Tif image file does not loaded it showns error

<Grid>
        <StackPanel Orientation="Horizontal" Background="LightBlue" Height="40" VerticalAlignment="Top" >
            <Label Margin="10,0,0,0" Height="23" Name="Label1">
                Current File:
            </Label>
            <Label Margin="5,0,0,0" Height="25" Name="FileNameLabel" Width="300" />
            <Button Margin="5,0,0,0" Height="23" Name="BrowseButton" Width="75" Click="BrowseButton_Click">
                Browse
            </Button>
        </StackPanel>
        <StackPanel >
            <Image Name="ImageViewer1" Height="400" Width="400" />
        </StackPanel>
    </Grid>

C# code
private void BrowseButton_Click(object sender, RoutedEventArgs e)
      {
          Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
          dlg.InitialDirectory = &quot;c:\\&quot;;
          dlg.Filter = &quot;Image files (*.jpg)|*.jpg|All Files (*.*)|*.*&quot;;
          dlg.RestoreDirectory = true;
          bool? result = dlg.ShowDialog();
          if (dlg.ShowDialog ==System.Windows.Forms.DialogResult.OK)//this lines shown error
          {
              string selectedFileName = dlg.FileName;
              FileNameLabel.Content = selectedFileName;
              BitmapImage bitmap = new BitmapImage();
              bitmap.BeginInit();
              bitmap.UriSource = new Uri(selectedFileName);
              bitmap.EndInit();
              ImageViewer1.Source = bitmap;
          }
      }

when build the solution shown this error 

operator'==' cannot be applied to operands of type 'methodgroup' and 'System.Windows.Forms.DialogResult'

please give me the solution