More installer migration

Application/Update/VersionFile.cs

@@ -0,0 +1,49 @@
+using Common.Debug;
+using FeedCenter.Properties;
+using System;
+using System.Xml.Linq;
+
+namespace FeedCenter.Update
+{
+    public class VersionFile
+    {
+        public Version Version { get; set; }
+        public string InstallFile { get; set; }
+        public DateTime InstallCreated { get; set; }
+
+        public static VersionFile Load()
+        {
+            try
+            {
+                var document = XDocument.Load(Settings.Default.VersionLocation + Settings.Default.VersionFile);
+
+                var versionInformationElement = document.Element("versionInformation");
+
+                if (versionInformationElement == null)
+                    return null;
+
+                var versionElement = versionInformationElement.Element("version");
+                var installFileElement = versionInformationElement.Element("installFile");
+                var installCreatedElement = versionInformationElement.Element("installCreated");
+
+                if (versionElement == null || installFileElement == null || installCreatedElement == null)
+                    return null;
+
+                var versionFile = new VersionFile
+                {
+                    Version = Version.Parse(versionElement.Value),
+                    InstallFile = installFileElement.Value,
+                    InstallCreated = DateTime.Parse(installCreatedElement.Value)
+                };
+
+                return versionFile;
+            }
+            catch (Exception exception)
+            {
+                Tracer.WriteException(exception);
+
+                return null;
+            }
+        }
+    }
+}