Hello my friends,

 I beg of you to help resolve this issue.

 The menu does not appear anywhere in the main menu is not rendered, is invisible.

 I tried several ways to follow various tutorials, but does not show the menu.

 Below is the code:

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<UserControl xmlns:my="clr-namespace:Hubble" x:Class="Hubble.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"

    xmlns:liquidMenu="clr-namespace:Liquid;assembly=Liquid.Menu"                                  

    xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit" d:DesignHeight="601" d:DesignWidth="799" Margin="0,0,0,0" xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls" xmlns:dataInput="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input">

    <Grid Grid.Row="2" x:Name="LayoutRoot" Width="799" Height="601" ShowGridLines="True" Canvas.ZIndex="1">

        <liquidMenu:MainMenu Background="#FFE8D3D3" Height="25" Margin="0,4" Canvas.ZIndex="3" HorizontalContentAlignment="Stretch" ID="MnuSystem" x:Name="MnuPrincipal" Visibility="Visible" VerticalContentAlignment="Center" VerticalAlignment="Top" HorizontalAlignment="Stretch">

            <liquidMenu:MainMenu.Items>

                <liquidMenu:MainMenuItem ID="MnuSecurity" Text="System" Height="31" Width="536" Visibility="Visible" VerticalAlignment="Center" HorizontalContentAlignment="Left">

                    <liquidMenu:Menu>

                        <liquidMenu:MenuItem ID="MnuLogin" Shortcut="Ctrl+L" Text="Login" />

                        <liquidMenu:MenuDivider />

                        <liquidMenu:MenuItem ID="MnuLogOut" Shortcut="Ctrl+G" Text="LogOut" />

                        <liquidMenu:MenuDivider />

                        <liquidMenu:MenuItem ID="MnuQuit" Text="Quit" />

                    </liquidMenu:Menu>

                </liquidMenu:MainMenuItem>

            </liquidMenu:MainMenu.Items>

        </liquidMenu:MainMenu>

        <controls:TabControl Height="28" HorizontalAlignment="Left" Name="TabDeskTop" VerticalAlignment="Bottom" Width="799" TabStripPlacement="Bottom" FontSize="10" Grid.Row="1">

            <controls:TabItem Header="Login" Name="Tab001" Canvas.ZIndex="2" />

        </controls:TabControl>

    </Grid>

</UserControl>

using System;

using System.Collections.Generic;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Navigation;

using System.Windows.Shapes;

using Liquid;

namespace Hubble

{

    public partial class MainPage : UserControl

    {

        public MainPage()

        {

            InitializeComponent();

            App.Current.Host.Content.Resized += new EventHandler(Content_Resized);

        }

        void Content_Resized(object sender, EventArgs e)

        {

            this.Width = App.Current.Host.Content.ActualWidth;  

            this.Height = App.Current.Host.Content.ActualHeight;

            LayoutRoot.Width = App.Current.Host.Content.ActualWidth;

            LayoutRoot.Height = App.Current.Host.Content.ActualHeight;

            TabDeskTop.Width = App.Current.Host.Content.ActualWidth;

        }

        private void MnuSystem_ItemSelected(object sender, MenuEventArgs e)

        {

            switch (e.Tag.ToString())

            {

                case "MnuLogin":

                    {

                        FrmLogin oFrmLogin;

                        oFrmLogin = new FrmLogin();

                        oFrmLogin.ParentLayoutRoot = LayoutRoot;

                        oFrmLogin.HasCloseButton = false;

                        oFrmLogin.ResizeMode = ResizeMode.CanMinimize;

                        oFrmLogin.Show();

                        break;

                    }

                case "MnuLogOut":

                    // ??? Disconect DataBase PostgreSQL                  

                    break;

                case "MnuQuit":

                    // ??? Exit Page Browser

                    break;

            }

        }

    }

}

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 Thank you!