Renamed the database selector form to "Login Form" and updated its UI. Moved database initialization to the login form. Made the exit file menu option on the main form functional.

AdvertsingProfitControl/Properties/Settings.Designer.cs

@@ -12,7 +12,7 @@ namespace AdvertsingProfitControl.Properties {
     
     
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.0.1.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.1.0.0")]
     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
         
         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
@@ -34,5 +34,17 @@ namespace AdvertsingProfitControl.Properties {
                 this["ConnectionString"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("(LocalDb)\\MSSQLLocalDB")]
+        public string DefaultServer {
+            get {
+                return ((string)(this["DefaultServer"]));
+            }
+            set {
+                this["DefaultServer"] = value;
+            }
+        }
     }
 }

AdvertsingProfitControl/Properties/Settings.settings

@@ -5,5 +5,8 @@
     <Setting Name="ConnectionString" Type="System.String" Scope="User">
       <Value Profile="(Default)" />
     </Setting>
+    <Setting Name="DefaultServer" Type="System.String" Scope="User">
+      <Value Profile="(Default)">(LocalDb)\MSSQLLocalDB</Value>
+    </Setting>
   </Settings>
 </SettingsFile>