C#图片上传获取二进制流保存至AD

    <form id="form1" runat="server">
    <div>
        <asp:FileUpload ID="FileUploadPhoto" runat="server" />
        <asp:Button ID="UploadPhoto" runat="server" Text="上传" OnClick="UploadPhoto_Click" />
    </div>
    </form>

 protected void UploadPhoto_Click(object sender, EventArgs e)
        {
            string name = FileUploadPhoto.PostedFile.FileName;
            string type = name.Substring(name.LastIndexOf(".")+1);
            //FileStream fs = File.OpenRead(name);
            byte[] content = new byte[FileUploadPhoto.PostedFile.ContentLength];
            //fs.Read(content,0,content.Length);
            //fs.Close();

            Stream fileStream = FileUploadPhoto.PostedFile.InputStream;
            fileStream.Read(content, 0, FileUploadPhoto.PostedFile.ContentLength);
            fileStream.Close();
            ChangeADAccount("刘科","liuke",content);
        }

        /// <summary>
        /// 获得DirectoryEntry对象实例,以管理员登陆AD
        /// </summary>
        /// <returns></returns>
        private static DirectoryEntry GetDirectoryObject()
        {
            DirectoryEntry entry = null;
            try
            {
                entry = new DirectoryEntry("LDAP://10.10.10.1/DC=aaa,DC=com", "账户", "密码", AuthenticationTypes.Secure);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
            }
            return entry;
        }

        /// <summary>
        /// 根据用户公共名称取得用户的 对象
        /// </summary>
        /// <param name="commonName">用户公共名称</param>
        /// <returns>如果找到该用户则返回用户的对象,否则返回 null</returns>
        public static DirectoryEntry GetDirectoryEntry(string commonName)
        {
            DirectoryEntry de = GetDirectoryObject();
            DirectorySearcher deSearch = new DirectorySearcher(de);
            deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName.Replace("\\", "") + "))";
            deSearch.SearchScope = SearchScope.Subtree;
            try
            {
                SearchResult result = deSearch.FindOne();
                de = new DirectoryEntry(result.Path);
                return de;
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                return null;
            }
        }

        /// <summary>
        /// 设置指定的属性值
        /// </summary>
        /// <param name="de"></param>
        /// <param name="propertyName">属性名称?</param>
        /// <param name="propertyValue">属性值</param>
        public static void SetProperty(DirectoryEntry de, string propertyName, string propertyValue)
        {
            if (de.Properties.Contains(propertyName))
            {
                if (String.IsNullOrEmpty(propertyValue))
                {
                    de.Properties[propertyName].RemoveAt(0);
                }
                else
                {
                    de.Properties[propertyName][0] = propertyValue;
                }
            }
            else
            {
                if (!String.IsNullOrEmpty(propertyValue))
                {
                    de.Properties[propertyName].Add(propertyValue);
                }
            }
        }

        /// <summary>
        /// 修改查询到的用户的图像
        /// </summary>

        public static string ChangeADAccount(string CommonName, string Account, byte[] binaryData)
        {
            //获取对应AD实体
            DirectoryEntry user = GetDirectoryEntry(CommonName);
            try
            {
                //SetProperty(user, " sAMAccountName ", Account);
                //user.Invoke("SetPhoto", new object[] { photo });
                user.Properties["thumbnailPhoto"].Add(binaryData);
                user.CommitChanges();
            }
            catch (Exception e)
            {
                Debug.WriteLine(e.Message);
                throw e;
            }
            return user.Path;
        }