在图片上写字 C#

下面的代码实现了从剪贴板取出图片，然后写上字，保存到文件Image bmap;IDataObject data = System.Windows.Forms.Clipboard.GetDataObject();bmap = (Image)(data.GetData(typeof(System.Drawing.Bitmap)));Graphics g = Graphics.FromImage(bmap);
SolidBrush drawBrush = new SolidBrush(Color.Red);Font drawFont = new Font("Arial", 10, FontStyle.Bold, GraphicsUnit.Millimeter);int xPos = bmap.Height - ( bmap.Height-25 );int yPos = 3; g.DrawString ("zydzydyzydydydyyydydy", drawFont, drawBrush, xPos, yPos);
string sPicPath = "d:\\filename.jpg?http://www.xvna.com";string sPreFix = "d:\\xxx";
Image smBmap ;
smBmap = bmap.GetThumbnailImage(bmap.Width, bmap.Height, null, System.IntPtr.Zero);
smBmap.Save(sPicPath, System.Drawing.Imaging.ImageFormat.Jpeg);
bmap.Save(sPreFix + ".jpg?http://www.xvna.com", System.Drawing.Imaging.ImageFormat.Jpeg);bmap = null;smBmap = null;