Rotate gauge needle in C# (WPF/.NET 4.5.1)

I cannot rotate the needle properly around its center without clipping occurring. The code I have found for rotation that doesn't result in clipping rotates the needle the wrong way. I found the code samples somewhere from stackoverflow.

Pic1 : correct position pointing south

Pic2 : RotateBitmap4(), rotation at wrong position, no clipping

Pic3 : RotateBitmap5(), correct rotation point but clipping

Pic4 : RotateBitmap5(), correct rotation point but clipping

        private void ButtonTestImage_OnClick(object sender, RoutedEventArgs e)
    {
        var backgroundImage = new Bitmap(TextBox1.Text);
        var foregroundImage = new Bitmap(TextBox2.Text);
        foregroundImage = ResizeBitmap(foregroundImage, 13, 65);

        //Wrong rotation, no clipping
        //foregroundImage = RotateBitmap4(foregroundImage, float.Parse(TextBoxAngle.Text));

        //Clipping!
        //foregroundImage = RotateBitmap5(foregroundImage, float.Parse(TextBoxAngle.Text));
        Console.WriteLine("foregroundImage width = " + foregroundImage.Width);
        Console.WriteLine("foregroundImage height = " + foregroundImage.Height);
        var finalImage = new Bitmap(320, 240);
        using (var graphics = Graphics.FromImage(finalImage))
        {
            //set background color
            graphics.Clear(System.Drawing.Color.Black);

            graphics.DrawImage(backgroundImage, new System.Drawing.Rectangle(0, 0, backgroundImage.Width, backgroundImage.Height));
            //graphics.DrawImage(foregroundImage, new System.Drawing.Rectangle(int.Parse(TextBoxXOffset.Text), int.Parse(TextBoxYOffset.Text), foregroundImage.Width, foregroundImage.Height));
            graphics.DrawImage(foregroundImage, new System.Drawing.Rectangle(int.Parse(TextBoxXOffset.Text), int.Parse(TextBoxYOffset.Text), foregroundImage.Width, foregroundImage.Height));
        }
        var image = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(finalImage.GetHbitmap(),IntPtr.Zero,System.Windows.Int32Rect.Empty,BitmapSizeOptions.FromWidthAndHeight(320, 240));
        ImageTest.Source = image;

        var newAngle = float.Parse(TextBoxAngle.Text) + 20;
        if (newAngle >= 360)
        {
            newAngle = 0;
        }
        TextBoxAngle.Text = (newAngle).ToString();
    }

    private Bitmap RotateBitmap5(Bitmap b, float angle)
    {
        //Create a new empty bitmap to hold rotated image.
        //Bitmap returnBitmap = new Bitmap(b.Width, b.Height);
        Bitmap returnBitmap = new Bitmap(b.Height+500, b.Height+500);
        //Make a graphics object from the empty bitmap.
        Graphics g = Graphics.FromImage(returnBitmap);
        //move rotation point to center of image.
        g.InterpolationMode = InterpolationMode.HighQualityBicubic;
        g.TranslateTransform((float)b.Width / 2, (float)b.Height / 2);
        //Rotate.        
        g.RotateTransform(angle);
        //Move image back.
        g.TranslateTransform(-(float)b.Width / 2, -(float)b.Height / 2);
        //Draw passed in image onto graphics object.
        g.DrawImage(b, new System.Drawing.Point(0, 0));
        return returnBitmap;
    }

    public Bitmap RotateBitmap4(Bitmap b, float angle)
    {
        if (angle > 0)
        {
            int l = b.Width;
            int h = b.Height;
            double an = angle * Math.PI / 180;
            double cos = Math.Abs(Math.Cos(an));
            double sin = Math.Abs(Math.Sin(an));
            int nl = (int)(l * cos + h * sin);
            int nh = (int)(l * sin + h * cos);
            Bitmap returnBitmap = new Bitmap(nl, nh);
            Graphics g = Graphics.FromImage(returnBitmap);
            g.TranslateTransform((float)(nl - l) / 2, (float)(nh - h) / 2);
            g.TranslateTransform((float)b.Width / 2, (float)b.Height / 2);
            g.RotateTransform(angle);
            g.TranslateTransform(-(float)b.Width / 2, -(float)b.Height / 2);
            g.DrawImage(b, new System.Drawing.Point(0, 0));
            return returnBitmap;
        }
        else return b;
    }