Add constrain in updating data

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I have a gridview in which all the meetings are displayed with time slot.On clicking cell in gridview it redirect to update page on which user can update time slot.i want that if one user updating one cell then than cell can not be updated by other user.....how can i add such constrain on cell....

Posted 24-Nov-15 0:21am

Member 12141812

Updated 24-Nov-15 0:23am

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PANKAJMAURYA · Answer 1 · 2015-11-24T00:35:00

Add your updation code in transaction that automatically lock table while updating.

SQL

CREATE PROCEDURE [ProcedureName]
AS
BEGIN
  BEGIN TRANSACTION
  -- lock table "TableName" till end of transaction
  SELECT [ColumnNames]
  FROM [TableName]
  WITH (TABLOCK , HOLDLOCK)
  WHERE ...

  -- do some other stuff including insert/update table "TableName" 


  -- release lock
  COMMIT TRANSACTION
END

TABLOCK will prevent updates by other sessions,You can use TABLOCKX that prevent both updates and reads