LINQ查询的语法List< string>
问题描述：
我想尝试这样做...
I am trying to do something like this...
public static List<string> GetAttachmentKeyList()
{
DataClassesDataContext dc = new DataClassesDataContext();
List<string> list = from a in dc.Attachments
select a.Att_Key.ToString().ToList();
return list;
}
Visual Studio正在说...
Visual Studio is saying...
无法将类型System.Linq.IQueryable>隐式转换为System.Collections.Generic.List。
显式转换存在（是否缺少转换？）
Cannot implicitly convert type 'System.Linq.IQueryable>' to 'System.Collections.Generic.List'. An explicit conversion exists (are you missing a cast?)
正确的语法是什么？
答
尝试
public static List<string> GetAttachmentKeyList()
{
DataClassesDataContext dc = new DataClassesDataContext();
List<string> list = ( from a in dc.Attachments
select a.Att_Key.ToString() ).ToList();
return list;
}