C# method to lock SQL Server table

Question

I have a C# program that needs to perform a group of mass updates (20k+) to a SQL Server table. Since other users can update these records one at a time via an intranet website,

Answer 1

Try this: when you get records from you table (in the GetRecords() function?) use TABLOCKX hint:

    SELECT * FROM Table1 (TABLOCKX)

It will queue all other reads and updates outside your transaction until the transaction is either commited or rolled back.