linq to sql

[huangwenquan123]

pds.DataSource = (from d in dc.PsHouse_Chuzu join area in dc.Areas on d.AreaID equals area.AreaID where d.Ps_ID == Convert.ToInt32(Session["PID"]) || d.Md_ID == Convert.ToInt32(Session["MID"]) select d).ToList();
linq to sql 中的||（或）好象用不了
怎么办？要用什么代替？

[BaoShiqiang]

帮顶

[chen_ya_ping]

(d.Ps_ID == Convert.ToInt32(Session["PID"]) || d.Md_ID == Convert.ToInt32(Session["MID"]))试试

||这个是可以用的
代码：
NorthwindDataContext northwindDataContext = new NorthwindDataContext();
IEnumerable<string> querys = from c in northwindDataContext.Customers
where c.CustomerID == "ALFKI" || c.CustomerID == "ANATR"
select c.CompanyName;

foreach (string query in querys)
{
Response.Write(query.ToString() + "<br/>");
}
这个是可以通过的，也有数据显示。

[昕颖]

在linq to sql 中同样是可以用的。。只不过要注意他们之间的优先级。在这里面是挺讲究的

[boyce0721]

pds.DataSource = (from d in dc.PsHouse_Chuzu join area in dc.Areas on d.AreaID equals area.AreaID where （d.Ps_ID == Convert.ToInt32(Session["PID"]) || d.Md_ID == Convert.ToInt32(Session["MID"])） select d).ToList();