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);
               }                
           }