无法在选定列表中存储列表 [英] unable to store list in selected list

问题描述

SelectList objselectlist = new SelectList（TestList，Id，CountryName）;





这里testlist是一个列表（它有存储在其中的值值。）我想在objselectlist中获取该值，但它显示为null

SelectList objselectlist = new SelectList(TestList, "Id", "CountryName");


here testlist is a list(it has sme value storing inside it ).i want to get that values in objselectlist but its showing null

推荐答案

尝试这样：

Try like this:

public SelectList GetAllprofsssinList()
{
   var PList = new List<professional();>

   ds = dropdown.GetDropDownList();
   List<SelectListItem> lstProfessional = new List<SelectListItem>();

   for (int record = 0; record <= ds.Tables[1].Rows.Count - 1; record++)
   {
      dynamic row = ds.Tables[1].Rows[record];

      // adding records to list of professional
      lstProfessional.Add(
          new SelectListItem  
          {  
             Text = Convert.ToString(row["ID"]), 
	         Value = Convert.ToString(row[DescriptionName]
          });
   }

  // generate SelectList object
  SelectList testList = new SelectList(lstProfessional);

  // returning list
  return testList;
}

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