Question

I have a need to be able to open a file on disk but pass in parameters to that file via a querystring. It’s a .SWF file, so I’m passing in the parameter necessary to get it to load correctly.

The code I’m using to do so is:

FileStream fs = new FileStream(@"C:\test\file.swf?key=value", FileMode.Open, FileAccess.Read);

I’m getting an error opening the file: “Invalid characters in path” because of the “?” in the filename. Is there any way to load a file from disk into a FileStream object using a querystring in the filename?

Answer 1

So I solved this problem by putting my two SWF files on a web server and using the following code. Not exactly production ready code, but it illustrates the concept.

private static FileStream GetFileStream()
{
    string url = @"http://www.someurl.com/shell.swf?Filename=actualfile.swf";

    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
    WebResponse response = request.GetResponse();

    byte[] result = null;
    int byteCount = Convert.ToInt32(response.ContentLength);
    using (BinaryReader reader = new BinaryReader(response.GetResponseStream()))
        result = reader.ReadBytes(byteCount);

    return new FileStream(result);
}