Help converting Stored Procedure to Linq

Looking for online help (Remote TeamViewer session) a Linq expert to convert a stored procedure into a Linq Query to perform a single EF query to the Database. Here is the original procedure: I dont have a sample Model - but basically, it will require updating 1 parent entity, 2 related child entities CREATE PROCEDURE [dbo].[CreateScanOutActivity] @SerNoIdTable IDTable READONLY, @StationId INTEGER, @PersonId INTEGER, @ActivityType INTEGER, @Duration_s INTEGER, @ActivityTime DATETIME, @TargetTime_s Decimal, @MRPCodeId INTEGER, @ScanningOUT BIT, @SequenceNumber INTEGER AS BEGIN CREATE TABLE #TempTable( ActivityID int); -- GET DATE DECLARE @TOD DATETIME; IF @ActivityTime IS NULL SET @TOD = CURRENT_TIMESTAMP; ELSE SET @TOD = @ActivityTime; DECLARE @SerNoID INTEGER; DECLARE @ActivityID INTEGER DECLARE @SerNoProcessActivityId INTEGER DECLARE SerNo_Cursor CURSOR FOR SELECT * FROM @SerNoIdTable OPEN SerNo_Cursor FETCH NEXT FROM SerNo_Cursor INTO @SerNoID WHILE @@FETCH_STATUS = 0 BEGIN -- FOR EACH SERIAL NUMBER -- Check if Activity exists SET @ActivityID = (SELECT TOP(1) ActivityID FROM Activity WHERE activitySernoIDFK = @SerNoID AND activityStationIDFK = @StationID AND activityTime = @ActivityTime AND activityUserIDFK = @PersonID AND activityType = @ActivityType AND (MRPCode = @MRPCodeId OR @MRPCodeId = NULL)); IF(@ActivityID IS NULL) BEGIN -- If Activity does NOT exist - Create it INSERT INTO Activity (activitySernoIDFK, activityStationIDFK, activityTime, activityUserIDFK, activityType, Duration_s, TargetTime_s, MRPCode) VALUES (@SerNoID, @StationID, @TOD, @PersonID, @ActivityType, @Duration_s, @TargetTime_s, @MRPCodeId); SET @ActivityID = SCOPE_IDENTITY(); -- Create SerNoProcessActivity SET @SerNoProcessActivityId = (SELECT TOP(1) SerNoProcessID FROM SerNoProcess snp JOIN SerNoRoute snr ON [login to view URL] = [login to view URL] WHERE [login to view URL] = @SerNoID AND [login to view URL] = 1 AND [login to view URL] = 0 AND [login to view URL] = @MRPCodeId AND [login to view URL] = @SequenceNumber); IF (@SerNoProcessActivityId IS NOT NULL) BEGIN INSERT INTO SerNoProcessActivity (ActivityID, SerNoProcessID) VALUES (@ActivityID, @SerNoProcessActivityId); END END -- SCAN OUT IF @ScanningOUT = 1 BEGIN UPDATE SerNos SET ScannedOutActivityID = @ActivityID WHERE SerNoID = @SerNoID; END INSERT INTO #TempTable (ActivityID) VALUES (@ActivityID) FETCH NEXT FROM SerNo_Cursor INTO @SerNoID; -- FOR EACH SERIAL NUMBER -- END END CLOSE SerNo_Cursor; DEALLOCATE SerNo_Cursor; SELECT * FROM #TempTable; DROP TABLE #TempTable; END GO