linq到对象查询以排除0

Question

I have a Linq query as below.

var DataSource = from m in product
                 select new { Class = m.Class, Id = (new Make(m.Id)).ProductName};

I instantiate a class called Make and fetch the ProductName based on the Id . Some of the Id's are 0. Is there a way I can exclude all the Id's that are 0?

Answer 1

Sure, just do this:

var DataSource = from m in product
                 where m.Id != 0
                 select new
                 {
                     Class = m.Class,
                     Id = (new Make(m.Id)).ProductName
                 };

Answer 2

您正在寻找where子句：

where m.Id != 0

Answer 3

var DataSource = from m in product
                 where m.Id != 0
                 select new
                 {
                     Class = m.Class,
                     Id = (new Make(m.Id)).ProductName
                 };

Answer 4

Try this:

var DataSource = from m in product
                               where m.Id != 0
                               select new { Class = m.Class, Id = (new Make(m.Id)).ProductName};