LinqToSQL: Not possible to update PrimaryKey?

Posted by Zuhaib on Stack Overflow See other posts from Stack Overflow or by Zuhaib
Published on 2010-03-24T14:10:16Z Indexed on 2010/03/24 14:13 UTC
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LINQ

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linq-to-sql

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c#

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update

I have a simple table (lets call it Table1) that has a NVARCHAR field as the PK. Table1 has no association with any other tables.

When I update Table1's PK column using LinqToSQL it fails. If I update other column it succeeds.

I could delete this row and insert new one in Table1, but I don't want to. There is a transaction table which has Table1's PK column as a column.

When the PK of Table1 is changed I want no effect in the transaction table. But when the row from Table1 is deleted, I want the transaction rows to be deleted. The cascading is done via Trigger.

As there is not association between these two tables, if I update the PK column of Table1 using normal SQL, it works and there is no effect on the transaction table as expected. When I delete the row the trigger deletes the rows from transaction table.

For this reason I can't delete and then add new row in Table1. So what can be done to successfully update the PrimaryKey of the Table1?

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