C#获取类的所有属性

 var path = @"D:\test\1.CSV";
            var records =  OpenExcel(path);
            var groupByFirst = new List<Test> { }; var groupBySecond = new List<Test> { };
            groupByFirst = records.GroupBy(x => x.D).Select(x => x.First()).ToList();
            groupBySecond = records.GroupBy(x => x.D).Select(x => x.Last()).ToList();

            DataTable dt = new DataTable();
            dt.Columns.Add("cishu");
            dt.Columns.Add("point");
            Test tmpS = new Test();
            var keyList = new List<string> { };
            foreach(Test s in groupByFirst)
            {
                dt.Columns.Add(s.D);
                tmpS = s;
            }
            var propertties = tmpS.GetType().GetProperties();

            for (var i = 0; i < propertties.Length; i++)
            {               
                if(propertties[i].Name != "D")
                {
                    DataRow newRow;
                    newRow = dt.NewRow();
                    newRow["cishu"] = "1";
                    newRow["point"] = propertties[i].Name;
                    dt.Rows.Add(newRow);
                    keyList.Add(propertties[i].Name);
                }                
            }