使用右键单击上下文菜单打开C＃winform，但如何显示所选项？

Question

I have a C# WinForm App that I created to store files in a seperate secure location on the hard drive. I am trying to add functionality to the program by adding a right-click context menu so when a user right-clicks a file (or group of files) in windows, my program is there in the context for them to select. No problem there, I have that part worked out. What I need is to programmatically get that list of files and send it to the program so they are listed in the listbox already.

I am already doing something similar with a multiselect in an OFD, but I dont want them to have to open the program, select browse, find the files and select them when they already have them selected in windows.

There are a ton of programs out that have this functionality (like properties plus, textpad, etc...) I just need a shove in the right direction to help me figure this out.

Thanks in advance,

Dave

Answer 1

If I'm correctly understanding what you've already implemented, then all the files should appear as arguments on the program's command line. You just need a way of extracting each of those file paths and displaying them in your list view.

In C#, the following code will display a message box containing each argument on the command line:

static void Main(string[] args)
{
    foreach(string arg in args)
    {
        MessageBox.Show(arg);
    }
}

But in case you don't want to access these in the Main method, you can also use the Environment class, which provides the static GetCommandLineArgs method . It returns the same array of strings containing the arguments, and you can loop through it the same way.

Answer 2

Here is an article on how to customise Right-Click Menu Options in Windows

Then just as #CodyGray says use the string[] args in your Main method of you program to get the filenames

Answer 3

I am gathering all the arguments and sending them to an ArrayList.

    static void Main(string[] args)
    {
        ArrayList myAL = new ArrayList();

        foreach (string arg in args)
        {
            myAL.Add(arg);
        }

        ALRec nalr = new ALRec();
        nalr.getArrList(myAL);

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }

sending it to ALRec Class

class ALRec 
{
    ArrayList MyArrLst = new ArrayList();

    public void getArrList(ArrayList AL)
    {
        MyArrLst = AL;
    }
}

Why is it starting multiple instances of my App?