Open a file when it is double clicked

[Chatura Dilan]

I have created a small word processing application, and I have created a new file extension (“.sln”) to save files. Like RichTextBox1.Save (FilePath & “/myFile.sln”) Now, I want to open myFile.sln using my word processing application when I double click Myfile.sln :confused: Do you know any codes to do that? Please help me chatura

[noshaba mariam]

If u want to open file with extension .sln in text box then in my opinion u need to copy the text of the file to clip board and then paste it in text box. In this way it would appear as if file is opening directly in text box :)

[J4amieC]

Chatura Dilan wrote:

Now, I want to open myFile.sln using my word processing application when I double click Myfile.sln

Do you mean when you double click in windows explorer? If so this is a windows setting for the default application associated with a file extension. (eg, for most people .doc will open with MS Word). Tip: If you Right click a file you can choose "Open with..." then simply brose for your exe. As long as your app supports executing with an argument providing the path to the file then all should be dandy (eg, c:\myapp.exe "c:\my files\myfile.sln").

[Chatura Dilan]

Yes I mean that I know that. but it does not work. My application is already associate with .sln files. but when I double click 'myfile.sln', my application starts and loads a new document file. but it does not load 'myfile.sln' chatura

[J4amieC]

First you have to understand what windows does (by default) when you associate a file extension with an executable program. It executes the .exe passing the file name as the first parameter like this: C:\myFolder\MyExecutable "C:\myData\the_file_I_d_clicked.sln" So, you need to support arguments in your executable, and if the first argument is a valid location of a file, then open it at startup instead of a blank document. Here, I wrote a little example for you: I had a textbox and a button, on the button I have this code: String str = tbInput.Text; StreamWriter sr = new StreamWriter(@"C:\test.abc"); sr.Write(str); sr.Close(); Then in my app start code I have this (note: string[] args are the arguments passed into the exe)

if(args.Length>0)
{
	string path = args[0];
	if(Path.GetExtension(path) == ".abc" && File.Exists(path))
	{
		StreamReader sr = new StreamReader(path);
		this.tbInput.Text = sr.ReadToEnd();
		sr.Close();
	}
}

sorry, forgot which forum I was on...here in VB.NET

if(args.Length>0)then

	string path = args[0]
	if(Path.GetExtension(path) = ".abc" and File.Exists(path))then
	
		StreamReader sr = new StreamReader(path)
		this.tbInput.Text = sr.ReadToEnd()
		sr.Close()
	end if
end if

-- modified at 8:24 Thursday 2nd March, 2006

[Omar Mallat]

Hi, If you need to relate an extension type to your application, you can do it using the windows utilites, or a vb code. in windows, it's done using folder options in explorer. but in code I can help you, you should create some keys in the registry, it's very simple. you can also assign an Icon and add commands to it when you right click on a file like Edit in MyApplication or CompileFile... tell me if you need it. but if you need that after having the type related, how to open it so: when you double click on file, it's automatically sent to the related application as arguments. you can select multiple files and press enter so all files will be sent to you application as array of arguments. you can catch all argument while loading application. someone tell you how using C# but can you tell wich version of VB you use?:confused: is it vb.net or vb2005? so I can help you also...:cool: OmarMallat

[Chatura Dilan]

Sure... I'm using VB.Net 2005 I’m very sorry do not try to change the application which associate “.sln” files. They are solution files. I changed my extension. it is “.shln” files. Sorry for my delay chatura

[Chatura Dilan]

Thank you for your reply. I’m trying to change it according to my application.. Sorry for my delay chatura