小编abb*_*med的帖子

我想从具有多个可选值的两个表中搜索数据库中的数据。

[HttpPost]
public ActionResult GetAll(Details objDetail)
{

首先，我正在创建AsQueryable用于查询的对象。

var searchQuery = (from acc in AppDB.tblAccount
                   join user in AppDB.tblUser on acc.uID equals user.uID
                   select new { acc, user }).AsQueryable();

然后我对这个AsQueryable对象一一应用条件。

if (objDetail.Type != null)
    searchQuery = searchQuery.Where(x => x.acc.Type == objDetail.Type);

if (objDetail.Category!= null)
    searchQuery = searchQuery.Where(x => x.acc.Category== objDetail.Category);

if (objDetail.City.Length != 0)
    for (int i = 0; i <= objDetail.City.Length - 1; i++)
    {
        string singleCity = objDetail.City[i];
        searchQuery = searchQuery.Where(x => x.user.City.Contains(singleCity));
    } …