c# - 从 linq var 添加项目到列表

Question

我有以下查询:

    public class CheckItems
    {
        public String Description { get; set; }
        public String ActualDate { get; set; }
        public String TargetDate { get; set; }
        public String Value { get; set; }
    }



   List<CheckItems>  vendlist = new List<CheckItems>();

   var vnlist = (from up in spcall
               where up.Caption == "Contacted"
                      select new CheckItems
                      {
                          Description = up.Caption,
                          TargetDate = string.Format("{0:MM/dd/yyyy}", up.TargetDate),
                          ActualDate = string.Format("{0:MM/dd/yyyy}", up.ActualDate),
                          Value = up.Value
                      }).ToList();

//接下来，当我尝试将 vnlist 添加到 vendlist 时，出现错误，因为我无法将其添加到我获得的列表中，并提示我有一些无效参数

         vendlist.Add(vnlist);

Answer 1

如果您需要将任何 IEnumerable 元素集合添加到您需要使用的列表中 AddRange .

vendlist.AddRange(vnlist);