How to open same type of file in a single instance of the application using C#

[bloreboy]

Hi,


In .Net 2005 Win forms, My application will generate a file with the extention of .rrt. When ever i m opening this file from any location it has to associate with my applicaiton and open in it. Currently it is opening as said above. But when i am trying to open another file it is one more instance of my application. How to avoid opening one more instance of my application and open the selected file in the existing instance of the application? Thanks in advance.

With
bloreboy

[shweta123]

Hi,

What do you mean by opening a file in same Instance of Application?
Is your file is another application and you are opening it Process.Run?
Also can you please specify some of your code details?

[bloreboy]

Hi,

My application is generating a file with the extention of .rrt. I used file association. It means, when i am trying to open the .rrt file from windows explorer it will open that file into my application. My problem is, when i am trying to open one more file its not open with the existing instance of the application. It is opening one more instance of the application and opening the file into that. It should have to open in the same instance of my application.

In MainForm.cs,

public MainForm(string[] args)
{
if (args.Length > 0)
{
-- - - ---
- - ----
}
}


And in Program.cs,

static void Main(string[] args)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(fals e);
Application.Run(new MainForm(args));
}


thanks,
bloreboy

Hi,

What do you mean by opening a file in same Instance of Application?
Is your file is another application and you are opening it Process.Run?
Also can you please specify some of your code details?

[shweta123]

Hi,

See if these links help you

Link1
Link2