如何从XAML应用程序中的相对URI获取所有文件列表？

Question

How to get all files from a folder in XAML application using relative path?

I am playing with a Kinect application built in WPF. All images used in the application are in [project dir]\\Images\\ and all backgrounds are in [project dir]\\Images\\Backgrounds\\ .

I want to get list of all the images from Backgrounds directory using relative path. I have tried

DirectoryInfo(@"\Images\Backgrounds\").GetFiles();

but it says that Backgrounds directory must exist in [full path+project dir]\\debug\\bin\\

Selecting each image manually works fine

Uri uri = new Uri(@"Images\Backgrounds\Background1.png", UriKind.Relative);
ImageSource imgsource = new BitmapImage(uri);
this.Backdrop.Source = imgsource;

Answer 1

It works for a single file because you specify URI to resource embedded in the assembly and not some folder on your drive, whilst GetFiles() will work only on a specific physical folder. So either you need to copy all your images instead of embedding them or use the code below and resourceNames should give you names of all resources that you can reference by URI in your project:

List<string> resourceNames = new List<string>();
var assembly = Assembly.GetExecutingAssembly();
var rm = new ResourceManager(assembly.GetName().Name + ".g", assembly);
try
{
    var list = rm.GetResourceSet(CultureInfo.CurrentCulture, true, true);
    foreach (DictionaryEntry item in list)
        resourceNames.Add((string)item.Key);
}
finally
{
    rm.ReleaseAllResources();
}

if you need then at this point each item.Value contains UnmanagedMemoryStream for each resource.

Answer 2

I would reply to your post instead of posting a solution, but I'm new to this site and dont have that privledge yet.... Hey! Just trying to help.

Anyway, I've had a problem similar to this before concerning DirectoryInfo. Can't remember exactly how I solved it, but I remember the backslashes being tricky. Have you checked out the MSDN site? It seems like it can't find your directory so its looking for it in debug by default. MSDN says the format should be "MyDir\\MySubdir" in C#.