从数据库中取得照片內容後 ,如何得知图片是横的还是阔的?

Question

从数据库中取得照片內容後 ,
如何得知图片是横的还是阔的?

Answer 1

上传前,就要取得图片的width,height和它的type.
之后在显示时,就好控制了.

Answer 2

using System.Windows.Forms;
using System.Reflection;
using System.Drawing;
using System.IO;public static Image GetImage(byte[] imageBytes)
        {
            MemoryStream ms = new MemoryStream(imageBytes);
            Image image = Image.FromStream(ms, true);
            return image;
        } public static Image GetReducedImage(int Width, int Height, Image ResourceImage)
        {
            try
            {
                Image ReducedImage;
                Image.GetThumbnailImageAbort callb = new Image.GetThumbnailImageAbort(ThumbnailCallback);
                ReducedImage = ResourceImage.GetThumbnailImage(Width, Height, callb, IntPtr.Zero);
                return ReducedImage;
            }
            catch
            {
                return null;
            }
        }        public static bool ThumbnailCallback()
        {
            return true;
        }

Answer 3

int fileLength = FileUpload1.PostedFile.ContentLength; //得到文件大小 byte[] fileData = new byte[fileLength]; //创建数组 image = fileData; 错误1无法将型别'byte[]'隐含转换为'System.Drawing.Image'