Fix: Path cannot be the empty string or all whitespace

Author: loop8ack

src/ExtensionManager.Manifest/Internal/ManifestService.cs

@@ -41,7 +41,12 @@ public async Task<IManifest> ReadAsync(string filePath)
 
     public async Task WriteAsync(string filePath, IManifest manifest, CancellationToken cancellationToken)
     {
-        Directory.CreateDirectory(Path.GetDirectoryName(filePath));
+        var directoryPath = Path.GetDirectoryName(filePath);
+
+        if (string.IsNullOrWhiteSpace(directoryPath))
+            directoryPath = ".";
+
+        Directory.CreateDirectory(directoryPath);
 
         using var stream = File.Create(filePath);
 

src/ExtensionManager/Features/VisualStudioExtensions.cs

@@ -17,14 +17,14 @@ public static async Task<List<IVSExtension>> GetInstalledExtensionsAsync(this IV
     {
         var solution = await solutions.GetCurrentOrThrowAsync();
 
-        if (solution.Name is null or { Length: 0 })
+        if (solution.FullPath is null or { Length: 0 })
         {
             await messageBox.ShowErrorAsync("The solution must be saved in order to manage solution extensions.").ConfigureAwait(false);
 
             return null;
         }
 
-        return Path.ChangeExtension(solution.Name, ".vsext");
+        return Path.ChangeExtension(solution.FullPath, ".vsext");
     }
 
     public static async Task<IVSSolution> GetCurrentOrThrowAsync(this IVSSolutions solutions)