/// <summary>
        /// Add new Hotkey to Xml
        /// </summary>
        /// <param name="hotkey"></param>
        public void AddHotkey(HotkeyConfiguration hotkey)
        {
            var configXml = new XmlDocument();
            configXml.Load(_xmlConfigurationPath.Value);

            var configParent = configXml.SelectSingleNode("/HotkeyConfigurations");

            if (configParent == null)
            {
                return;
            }

            var configXmlNode = configXml.CreateElement("HotkeyConfiguration");
            var idAttribute = configXml.CreateAttribute("Id");
            idAttribute.Value = hotkey.Id.ToString();
            var keyAttribute = configXml.CreateAttribute("Key");
            keyAttribute.Value = ((int)hotkey.Key).ToString();
            var modifierAttribute = configXml.CreateAttribute("Modifier");
            modifierAttribute.Value = hotkey.Modifier.ToString();
            var pluginNameAttribute = configXml.CreateAttribute("PluginName");
            pluginNameAttribute.Value = hotkey.PluginName;

            configXmlNode.Attributes.Append(idAttribute);
            configXmlNode.Attributes.Append(keyAttribute);
            configXmlNode.Attributes.Append(modifierAttribute);
            configXmlNode.Attributes.Append(pluginNameAttribute);

            configParent.AppendChild(configXmlNode);
            configXml.Save(_xmlConfigurationPath.Value);
        }
        /// <summary>
        /// Handler for AddHotkey Button
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnClickAddHotkeyButton(object sender, RoutedEventArgs e)
        {
            var selectedModifier = (ComboBoxItem) ModifierDropDown.SelectedItem;
            var selectedPluginName = (string) PluginsDropDown.SelectedItem;

            if (selectedModifier == null || selectedPluginName == null || PressedKeyIdentifier.Text == "" ||
                PressedKeyIdentifier.Text == PressAnyKeyText)
            {
                MessageBox.Show("Select Modifier, Key and Plugin");
                return;
            }

            var hotkeyConfig = new HotkeyConfiguration(Guid.NewGuid(), (int) selectedModifier.Tag, _lastPressedKey,
                selectedPluginName);

            _xmlConfiguredHotkeys.AddHotkey(hotkeyConfig);
            ConfiguredHotkeys.Add(hotkeyConfig);

            ModifierDropDown.SelectedItem = null;
            PluginsDropDown.SelectedItem = null;
            PressedKeyIdentifier.Text = "";
        }