本例子主要是讲如何在上传图片上加入一个版权图片。
参数数明:filename, outfilename, copyrightfile如果在web下开发,一定要用虚拟路径。
如果是windows桌面程序,就用Application.StartupPath。
或者两者均用绝对路径。
在调用该方法时,必须先把图片上传到服务器,再在服务器端进行处理。
也必须要指定,原始的未处理的图片是否删除。
/// <summary> /// 在图片上加入图片版权信息 /// </summary> /// <param name="fileName">原始图片</param> /// <param name="outfileName">输出图片</param> /// <param name="copyRightFile">版权图片</param> /// <param name="deleteFile">是否删除原始图片</param> /// <param name="x">版权图片显示的X轴坐标</param> /// <param name="y">版权图片显示的Y轴坐标</param> public void createCopyRightImage(string fileName, string outfileName, string copyRightFile, bool deleteFile, float x, float y) { System.Drawing.Image image = System.Drawing.Image.FromFile(fileName); System.Drawing.Image c_image = System.Drawing.Image.FromFile(copyRightFile); System.Drawing.Bitmap outPut = new System.Drawing.Bitmap(image); System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(outPut); g.DrawImage(c_image, x, y); string extend = fileName.Substring(fileName.LastIndexOf(".") + 1).ToLower(); switch(extend) { case "bmp" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Bmp); break; case "jpg" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Jpeg); break; case "gif" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Gif); break; case "icon" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Icon); break; case "png" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Png); break; case "tif" : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Tiff); break; default : outPut.Save(outfileName, System.Drawing.Imaging.ImageFormat.Jpeg); break; } g.Dispose(); outPut.Dispose(); image.Dispose(); c_image.Dispose(); if(deleteFile) { System.IO.File.Delete(fileName); } } 
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