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Editorial Team
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Asked: 2026-05-18T02:25:05+00:00

I’ve a text file containing record of a dump of database table in a

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I’ve a text file containing record of a dump of database table in a custom format, this text have a character in a specific position that identifies the operation with the record :

  • M = Insert or Update
  • D = Delete Record

Therefore if i find a D record in text file i need to delete record into database, instead if i find an M record i need to Insert the record if not exist in the database, if already exist i need to update it.

What is the better and fastest way to import a similar text file in a database table using .NET Framework and c#?
I have 300000 record of average in this text file.

Thanks

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1 Answer

  1. Editorial Team

    The easiest way is probably to use ADO.NET to create a typed datatable to load the data into and set the datarowstate accordingly, then flush the data via a DataAdapter.

    The fastest way is probably creating a bulk SQL-Script to execute. LinQ can save you a lot of time when selecting the data (you can probably transform it on the fly).

    There are also platform specific solutions that should be considered. See here a bulk insert for SQLServer.

    http://dotnetslackers.com/Community/blogs/xun/archive/2008/04/15/sql-bulk-insert-and-ado-net-sqlbulkcopy.aspx

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