Question

我有foreach循环来检索列表项，如：

//Gets the all the records of the Employee,    
var emps = (from n in db.TIMESHEETs
            where n.Empid_ID == 123
            select n);
//gets the number of the records , ex: no. of the records are 2.
int count = emps.Count();//ex: count = 2

//Timesheet model class contains all get and set properties as below

List<Timesheetmodel> list = new List<Timesheetmodel>();
objts.GetTimeSheetDetails = list;
if (emps.Count() > 0)
{
    Timesheetmodel model=new Timesheetmodel()
    foreach (Timesheet ts in emps)
    {
        //from model class     //from Database "Timesheet" Table
        model.PROJ_ID =          ts.PROJ_ID;
        model.SUN_HRS =          ts.SUN_HRS;
        model.MON_HRS =          ts.MON_HRS;
        model.TUE_HRS =          ts.TUE_HRS;
        model.WED_HRS =          ts.WED_HRS;
        model.THU_HRS =          ts.THU_HRS;
        model.FRI_HRS =          ts.FRI_HRS;
        model.SAT_HRS =          ts.SAT_HRS;
        objts.GetTimeSheetDetails.Add(model);
        //HERE ADDING ONLY LAST RECORD OF THE TABLE. I WANT TO ADD ALL THE RECORDS OF THE TABLE BUT ONLY LAST RECORD IS ADDING TO THE LIST
    }
    return View("Timesheet", objts);// RETURNING ONLY LAST RECORD OF THE DATABASE TABLE
}

问题是当我从数据库中获取记录的值并添加到列表时，只有最后一条记录正在添加，但不是表的所有记录。

这是什么解决方案。请帮助我。

Answer 1

在您的代码更改中

       if (emps.Count() > 0)
       {
            Timesheetmodel model=new Timesheetmodel()
            foreach (Timesheet ts in emps)
            {
                //from model class     //from Database "Timesheet" Table
                model.PROJ_ID =          ts.PROJ_ID;
                model.SUN_HRS =          ts.SUN_HRS;
                model.MON_HRS =          ts.MON_HRS;
                model.`enter code here`TUE_HRS =          ts.TUE_HRS;
                model.WED_HRS =          ts.WED_HRS;
                model.THU_HRS =          ts.THU_HRS;
                model.FRI_HRS =          ts.FRI_HRS;
                model.SAT_HRS =          ts.SAT_HRS;
                objts.GetTimeSheetDetails.Add(model);
                //HERE ADDING ONLY LAST RECORD OF THE TABLE. I WANT TO ADD ALL THE RECORDS OF THE TABLE BUT ONLY LAST RECORD IS ADDING TO THE LIST
            }

          }

到

 if (emps.Count() > 0)
 {

            foreach (Timesheet ts in emps)
            {
              Timesheetmodel model=new Timesheetmodel()
                //from model class     //from Database "Timesheet" Table
                model.PROJ_ID =          ts.PROJ_ID;
                model.SUN_HRS =          ts.SUN_HRS;
                model.MON_HRS =          ts.MON_HRS;
                model.`enter code here`TUE_HRS =          ts.TUE_HRS;
                model.WED_HRS =          ts.WED_HRS;
                model.THU_HRS =          ts.THU_HRS;
                model.FRI_HRS =          ts.FRI_HRS;
                model.SAT_HRS =          ts.SAT_HRS;
                objts.GetTimeSheetDetails.Add(model);
                //HERE ADDING ONLY LAST RECORD OF THE TABLE. I WANT TO ADD ALL THE RECORDS OF THE TABLE BUT ONLY LAST RECORD IS ADDING TO THE LIST
            }
  }

Answer 2

你应该在foreach循环中从Timesheetmodel创建一个新实例，如下所示：

if (emps.Count() > 0)
            {

                foreach (Timesheet ts in emps)
                {
                    Timesheetmodel model=new Timesheetmodel();
                    //from model class     //from Database "Timesheet" Table
                    model.PROJ_ID =          ts.PROJ_ID;
                    model.SUN_HRS =          ts.SUN_HRS;
                    model.MON_HRS =          ts.MON_HRS;
                    model.TUE_HRS =          ts.TUE_HRS;
                    model.WED_HRS =          ts.WED_HRS;
                    model.THU_HRS =          ts.THU_HRS;
                    model.FRI_HRS =          ts.FRI_HRS;
                    model.SAT_HRS =          ts.SAT_HRS;
                    objts.GetTimeSheetDetails.Add(model);

                }
            }

仅获取列表中的最后一项

2 个答案: