C# PictureBox rotate vertical

Question

i have create a picture box that shows an image while values changes.I want to show from bottom to top. The only way that i found is from left to right and from top to bottom

this is the code that i use now from Top to Bottom

//suspbar1.Image.RotateFlip(RotateFlipType.);
suspbar1.Height = 0;
suspbar1.Height = suspbar1.Height + 1;
suspbar1.Height = Convert.ToInt32(SuspensionTravel0 * 1000 / 1.55);

*suspbar1 is my picturebox.