open file directly

Question

I created a text editor in C# and I use a special file extension for the XML file that my program uses. When I use "Open With..." from the Windows context menu, my program doesn't read the file and I get an error.

How do I fix this?

This question is too specific. Could you be somewhat vaguer? — Adam Crossland, Apr 13 '10 at 18:18
it doesn't need code i want to know the functions,objects or methods i can use to open file directly from open,with out opening the program first and use open button to open file — khtaby, Apr 13 '10 at 18:24

Igby Largeman · Accepted Answer · 2010-04-13T19:02:44.117

2

In your Main() method, you need to capture the file name:

static void Main(string args[])
{
   string fileName;
   if (args.Length > 0)
      fileName = args[0];

   ...
}

Then you'll need to pass fileName to the code that opens the file. How you do that is up to you.

If your Main() method has no parameters, just add the string args[] parameter and the runtime will take care of populating the array with the commandline parameters.

If you are already doing that, then this is probably a SuperUser question.

edited Apr 13 '10 at 19:02

answered Apr 13 '10 at 18:26

Igby Largeman

16,495
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but the Main like that static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } it doesn't have any parameters – khtaby Apr 13 '10 at 18:31
Add the `string args[]` parameter and the OS will provide the array of command line parameters. Both are valid signatures for `Main`. – Ron Warholic Apr 13 '10 at 18:48
@khtaby: just add the args[] parameter yourself (see edited question). – Igby Largeman Apr 13 '10 at 18:48

score 1 · Answer 2 · answered Apr 13 '10 at 18:32

1

but the Main like that

static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }

it doesn't have any parameters

answered Apr 13 '10 at 18:32

khtaby

41
4

Please don't add comments as answers. – Ron Warholic Apr 13 '10 at 18:48

score 1 · Answer 3 · answered Apr 13 '10 at 18:40

1

you can use this simple code to answer me

   private void button1_Click(object sender, EventArgs e)
    {
        richTextBox1.Text = File.ReadAllText(@"d:\wifi.txt");
    }

the text viewed in the richtextbox1

answered Apr 13 '10 at 18:40

khtaby

41
4

open file directly

3 Answers3