mouse wheel event is not getting executed - wpf

Question

I am trying to use canvas inside windows form and zoom and pan that canvas for that first i put element host and then put canvas inside it and then put picture box in canvas and then trying to zoom canvas i have tried various ways but event of any control does not executed i have also written all mouse wheel events but no one is executed so please suggest me solution below is my code for adding controls and mouse wheel events
elementHost1.Height = picVarify.Height;
elementHost1.Width = picVarify.Width;
elementHost1.Location = picVarify.Location;
touchcanvas = new System.Windows.Controls.Canvas();
WindowsFormsHost hst = new WindowsFormsHost();
hst.Name = "Host";
hst.Child = picVarify;
hst.Height = picVarify.Height;
hst.Width = picVarify.Width;
touchcanvas.Height = picVarify.Height;
touchcanvas.Width = picVarify.Width;
touchcanvas.Children.Add(hst);
zm = new ZoomAndPan.ZoomAndPanControl();
zm.Name = "zm";
zm.Content = touchcanvas;
zm.MouseWheel += new System.Windows.Input.MouseWheelEventHandler(zoomAndPanControl_MouseWheel);
elementHost1.Child = zm;
touchcanvas.MouseWheel += new System.Windows.Input.MouseWheelEventHandler(touchcanvas_MouseWheel);
hst.MouseWheel += new System.Windows.Input.MouseWheelEventHandler(hst_MouseWheel);
picVarify.MouseWheel += new MouseEventHandler(picverify_MouseWheel);

Answer 1

here is the code that's working fine for me. I added canvas inside a canvas and set background property of both canvases.
XAML
<Window x:Class="WpfStack.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid x:Name="rootGrid" Margin="10,0,0.4,3.8">
<Canvas Name="BaseCanvas" Background="AliceBlue" Margin="10,0,0,10">
</Canvas>
</Grid>
Code
public MainWindow()
{
InitializeComponent();
Canvas touchcanvas = new System.Windows.Controls.Canvas();
touchcanvas.Height =100;
touchcanvas.Width = 100;
touchcanvas.Background = Brushes.Transparent;
touchcanvas.MouseWheel += new System.Windows.Input.MouseWheelEventHandler(touchcanvas_MouseWheel);
BaseCanvas.Children.Add(touchcanvas);
BaseCanvas.Background = Brushes.Transparent;
}
public void touchcanvas_MouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs args)
{
args.Handled = true;
}