This issue came up a while ago, but after getting deeper into C# I’ve now been able to track down the answer.

The problem involved loading a dynamic flash file into C# on the fly while still being able to load a default in its absence. You could of course use an XML file but then you would just have to edit it each time you used a different path – lame.

So this solution allows for you to drag a file/files onto an application’s icon, and retrieve a list of those dropped items. If it can’t find your file extension in the argument’s array it’ll return the path to your default file.

public String getSWFPath ( )
{
    String[] arguments = Environment.GetCommandLineArgs();
    if (arguments.Length > 0)
    {
        for (int i = 0; i < arguments.Length; i++)
        {
            String arg = arguments[i];
            if ( arg.IndexOf(".swf") >= 0 ) return arg;
        }
    }

    // DEFAULT PATH
    return Directory.GetCurrentDirectory() + Path.DirectorySeparatorChar + “default.swf”;
}

The best part about this is just how easy it is to get that list.

String[] arguments = Environment.GetCommandLineArgs();

One thing to keep in mind ( at least for me ) was that the first array element is a reference to the application being launched. If you drop multiple files I couldn’t tell if they were in any specific order, so I chose to loop through the array instead of picking a consistent element index.