LINQ to SQl updating primary key field?

Posted by Curtis White on Stack Overflow See other posts from Stack Overflow or by Curtis White
Published on 2010-04-05T19:12:37Z Indexed on 2010/04/05 20:43 UTC
Read the original article Hit count: 217

Filed under:

linq-to-sql

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primarykey

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invalidoperationexception

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guid

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.NET

I have a linq to sql table/class that uses a GUID as both a primary key and as foreign key. This problem came up when factoring some code that previously worked.

The exception generated is

"Operation is not valid due to the current state of the object."

The process I use is as such:

aspnet_User user() = new aspnet_User();
aspnet_user.childTable = new childTable();
.. set some properties
user.Insert() -> my custom method

... @ my custom method

using (mycontext dc = new context() ) 
{
user.childTable.ID = (Guid)myNewlyCreatedGuid;
}

The exception occurs on the assignment childTable.set_UserId().

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