - file in C# 2.0:

     [STAThread]
  
     static void Main()
  
     {
       Application.EnableVisualStyles();
       Application.SetCompatibleTextRenderingDefault(false);
       bool createdNew;
       // To prevent the program to be started twice
       ///Create new mutex
System.Threading.Mutex appMutex = new System.Threading.Mutex (true, Application.ProductName, out createdNew);
       ///if creation of mutex is successful
       if (createdNew)
    {
      Application.Run(new frmServer());
      appMutex.ReleaseMutex();
       }
    else
    {
    /// if the app's already running
string msg = String.Format("The Program \"{0}\" is already running", Application.ProductName);
MessageBox.Show(msg, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Information);
  
      }
       }  

Using .NET to Send Email

E-mail is one of the most common and reliable methods of communication for both personal and business purposes. It also plays an important role in each and every Web site. This role will be in the type of automated e-mails from the server after posting information from a form. You may have noticed these types of e-mails while registering on a site. As soon as you post the form, the server will send an e-mail asking you to confirm either your registration or with the information you entered. If you have to confirm the registration, the server will send you a long URL that you have to click to proceed further with the registration process. A classic example of this functionality is ASP.NET forums. As soon as you register, you will be e-mailed a random password. You will also get e-mails after your post has been accepted by a moderator or if somebody replies to your post. If you are wondering that this is a server magic—it is not. The whole process is made possible with the help of server-side programming languages such as ASP and ASP.NET.

Connection.Execute and Command.Execute

Command.Execute is more versatile, gives you more options, is probably more efficient. It allows you to setup parameters for your sql statements, stored procedures, create Prepared statements etc. You can retrieve information from stored procedure Output and Return Value parameters. It is more work to implement but in my mind worth the effort. It is not limited to stored procedures.
Personally, I never use Connection.Execute.

Market Live

Marketlive offers live streaming stock market and index quotes from BSE & NSE. All data extracted from yahoo.com. Easy to use. Dot net framework 2.0 must be installed on your computer before using of this application.

Check out the link : http://marketlive.sourceforge.net/

C# Tutorial - Using The Built In OLEDB CSV Parser

So, a while ago, one of the other writers here wrote a small tutorial on parsing simple CSV files in C#. It mostly just showed off the string split method, and only worked on really simple CSV files - no quoted fields, etc. Well, we got a comment asking about that, so today I sat down thinking I would write up a more robust parser. But as I read through the RFC that describes CSV files, I thought to myself, am I suffering from NIH (not invented here) syndrome? Do I really need to write a full CSV parser?
And, as you might expect, the answer is no. Not only did I not need to write a parser, I found that there is one that is built into OLEDB subsystem of Windows! And it actually takes fewer lines of code to use this built in parser than it does to do the simple string split algorithm that was in the previous tutorial (and it feels a lot nicer too). I was originally planning on this being a decently long tutorial, when I thought I would write my own parser - but you are actually in for a really short and simple one today. Less for me to write, less for you to read, and more functionality to boot!