Bitmap myBitmap= (Bitmap)Bitmap.FromFile("myimage.jpg");
Graphics myGraphics = Graphics.FromImage(myBitmap);
Rectangle myDrawRectangle = new Rectangle(new Point(X,Y),new Size(Width,Height));//图片位置大小
myGraphics.DrawImage(myDrawBitmap,myDrawRectangle);//绘制图片
myGraphics.Save();//储存状态
myBitmap.Save("yoursavepath");
Graphics myGraphics = Graphics.FromImage(myBitmap);
Rectangle myDrawRectangle = new Rectangle(new Point(X,Y),new Size(Width,Height));//图片位置大小
myGraphics.DrawImage(myDrawBitmap,myDrawRectangle);//绘制图片
myGraphics.Save();//储存状态
myBitmap.Save("yoursavepath");
using System.Drawing.Text;//提供画GDI+图形的高级功能
using System.Drawing.Drawing2D;//提供画高级二维,矢量图形功能
using System.Drawing.Imaging;//提供画GDI+图形的高级功能 而特定目录,你可以用system.io中的DirectoryInfo等类去获取