How to Update and Remove the .xaml Image.Source Property using Visual Basic code

Microsoft Visual Studio Community 2019 Version 16.8.4
VB.NET WPF
How to Update and Remove the .xaml Image.Source Property using
Visual Basic code?
<Image x:Name="ImgPicture"
Grid.Column="0"
Margin="30,47,0,0"
Source="C:\CPG\Picture\cat.jpg"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Height="43"
Width="50"
Visibility="Visible"
RenderTransformOrigin="0.78,1.38">
</Image>
The Image Source Property must be included in the above .xaml
I can not leave it blank or remove it without a
"An attribute name is missing" error. I could change the
Visibility="Hidden" to accomplish "Removal."
Picture Box is not available, since I am using WPF .xaml

Behind VB code...
ImgPicture.Source = "C:\CPG\Picture\cat.jpg"
gives a "Value of type 'String' cannot be converted to
'ImageSource' message. It seems it has be a BitmapImage...
Dim myImage As New Image
Dim myBitmap As New BitmapImage

myBitmap.BeginInit()
myBitmap.UriSource = New Uri("C:\CPG\Picture\cat.jpg")
myBitmap.EndInit()

myImage.Source = myBitmap
* ImgPicture.Source = myImage.Source
* The above VB code gives a "Value of type 'String' cannot be converted
to 'ImageSource' message.

If you have any suggestions on how I can Update/Remove the
ImgPicture.Source Property using behind VB code , please let me know.

Thanks in advance.