How do I convert this scanner code C# code to the WPF VB

<Window x:Class="TestAppWpf.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="TestAppWpf" Height="450" Width="500">
  <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="Auto" />
      <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <StackPanel>
      <GroupBox Header="Source">
        <StackPanel>
          <RadioButton 
            Name="SourceFromTwainUI" 
            IsChecked="True">
            Use TWAIN UI
          </RadioButton>
          <Button 
            Margin="5"             
            IsEnabled="{Binding ElementName=SourceFromTwainUI, Path=IsChecked}"                         
            Click="OnSelectSourceButtonClick">
            Select Source
          </Button>
          <RadioButton Name="SourceUserSelected">Manual source</RadioButton>
          <ComboBox Name="ManualSource" IsEnabled="{Binding ElementName=SourceUserSelected, Path=IsChecked}" />
        </StackPanel>
      </GroupBox>
 
      <Button Margin="5" Name="ScanButton" Click="scanButton_Click">Scan</Button>
      
      <Separator />
 
      <CheckBox Margin="5" Name="UseAdfCheckBox">Use ADF</CheckBox>
      <CheckBox Margin="5" Name="UseDuplexCheckBox">Use Duplex</CheckBox>
 
      <Separator />
 
      <CheckBox Margin="5" Name="UseUICheckBox">Use UI</CheckBox>
      <CheckBox Margin="5" Name="ShowProgressCheckBox">Show Progress</CheckBox>
 
      <Separator />
 
      <CheckBox Margin="5" Name="BlackAndWhiteCheckBox">B & W</CheckBox>
      <CheckBox Margin="5" Name="GrabAreaCheckBox">Grab Area</CheckBox>
 
      <Separator />
 
      <CheckBox Margin="5" Name="AutoDetectBorderCheckBox">Auto Detect Border</CheckBox>
      <CheckBox Margin="5" Name="AutoRotateCheckBox">Auto Rotate</CheckBox>
 
      <Separator />
 
      <Button Margin="5" Click="OnSaveButtonClick">Save</Button>
    </StackPanel>
    <Border Grid.Column="1" BorderThickness="3, 0, 0, 0" BorderBrush="Gray">
      <Image Margin="5" Name="MainImage" Stretch="UniformToFill" />
    </Border>
  </Grid>
</Window>

and code behind C# code is : =

using System;
using System.Drawing;
using System.IO;
using System.Windows;
using System.Windows.Media.Imaging;
using System.Windows.Interop;
using Microsoft.Win32;
using TwainDotNet;
using TwainDotNet.TwainNative;
using TwainDotNet.Wpf;
using TwainDotNet.Win32;

namespace TestAppWpf
{
public partial class Window1 : Window
{
private static AreaSettings AreaSettings = new AreaSettings(Units.Centimeters, 0.1f, 5.7f, 0.1F + 2.6f, 5.7f + 2.6f);

private Twain _twain;
private ScanSettings _settings;

private Bitmap resultImage;

public Window1()
{
InitializeComponent();

Loaded += delegate
{
_twain = new Twain(new WpfWindowMessageHook(this));
_twain.TransferImage += delegate(Object sender, TransferImageEventArgs args)
{
if (args.Image != null)
{
resultImage = args.Image;
IntPtr hbitmap = new Bitmap(args.Image).GetHbitmap();
MainImage.Source = Imaging.CreateBitmapSourceFromHBitmap(
hbitmap,
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
Gdi32Native.DeleteObject(hbitmap);
}
};
_twain.ScanningComplete += delegate
{
IsEnabled = true;
};

var sourceList = _twain.SourceNames;
ManualSource.ItemsSource = sourceList;

if (sourceList != null && sourceList.Count > 0)
ManualSource.SelectedItem = sourceList[0];
};
}

private void OnSelectSourceButtonClick(object sender, RoutedEventArgs e)
{
_twain.SelectSource();
}

private void scanButton_Click(object sender, RoutedEventArgs e)
{
IsEnabled = false;

_settings = new ScanSettings
{
UseDocumentFeeder = UseAdfCheckBox.IsChecked,
ShowTwainUI = UseUICheckBox.IsChecked ?? false,
ShowProgressIndicatorUI = ShowProgressCheckBox.IsChecked,
UseDuplex = UseDuplexCheckBox.IsChecked,
Resolution = (BlackAndWhiteCheckBox.IsChecked ?? false)
? ResolutionSettings.Fax
: ResolutionSettings.ColourPhotocopier,
Area = !(GrabAreaCheckBox.IsChecked ?? false) ? null : AreaSettings,
ShouldTransferAllPages = true,
Rotation = new RotationSettings
{
AutomaticRotate = AutoRotateCheckBox.IsChecked ?? false,
AutomaticBorderDetection = AutoDetectBorderCheckBox.IsChecked ?? false
}
};

try
{
if (SourceUserSelected.IsChecked == true)
_twain.SelectSource(ManualSource.SelectedItem.ToString());
_twain.StartScanning(_settings);
}
catch (TwainException ex)
{
MessageBox.Show(ex.Message);
}

IsEnabled = true;
}

private void OnSaveButtonClick(object sender, RoutedEventArgs e)
{
if (resultImage != null)
{
var saveFileDialog = new SaveFileDialog();
if (saveFileDialog.ShowDialog() == true)
resultImage.Save(saveFileDialog.FileName);
}
}
}
}