AGS.Editor.AGSEditor.LoadUserDataFile C# (CSharp) Method

        private void LoadUserDataFile(string fileName)
        {
            XmlNode docNode = null;
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(fileName);
                if (doc.DocumentElement.Name != XML_USER_DATA_ROOT_NODE_NAME)
                {
                    throw new AGSEditorException("Invalid user data file. This is not a valid AGS user data file.");
                }
                string fileVersion = doc.DocumentElement.Attributes[XML_ATTRIBUTE_VERSION].InnerXml;
                if (fileVersion != LATEST_USER_DATA_VERSION)
                {
                    throw new AGSEditorException("User data file is from a newer version of AGS or an unsupported beta version. Please check the AGS website for a newer version of the editor.");
                }
                string userDataSavedWithEditorVersion = null;
                XmlAttribute editorVersionNode = doc.DocumentElement.Attributes[XML_ATTRIBUTE_EDITOR_VERSION];
                if (editorVersionNode != null)
                {
                    userDataSavedWithEditorVersion = editorVersionNode.InnerText;
                }
                int? versionIndex = null;
                XmlAttribute versionIndexNode = doc.DocumentElement.Attributes[XML_ATTRIBUTE_VERSION_INDEX];
                if (versionIndexNode != null)
                {
                    // From 3.0.2.1 we switched to a simple integer version, it's easier to
                    // compare than using the 4-point version
                    versionIndex = Convert.ToInt32(versionIndexNode.InnerText);
                    if ((versionIndex < 1) || (versionIndex > LATEST_USER_DATA_XML_VERSION_INDEX))
                    {
                        throw new AGSEditorException("This game's user data file is from " +
                            ((userDataSavedWithEditorVersion == null) ? "a newer version" : ("version " + userDataSavedWithEditorVersion))
                            + " of AGS or an unsupported beta version. Please check the AGS website for a newer version of the editor.");
                    }
                }
                docNode = doc.DocumentElement;
            }
            catch (Exception ex)
            {
                Factory.GUIController.ShowMessage("Unable to read the user preferences file. You may lose some of your Preferences settings and may not be able to access Source Control." + Environment.NewLine + Environment.NewLine + "The error was: " + ex.Message, MessageBoxIcon.Warning);
            }

            Factory.Events.OnLoadedUserData(docNode);
            _game.WorkspaceState.FromXml(docNode);
        }