Finished up the profile manager for now and added some code to get the FileViewer started.

DataOrganizer/FileViewer.cs

@@ -12,19 +12,42 @@ namespace DataOrganizer
 {
     public partial class FileViewer : Form
     {
+        private List<DB.Profile> Profiles { get; } = new List<DB.Profile>();
+
         public FileViewer()
         {
             InitializeComponent();
             var db = new DB();
 
-            var profiles = db.GetProfiles();
+            Profiles = db.GetProfiles();
 
-            if(profiles.Count == 0)
+            foreach(var profile in Profiles)
             {
-                // insert
-                var man = new ProfileManager();
-                man.ShowDialog();
+                ProfileComboBox.Items.Add(profile.Name);
             }
+
+            ProfileComboBox.SelectedIndexChanged += ProfileComboBox_SelectedIndexChanged;
+
+            ProfileComboBox.SelectedIndex = 0;
+        }
+
+        private void ProfileComboBox_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            var profile = Profiles[ProfileComboBox.SelectedIndex];
+
+            RootFolderComboBox.Items.Clear();
+
+            if (profile.FolderGroups.Count > 0)
+            {
+                foreach (var folder in profile.FolderGroups)
+                {
+                    RootFolderComboBox.Items.Add(folder.Name);
+                }
+
+                RootFolderComboBox.SelectedIndex = 0;
+            }
+
+            RootFolderComboBox.Enabled = true;
         }
 
         private void FolderSelectButton_Click(object sender, EventArgs e)