How should I write this in LINQ?

I have three tables I'm getting info from: User, Field, FieldUserInput. I already know the userId which is what I use to find out what fields the user has input. Then I want to get the value of those fields that the user has input in FieldUserInput.

I first wrote this query in plain old sql but I want to use LINQ as much as possible since that's why I use Entity Framework.

SELECT fielduserinput.field_idField, fielduserinput.userInput, fielduserinput.time
FROM fielduserinput
WHERE fielduserinput.userId = @userId

Any suggestions as to how I would write this in LINQ?开发者_运维知识库

Considering you have a datasource filled with data.

var matchingRows = from rows in fielduserinput.AsEnumarable()
                   where string.compare(rows["userId"].ToString(),userID)==0
                   select rows;

var result = from row in fielduserinput
             where row.userId = "???"
             select new { row.field_idField, row.userInput, ...};

var response = fielduserinput
               .Where(x=>x.userid == @userid)
               .Select(x=>new { field_idfieldid = x.field_idfieldid, etc })
               .ToList()