我目前拥有:下面:用于生成sql db表中所有当前“rides”列表的代码。但是,似乎虽然表中有数据,但我无法访问它。我错过了初始化步骤吗?其他想法?
using (RamRideOpsEntities myEntities = new RamRideOpsEntities())
{
var adminOptions = (from a in myEntities.AdminOptions
select new { a.ValidDate1, a.ValidDate2 }).First();
var allRides = (from r in myEntities.Rides
where (r.TimeOfCall == adminOptions.ValidDate1 ||
r.TimeOfCall == adminOptions.ValidDate2)
orderby r.TimeOfCall descending
select r).ToList();
TextBox1.Text = allRides[0].Name; // <- Seems there are no existing objects as rides[0] is out of bounds
}
答案 0 :(得分:0)
您是否检查过adminOptions变量以确认它是否包含您要包含的内容?
adminOptions变量的ValidDate1和ValidDate2属性是Rides表外部的allRides查询的唯一条件,因此我的猜测是allRides查询可能正常;但是,adminOptions查询可能存在问题。