Dynamically Add Watermark On Image ASP.NET C#

Dynamically Add Watermark On Image ASP.NET C#
How to create watermark on image. you can simply create watermarks text on image
//used namespaces

//using System.IO;
//using System.Drawing.Drawing2D;
//using System.Drawing;
//using System.Drawing.Imaging;

///Locate Image from Image folder.
System.Drawing.Image objImage = System.Drawing.Image.FromFile(Server.MapPath("images/Copy.jpg"));
//Taken Actual width anf height From Image
int height = objImage.Height;//height
int width = objImage.Width;//Width
//Create a Bitmap Image
System.Drawing.Bitmap bitmapimage = new System.Drawing.Bitmap(objImage, width, height);// create bitmap with same size of Actual image
//Convert in to a Graphics object
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmapimage);
//Creating Brushe
System.Drawing.SolidBrush brush = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(113, 255, 255, 255));
g.DrawString("Raju.M C# Programmer Kerala,India.Dynamic WaterMark sample", new Font("Arial", 18, System.Drawing.FontStyle.Bold), brush, 0, 100);
Response.ContentType = "image/jpeg";//setting ContentType
bitmapimage.Save(Response.OutputStream, ImageFormat.Jpeg);//save image with dynamic watermark