Having problems with my Google Earth

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C#

XAML

Hi all,
I need help in this.
Currently I have a Google Earth WPF application, but i have this problem.
It does not show any errors, but the Google Earth doesn't load.
Why is this happening?
Can someone please help me?
Thanks.

I have the following codings:

xx.cs

using System;
using System.Linq;
using System.Xml.Linq;
using System.Windows;
using System.Windows.Input;
using System.Collections.Generic;
using System.Text;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Controls;
using System.Runtime.InteropServices;
using System.Runtime.ExceptionServices;
using System.Data;
using EARTHLib;

namespace xx
{
///

/// Interaction logic for xx.xaml
///

public partial class xx : Page
{
[DllImport("user32.dll")]
static extern int SetParent(int hWndChild, int hWndParent);
IApplicationGE iGeApp;

[DllImport("user32.dll", EntryPoint = "GetDC")]
public static extern IntPtr GetDC(IntPtr ptr);

[DllImport("user32.dll", EntryPoint = "GetWindowDC")]
public static extern IntPtr GetWindowDC(Int32 ptr);

[DllImport("user32.dll", EntryPoint = "IsChild")]
public static extern bool IsChild(int hWndParent, int hwnd);

[DllImport("user32.dll", EntryPoint = "ReleaseDC")]
public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDc);

[DllImport("user32.dll", CharSet = CharSet.Auto)]
public extern static bool SetWindowPos(int hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr PostMessage(int hWnd, int msg, int wParam, int lParam);

//PInvoke declarations
[DllImport("user32.dll", EntryPoint = "CreateWindowEx", CharSet = CharSet.Auto)]
internal static extern IntPtr CreateWindowEx(int dwExStyle,
string lpszClassName,
string lpszWindowName,
int style,
int x, int y,
int width, int height,
IntPtr hwndParent,
IntPtr hMenu,
IntPtr hInst,
[MarshalAs(UnmanagedType.AsAny)] object pvParam);

readonly IntPtr HWND_BOTTOM = new IntPtr(1);
readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
readonly IntPtr HWND_TOP = new IntPtr(0);
readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
static readonly UInt32 SWP_NOSIZE = 1;
static readonly UInt32 SWP_NOMOVE = 2;
static readonly UInt32 SWP_NOZORDER = 4;
static readonly UInt32 SWP_NOREDRAW = 8;
static readonly UInt32 SWP_NOACTIVATE = 16;
static readonly UInt32 SWP_FRAMECHANGED = 32;
static readonly UInt32 SWP_SHOWWINDOW = 64;
static readonly UInt32 SWP_HIDEWINDOW = 128;
static readonly UInt32 SWP_NOCOPYBITS = 256;
static readonly UInt32 SWP_NOOWNERZORDER = 512;
static readonly UInt32 SWP_NOSENDCHANGING = 1024;
static readonly Int32 WM_CLOSE = 0xF060;
static readonly Int32 WM_QUIT = 0x0012;

private IntPtr GEHrender = (IntPtr)0;
private IntPtr GEParentHrender = (IntPtr)0;

internal const int
WS_CHILD = 0x40000000,
WS_VISIBLE = 0x10000000,
LBS_NOTIFY = 0x00000001,
HOST_ID = 0x00000002,
LISTBOX_ID = 0x00000001,
WS_VSCROLL = 0x00200000,
WS_BORDER = 0x00800000;

protected HandleRef BuildWindowCore(HandleRef hwndParent)
{
// start google earth
InitializeComponent();

EARTHLib.ApplicationGE ge = null;
ge = new ApplicationGEClass();

ge.LoadKmlData("/Resources/Etc/GoogleEarth.kml");

int googleearth = ge.GetRenderHwnd();

IntPtr hwndControl = IntPtr.Zero;
IntPtr hwndHost = IntPtr.Zero;
int hostHeight = 200;
int hostWidth = 300;

hwndHost = CreateWindowEx(0, "static", "",
WS_CHILD | WS_VISIBLE,
0, 0,
hostHeight, hostWidth,
hwndParent.Handle,
(IntPtr)HOST_ID,
IntPtr.Zero,
0);

int oldPar = SetParent(googleearth, (int) hwndHost);
// check to see if I'm now a child
if (IsChild(hwndHost.ToInt32(), googleearth)) {
System.Console.WriteLine("now a child");
}

return new HandleRef(this, hwndHost);
}

protected void DestroyWindowCore(HandleRef hwnd)
{
throw new NotImplementedException();
}

}
}

xaml coding:
xx.xaml

<Page x:Class="Visualization_Dashboard.Location_visualization"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
  xmlns:ax="clr-namespace:AxShockwaveFlashObjects;assembly=AxInterop.ShockwaveFlashObjects"
  Title="Hosting Google Earth API in a WPF .NET Application"
  Height="1024" Width="1280" ShowsNavigationUI="False">

</Page>