<分区>
我想在 linq 查询中将字符串转换为 int 并得到以下错误
Error: LINQ to Entities does not recognize the method 'Int32 ToInt32
在数据库中归档的arID是varchar
var AllArea = (from arr in dbcontext.Areas
join city in dbcontext.Cities on Convert.ToInt32(arr.arID) equals city.cityID
select new
{
arr.arID,
arr.AreaName,
city.cityID,
city.cityName
}).ToList();