private void OpenImage(string fileName)        {            try            {                Process.Start(fileName);            }            catch (Exception ex)            {               // LogHelper.WriteLog("调用默认看图软件打开失败", ex);                try                {                    string arg =                        string.Format(                            "\"{0}\\Windows Photo Viewer\\PhotoViewer.dll\", ImageView_Fullscreen  {1} ",                            Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles)                            , fileName);                    var dllExe = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System),                        "rundll32.exe");                   // LogHelper.WriteLog(string.Format("调用系统默认的图片查看器打开图片，参数为：{0} {1}", dllExe, arg));                    System.Diagnostics.Process.Start(dllExe, arg);                }                catch (Exception e)                {                   // LogHelper.WriteLog("系统图片查看器打开图片失败", ex);                                       //打开文件夹并选中文件                    var argment = string.Format(@"/select,""{0}""", fileName);                    System.Diagnostics.Process.Start("Explorer", argment);                }            }        }

说明，这个代码适用于程序的目标平台为x86

如果是x64，那么就需要做适当修改