c# - 如何在 LINQ to SQL 查询中以大写形式输出列？

Question

我想在我的 LINQ 查询中使用 UCASE 或 ToUpper 列。

var query = from rsn in db.RSLReasons
            orderby rsn.REFCMNT
            select new {rsn.REFCODE, rsn.REFCMNT};
dtReasons = query.ToADOTable(rec => new object[] { query });

如果我尝试运行以下代码:

var query = from rsn in db.RSLReasons
            orderby rsn.REFCMNT
            select new {rsn.REFCODE, rsn.REFCMNT.ToString()};
dtReasons = query.ToADOTable(rec => new object[] { query });

我在编译时收到以下错误消息:

Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.

Answer 1

使用 ToUpper()... 但您需要以匿名类型指定属性名称，因为它无法再被推断。

var query = from rsn in db.RSLReasons
            orderby rsn.REFCMNT
            select new {rsn.REFCODE, REFCMNT = rsn.REFCMNT.ToUpper()};

dtReasons = query.ToADOTable(rec => new object[] { query });