Open Program with dragging file(PDF) and even recover the path

Question

Hello, I am with a little complicated need, I am developing an application that sends pdf files to an application via webservices. I just want to let this problem begin in a few different ways. I will try to explain by example. When I have a file in Work and drag it to a shortcut the word the same is opened, and this happens with several programs. Or when you right-click on a word file and in the context menu "send to " windows word appears and it opens the file. I would like my application to work in this way. I’m working C# Windows Forms in Visual Studio. I was able to get a similar function by dragging the file to the textbox with the Dragdrop Event. I’ve done a lot of Google, but I don’t know if I’m looking the wrong way, because I can’t find anything. If anyone has ever done anything like this or has any idea how to do it.

Answer 1

Just handle the arguments started next to the application. With this you can even call the application from the command line, like this:

enviarpdf.exe "c:\pdf\arquivo.pdf"

to treat the arguments, simply declare a string array as a method parameter main:

    static void Main(string[] args)
    {

        if (args.Length != 0)
        {
            string arg = args[0];
            MessageBox.Show(arg);
        }

     }

How your application is winforms and whereas you need the path within Form1, it could be done so:

    static void Main(string[] args)
    {

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1(args.Lenght >0 ? args[0] : null));

     }

Thus, the first argument will be passed to Form1.

ps. Of course, in Form1, you must put the constructor to receive a string type parameter.

public Form1(string _arquivo)
{
   InitializeComponent();
   ArquivoPdf = _arquivo;
}