C # add watermark to pictures

usingSystem;usingSystem.Collections;usingSystem.Data;usingSystem.Linq;usingsystem.web;usingSystem.Web.Services;usingSystem.Web.Services.Protocols;usingSystem.Xml.Linq;usingSystem.IO;usingSystem.Drawing;namespacewebapptest{/// <summary>    ///Summary description of $codebehindclassname $/// </summary>[WebService (Namespace ="http://tempuri.org/")] [WebServiceBinding (ConformsTo=Wsiprofiles.basicprofile1_1)]  Public classUpload:ihttphandler { Public voidProcessRequest (HttpContext context) {context. Response.ContentType="Text/plain"; Httppostedfile HPF= Context. request.files["Upload"]; if(HPF. ContentLength >0)            {                stringPath = context. Server.MapPath ("~/resource/image/"); if(!directory.exists (path))                {directory.createdirectory (path); }                stringfilename =HPF.                FileName; stringNewFileName = DateTime.Now.ToFileTime () +path.getextension (filename); stringFullName = path +NewFileName; Hpf.                SaveAs (fullname); stringWatermarkfilename = context. Server.MapPath ("~/resource/image/logo.png");                Addwatermark (fullname, watermarkfilename); Context. Response.Write ("Upload Success"); }            Else{context. Response.Write ("Select File"); }                                    }         Public BOOLisreusable {Get            {                return false; }        }        /// <summary>        ///Add Watermark/// </summary>        /// <param name= "FullName" >the full path of the watermark picture needs to be added</param>        /// <param name= "Watermarkfilename" >full path of watermark picture</param>         Public voidAddwatermark (stringFullNamestringwatermarkfilename) {            //D:\projects\VS2008\WebAppTest\WebAppTest\resource\image end no ' \ '            stringDicname =Path.getdirectoryname (fullname); stringNewFileName = DateTime.Now.ToFileTime () +path.getextension (fullname); stringNewfullname = Dicname +"/"+NewFileName; Bitmap BMP=NewBitmap (fullname); intwidth =bmp.            Width; intHeight =bmp.            Height; Bitmap logo=NewBitmap (watermarkfilename); //Set Transparentlogo.            Maketransparent (); using(Graphics g =graphics.fromimage (BMP)) {                //Add a border to a pictureG.drawrectangle (NewPen (Color.green,6),NewRectangle (0,0, Width,height)); //Add WatermarkG.drawimage (logo,width-6-logo. width,height-6-logo.                        Height); } BMP.            Save (Newfullname); Bmp.            Dispose (); Logo.        Dispose (); }    }}

C # add watermark to pictures