Update the WinForms and WPF samples to create the URL protocol entries under HKEY_CURRENT_USER

sandbox/OpenIddict.Sandbox.WinForms.Client/Worker.cs

@@ -24,18 +24,18 @@ public class Worker : IHostedService
 
         // Create the registry entries necessary to handle URI protocol activations.
         //
-        // Note: the application MUST be run once as an administrator for this to work,
-        // so this should typically be done by a dedicated installer or a setup script.
-        //
         // Alternatively, the application can be packaged and use windows.protocol to
         // register the protocol handler/custom URI scheme with the operation system.
         try
         {
-            root = Registry.ClassesRoot.OpenSubKey("com.openiddict.sandbox.winforms.client");
+            // Note: this sample creates the entry under the current user account (as it doesn't
+            // require administrator rights), but the registration can also be added globally
+            // in HKEY_CLASSES_ROOT (in this case, it should be added by a dedicated installer).
+            root = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\com.openiddict.sandbox.winforms.client");
 
             if (root is null)
             {
-                root = Registry.ClassesRoot.CreateSubKey("com.openiddict.sandbox.winforms.client");
+                root = Registry.CurrentUser.CreateSubKey("SOFTWARE\\Classes\\com.openiddict.sandbox.winforms.client");
                 root.SetValue(string.Empty, "URL:com.openiddict.sandbox.winforms.client");
                 root.SetValue("URL Protocol", string.Empty);
 

sandbox/OpenIddict.Sandbox.Wpf.Client/Worker.cs

@@ -24,18 +24,18 @@ public class Worker : IHostedService
 
         // Create the registry entries necessary to handle URI protocol activations.
         //
-        // Note: the application MUST be run once as an administrator for this to work,
-        // so this should typically be done by a dedicated installer or a setup script.
-        //
         // Alternatively, the application can be packaged and use windows.protocol to
         // register the protocol handler/custom URI scheme with the operation system.
         try
         {
-            root = Registry.ClassesRoot.OpenSubKey("com.openiddict.sandbox.wpf.client");
+            // Note: this sample creates the entry under the current user account (as it doesn't
+            // require administrator rights), but the registration can also be added globally
+            // in HKEY_CLASSES_ROOT (in this case, it should be added by a dedicated installer).
+            root = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\com.openiddict.sandbox.wpf.client");
 
             if (root is null)
             {
-                root = Registry.ClassesRoot.CreateSubKey("com.openiddict.sandbox.wpf.client");
+                root = Registry.CurrentUser.CreateSubKey("SOFTWARE\\Classes\\com.openiddict.sandbox.wpf.client");
                 root.SetValue(string.Empty, "URL:com.openiddict.sandbox.wpf.client");
                 root.SetValue("URL Protocol", string.Empty);