Add inline mouse-triggered search button in search field

UserControls/PortalSearch.xaml.cs

@@ -36,14 +36,21 @@ namespace C4IT_CustomerPanel.UserControls
         {
             if (e.Key == Key.Enter)
             {
-                OnSearchClicked(sender, null);
+                ExecuteSearch();
+                e.Handled = true;
             }
         }
 
-        private void OnSearchClicked(object sender, MouseButtonEventArgs e)
+        private void OnSearchButtonClick(object sender, RoutedEventArgs e)
         {
-            if (string.IsNullOrEmpty(TxtSearchTerm.Text.Trim()))
+            ExecuteSearch();
+        }
+
+        private void ExecuteSearch()
+        {
+            if (string.IsNullOrWhiteSpace(TxtSearchTerm.Text))
                 return;
+
             string searchTerm = WebUtility.UrlEncode(TxtSearchTerm.Text.Trim());
             if (MainWindow.MainInstance.ConfigSettings.GetConfig()._isUUX)
             {