Implemented database backups and restores into the AdvertisingProfitControlData DLL and added a form, DatabaseRecovery, to manage the backups and restores. Updated the installer to include the data DLL file into the install bundle.

AdvertsingProfitControl/FrmLoginForm.cs

@@ -1,5 +1,8 @@
 using System;
 using System.Data.SqlClient;
+using System.IO;
+using System.Security.AccessControl;
+using System.Security.Principal;
 using System.Windows.Forms;
 using AdvertisingProfitControlData;
 using Microsoft.Win32;
@@ -13,6 +16,19 @@ namespace AdvertsingProfitControl
         public FrmLoginForm()
         {
             InitializeComponent();
+            //Check to see if the backup folder exists.
+            if (!Directory.Exists(Backup.DefaultBackupLocation))
+            {
+                Directory.CreateDirectory(Backup.DefaultBackupLocation);
+                //Create it and set its permissions so SQL can write to it.
+                //Reference: https://stackoverflow.com/questions/5298905/add-everyone-privilege-to-folder-using-c-net
+                var sec = Directory.GetAccessControl(Backup.DefaultBackupLocation);
+                // Using this instead of the "Everyone" string means we work on non-English systems.
+                var everyone = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
+                sec.AddAccessRule(new FileSystemAccessRule(everyone, FileSystemRights.Modify | FileSystemRights.Synchronize, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
+                Directory.SetAccessControl(Backup.DefaultBackupLocation, sec);
+            }
+            //Scan the registry for SQL server instances (not the recommended way).
             var registryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
             using (var hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, registryView))
             {
@@ -57,7 +73,7 @@ namespace AdvertsingProfitControl
                 }
                 ConnectionSuccessful = true;
                 //Try to initialize the database.
-                var db = new AdvertisingProfitControlModel(connectionString);
+                var db = new AdvertisingProfitControlDbContext(connectionString);
                 //Force the UI thread to draw the label's text so the user can see it.
                 informationLabel.Text = @"Connection successful! Preparing main form...";
                 informationLabel.Invalidate();