根據類名如何獲取一個類中字段屬性和字段值

foreach (System.Reflection.PropertyInfo p in InvoiceList[i].GetType().GetProperties())
{
object value = p.GetValue(InvoiceList[i], null);
string ColumnsValueString="";
if (value!=null)
{
賦值：ColumnsValueString = value.ToString();
}else{

//賦值
}

詳例說明：

#region
for (var m = 0; m < modelList.Count; m++)//循環同一個單號下的所有明細
{
   string posLineNo = string.Empty; //單號行號信息
   DataRow drNewRow = dtNew.NewRow();//創建新行
   unit = modelList[m].規格;
   //循環讀取類屬性名，並將屬性值賦值給dataTable中與其對應的字段名
   foreach (System.Reflection.PropertyInfo p in modelList[m].GetType().GetProperties())
   {
       //判斷備注和規格型號
       string columnName = p.Name;

       if (columnName == "PO單號")
       {
           //備注欄中沒有，則從規格型號里獲取
           if (OperateType == string.Empty)
           {
               //拆分規格中的pos單號信息
               PosNoList = new List<PosNoInfo>();
               SplitToArr(unit, ref PosNoList);
               if (PosNoList.Count > 0)
               {
                   drNewRow[columnName] = PosNoList[0].PosNo;
                   posLineNo = PosNoList[0].PosLineNo;
                   PosNoList = new List<PosNoInfo>();
                   continue;
               }

           }
           //備注中只有一條po單號
           else if (OperateType == "AllSameValue")
           {
               drNewRow[columnName] = PosNoList[0].PosNo;
               posLineNo = PosNoList[0].PosLineNo;
               continue;
           }
           else
           {
               //1.po單號等於明細數 2.po單號大於1且po單號小於明細數 3.po單號大於明細數
               var model = PosNoList.Where(a => a.LineNo == m+1).ToList();
               if (model.Count > 0)
               {
                   drNewRow[columnName] = model.First().PosNo;
                   posLineNo = model.First().PosLineNo;
                   continue;
               }

           }

       }
       if (columnName == "PO單號行號")
       {
           drNewRow[columnName] = posLineNo;
           continue;
       }
       object value = p.GetValue(modelList[m], null);
       if (value != null)
       {
           drNewRow[columnName] = value.ToString();
       }
       else
       {
           drNewRow[columnName] = "";
       }
   }
   dtNew.Rows.Add(drNewRow);//追加行內容
}

#endregion