真爱无限的知识驿站

Code：

       /// <summary>
        /// 计算某年第一周的天数
        /// </summary>
        /// <param name="dt">某年中的一个时间</param>
        /// <returns></returns>
        public static int DaysInFirstweekInYear(DateTime dt)
        {
            DateTime FirstDate = Convert.ToDateTime(string.Format("{0}-1-1", dt.Year));
            int DayOfWeekInYear = DayOfWeek(FirstDate);
            int DaysInFirstWeek = 8 - DayOfWeekInYear;
            return DaysInFirstWeek;
        }
        /// <summary>
        /// 一年中的第几周
        /// </summary>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static int WeekOfYear(DateTime dt)

//c# code

        public string testcookie(string id)
        {
            HttpCookie Cookie;
            Cookie = Request.Cookies["testcookie"];
            string GotoDomain = System.Configuration.ConfigurationManager.AppSettings["GotoDomain"].ToString();
            if (string.IsNullOrEmpty(id))//读取
            {
                string test1 = "";
                if (Cookie != null)
                {
                    test1 = Common.OperateText.Decrypt(Cookie["test1"].ToString());
                }
                return ("{\"读取到的test1\":\"" + test1 + "\",\"code\":\"200\"}");
            }
            else//写入
            {
                Cookie = new HttpCookie("testcookie");
                string test1 = id + "-" + DateTime.Now + GotoDomain;
                Cookie["test1"] = Common.OperateText.Encrypt(test1);
                Cookie.Domain = GotoDomain;
                Cookie.Path = "/";
                Cookie.Secure = false;
                Cookie.Expires = DateTime.Now.AddHours(24);
                Response.Cookies.Add(Cookie);
                return ("{\"写入的test1\":\"" + test1 + "\",\"code\":\"200\"}");
            }
        }

//ActivityFlowContent是实体模型的model类  

//ActivityFlowContentMetadata是自己写的model类

//这两个类属性相同可以形成映射关系，ActivityFlowContent中还可以加其他额外字段

    [MetadataType(typeof(ActivityFlowContentMetadata))]
    public partial class ActivityFlowContent : IBaseEntity
    {
        
        [Display(Name = "活动流程分类")]
        public string ActivityClassificIDOld { get; set; }
        
        #region 自定义属性
        #endregion
    }
    public class ActivityFlowContentMetadata
    {
            [ScaffoldColumn(false)]
            [Display(Name = "主键", Order = 1)]
            public string ID { get; set; }
            [ScaffoldColumn(true)]
            [StringLength(36, ErrorMessage = "长度不可超过36")]
            [Display(Name = "活动分类ID", Order = 2)]
            public object ActivityClassificID { get; set; }
            [ScaffoldColumn(true)]
            [StringLength(200, ErrorMessage = "长度不可超过200")]
            [Display(Name = "活动摘要", Order = 3)]
            public object Sumary { get; set; }
            [ScaffoldColumn(true)]
            [DataType(DataType.MultilineText,ErrorMessage="字符格式不正确")]
            [Display(Name = "活动内容", Order = 4)]
            public object Content { get; set; }
            [ScaffoldColumn(true)]
            [StringLength(50, ErrorMessage = "长度不可超过50")]
            [Display(Name = "关键字", Order = 5)]
            public object Keywords { get; set; }
    }

//文件下载，里面有exe可直接运行

http://download.csdn.net/detail/pukuimin1226/6001759

Code：

        #region CreateThumbnail
        /// <summary>
        /// 生成缩略图
        /// </summary>
        /// <param name="uploadObject">上传的HttpPostedFile或图片物理路径</param>
        /// <param name="uploaddir">上传文件夹相对路径</param>
        /// <param name="ext">后缀（如：.jpg）</param>
        /// <param name="t_width">缩略图宽</param>
        /// <param name="t_height">缩略图高</param>
        /// <param name="filename">文件夹，不含路径和后缀</param>
        /// <param name="tm">枚举类-缩略图的样式</param>
        /// <returns>返回生成图片的路径</returns>
        public static string CreateThumbnail(object uploadObject, string uploaddir, string ext, int t_width, int t_height, string filename, ThumbModel tm)
        {
            System.Drawing.Image thumbnail_image = null;
            System.Drawing.Image original_image = null;
            System.Drawing.Bitmap final_image = null;
            System.Drawing.Graphics graphic = null;
            MemoryStream ms = null;

压缩view的内容，可加过滤器

    public class GzipFilter : ActionFilterAttribute
    {
        public override void OnResultExecuting(ResultExecutingContext filterContext)
        {
            string acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
            if (String.IsNullOrEmpty(acceptEncoding)) return;
            var response = filterContext.HttpContext.Response;
            acceptEncoding = acceptEncoding.ToUpperInvariant();
            if (acceptEncoding.Contains("GZIP"))
            {
                response.AppendHeader("Content-Encoding", "gzip");
                response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
            }
            else if (acceptEncoding.Contains("DEFLATE"))
            {
                response.AppendHeader("Content-Encoding", "deflate");
                response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
            }
        }
    }

//构造Lambda语句

       private static Expression<Func<TElement, bool>> BuildWhereInExpression<TElement, TValue>(Expression<Func<TElement, TValue>> propertySelector, IEnumerable<TValue> values)
        {
            ParameterExpression p = propertySelector.Parameters.Single();
            if (!values.Any())
                return e => false;
            var equals = values.Select(value => (Expression)Expression.Equal(propertySelector.Body, Expression.Constant(value, typeof(TValue))));
            var body = equals.Aggregate<Expression>((accumulate, equal) => Expression.Or(accumulate, equal));
            return Expression.Lambda<Func<TElement, bool>>(body, p);
        }

 2.0.1npoi的dll文件下载：NPOI2.0.1.zip

       public static void test1()
       {
           NpoiHelper np = new NpoiHelper();
           DataTable dt1 = np.ReadExcel(AppDomain.CurrentDomain.BaseDirectory + "1测试数据.xls", 2).Tables[0];//读2003格式数据
           DataSet ds1 = new DataSet();
           ds1.Tables.Add(dt1.Copy());
           ds1.AcceptChanges();
           string SaveFileName = "output1.xls";
           np.CreateExcel2003(SaveFileName, "sheet001", ds1, 0);//写2003格式数据

using LitJson;
       //可到 http://sourceforge.net/projects/litjson/?source=dlp  下载
       protected void Page_Load(object sender, EventArgs e)
       {
           String str = "{'name':'j1','id':1,'items':[{'itemid':1001,'itemname':'it1'},{'itemid':1002,'itemname':'it2'}]}";
           //*** 读取JSON字符串中的数据 *******************************            
           JsonData jd = JsonMapper.ToObject(str);
           String name = (String)jd["name"];
           int id = (int)(jd["id"]);
           Response.Write(string.Format("name:{0},id:{1}<br/>",name,id));
           JsonData jdItems = jd["items"];

}