Update WindowsRegistryConfigurationExtensions.cs

Author: tiksn

TIKSN.Framework.Maui/Platforms/Windows/Configuration/WindowsRegistryConfigurationExtensions.cs

@@ -5,11 +5,22 @@ namespace TIKSN.Platforms.Windows.Configuration;
 
 public static class WindowsRegistryConfigurationExtensions
 {
-    public static IConfigurationBuilder AddWindowsRegistry(this IConfigurationBuilder configurationBuilder,
-        string rootKey, RegistryView registryView = RegistryView.Default) =>
-        configurationBuilder.Add(new WindowsRegistryConfigurationSource
+    public static IConfigurationBuilder AddWindowsRegistry(
+        this IConfigurationBuilder configurationBuilder,
+        string rootKey,
+        RegistryView registryView = RegistryView.Default)
+    {
+        ArgumentNullException.ThrowIfNull(configurationBuilder);
+
+        if (string.IsNullOrEmpty(rootKey))
+        {
+            throw new ArgumentException($"'{nameof(rootKey)}' cannot be null or empty.", nameof(rootKey));
+        }
+
+        return configurationBuilder.Add(new WindowsRegistryConfigurationSource
         {
             RootKey = rootKey,
             RegistryView = registryView,
         });
+    }
 }