diff --git a/Toolkit.Avalonia/FileProvider.cs b/Toolkit.Avalonia/FileProvider.cs
index bd6d31a..a82184e 100644
--- a/Toolkit.Avalonia/FileProvider.cs
+++ b/Toolkit.Avalonia/FileProvider.cs
@@ -18,7 +18,7 @@ public class FileProvider(ITopLevelProvider topLevelProvider) :
                 {
                     new(filter.Name)
                     {
-                        Patterns = filter.Extensions.Select(x => $"*.{x}").ToList()
+                        Patterns = filter.Extensions is { Count: > 0 } ? filter.Extensions.Select(x => $"*.{x}").ToList() : ["*.*"]
                     }
                 }
             });
diff --git a/Toolkit.Foundation/FileDescriptor.cs b/Toolkit.Foundation/FileDescriptor.cs
new file mode 100644
index 0000000..276d331
--- /dev/null
+++ b/Toolkit.Foundation/FileDescriptor.cs
@@ -0,0 +1,4 @@
+namespace Toolkit.Foundation;
+
+public record FileDescriptor(string Name, string Path, int Size) :
+    IFileDescriptor;
\ No newline at end of file
diff --git a/Toolkit.Foundation/IFileDescriptor.cs b/Toolkit.Foundation/IFileDescriptor.cs
new file mode 100644
index 0000000..f45a4c7
--- /dev/null
+++ b/Toolkit.Foundation/IFileDescriptor.cs
@@ -0,0 +1,10 @@
+namespace Toolkit.Foundation;
+
+public interface IFileDescriptor
+{
+    string Name { get; } 
+
+    string Path { get; }
+
+    int Size { get; }
+}
diff --git a/Toolkit.Foundation/IImageDescriptor.cs b/Toolkit.Foundation/IImageDescriptor.cs
index 328b06e..169fd84 100644
--- a/Toolkit.Foundation/IImageDescriptor.cs
+++ b/Toolkit.Foundation/IImageDescriptor.cs
@@ -2,9 +2,9 @@
 
 public interface IImageDescriptor
 {
-    public object Image { get; }
+    object Image { get; }
 
-    public int Width { get; }
+    int Width { get; }
 
-    public int Height { get; }
-}
\ No newline at end of file
+    int Height { get; }
+}