将SQL查询转换为LINQ到SQL查询

如何使用LINQ编写此查询

SELECT CAST(CASE WHEN [IsForReplication] = 1  THEN 'Yes' 
                   ELSE 'No' END AS NCHAR) as [IsForReplication], * 
FROM [SAN].[dbo].[PolicyInterval]

var query = from pi in context.PolicyInterval
            let IsForReplication = pi.IsForReplication ? "Yes" : "No"
            select new
            {
                IsForReplication,
                PolicyInterval = pi,
            };

var result = PolicyInterval.Select(entry => new {IsForReplication = entry.IsForReplication.Equals(1).ToString(), data = entry});