public partial class UserColumnGrid
    {
        public int UserColumnGridID { get; set; }
        public int UserID { get; set; }
        public int ColumnGridID { get; set; }
        public int ColumnWidth { get; set; }
        public bool IsVisible { get; set; }

        public virtual ColumnGrid ColumnGrid { get; set; }
        public virtual User User { get; set; }
    }

dbContext.UserColumnGrid.Where(ucg => ucg.UserID == userID).ToList();

SELECT [Extent1].[UserColumnGridID]  AS [UserColumnGridID],
       [Extent1].[UserID]            AS [UserID],
       [Extent1].[ColumnGridID]      AS [ColumnGridID],
       [Extent1].[ColumnWidth]       AS [ColumnWidth],
       [Extent1].[IsVisible]         AS [IsVisible]
FROM   [dbo].[UserColumnGrid] AS [Extent1]
WHERE  ([Extent1].[UserID] = 1 /* @p__linq__0 */)
       AND (1 /* @p__linq__0 */ IS NOT NULL)