上传图片

            <input id="UpPhoto" name="UpPhoto" runat="server" type="file">
            <asp:Button id="btnAdd" name="btnAdd" runat="server" Text="上传"
                onclick="btnAdd_Click"></asp:Button>

 

 string connstr = @"Data Source=WANGRUI-PC\WANGRUI;Initial Catalog=JingDong;Persist Security Info=True;User ID=sa;Password=admin";
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    //获得图象并把图象转换为byte[]
                    HttpPostedFile upPhoto = UpPhoto.PostedFile;
                    int upPhotoLength = upPhoto.ContentLength;
                    byte[] PhotoArray = new Byte[upPhotoLength];
                    Stream PhotoStream = upPhoto.InputStream;
                    PhotoStream.Read(PhotoArray, 0, upPhotoLength);
                    cmd.CommandText = "insert into eBookxinxi(eBimg,eBmimg,eBtj,eBnjj,eBzjj,eBml,eBname,sjid,eBzz,eBjg) values (@FImage,@image,@tj,@njj,@zjj,@ml,@name,@id,@zz,@jg)";
                    cmd.Parameters.Add("@FImage", SqlDbType.Image);
                    cmd.Parameters["@FImage"].Value = PhotoArray;

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建一个图片网页
 if (!Page.IsPostBack)
            {
                SqlConnection conn = new SqlConnection();
                conn.ConnectionString = "Data Source=WANGRUI-PC\\WANGRUI;Database=JingDong;User Id=sa;Pwd=admin";
                string strSql = "select * from eBookxinxi where eBid=1";//这里假设获取id为2的图片
                SqlCommand cmd = new SqlCommand(strSql, conn);
                conn.Open();
                SqlDataReader reader = cmd.ExecuteReader();
                reader.Read();
                Response.ContentType = "application/octet-stream";
                Response.BinaryWrite((Byte[])reader["eBimg"]);
                Response.End();
                reader.Close();
            }