#34 Update: Additional Validation & UI Changes

Ensure at least one field is selected, and UI improvements.

Disco.Services/Devices/Exporting/DeviceExportTask.cs

@@ -0,0 +1,47 @@
+using Disco.Models.Repository;
+using Disco.Models.Services.Devices.Exporting;
+using Disco.Services.Tasks;
+using Quartz;
+using System;
+using System.IO;
+using System.Linq;
+using Disco.Data.Repository;
+
+namespace Disco.Services.Devices.Exporting
+{
+    public class DeviceExportTask : ScheduledTask
+    {
+        private const string JobDataMapContext = "Context";
+
+        public override string TaskName { get { return "Export Devices"; } }
+        public override bool SingleInstanceTask { get { return false; } }
+        public override bool CancelInitiallySupported { get { return false; } }
+
+        public static DeviceExportTaskContext ScheduleNow(DeviceExportOptions Options)
+        {
+            // Build Context
+            var context = new DeviceExportTaskContext(Options);
+
+            // Build Data Map
+            var task = new DeviceExportTask();
+            JobDataMap taskData = new JobDataMap() { { JobDataMapContext, context} };
+            
+            // Schedule Task
+            context.TaskStatus = task.ScheduleTask(taskData);
+
+            return context;
+        }
+
+        protected override void ExecuteTask()
+        {
+            var context = (DeviceExportTaskContext)this.ExecutionContext.JobDetail.JobDataMap[JobDataMapContext];
+
+            Status.UpdateStatus(10, "Exporting Device Records", "Starting...");
+
+            using (DiscoDataContext Database = new DiscoDataContext())
+            {
+                context.Result = DeviceExport.GenerateExport(Database, context.Options, this.Status);
+            }
+        }
+    }
+}