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Update in Linq: System.Data.Linq.DuplicateKeyException: Cannot add an entity with a key that is already in use

Im making an c# asp.net webservice and using for my DAL layer LINQ. Im trying to make an update method and get this error: System.Data.Linq.DuplicateKeyException: Cannot add an entity with a key that is already in use. at System.Data.Linq.Table`1.Attach(TEntity entity, TEntity original) Here are the...

Posted to Data Access and ObjectDataSource Control (Forum) by khalidelmeknesi on 05-26-2009, 12:00 AM
Filed under: update, Error, Linq
LINQ BUGG, SQL 305 Error on SubmitChanges when inserting into table with XML data type

I am trying to do simple insert using LINQ to a table that has an XML Data Type column, column allows null, so I do not assign any value to this column Msg 305, Level 16, State 1, Line 2 The xml data type cannot be compared or sorted, except when using the IS NULL operator. here's the code: Dim newReqService...

Posted to Visual Basic .NET (Forum) by stasevich on 05-12-2008, 12:00 AM
Filed under: sql, error, linq
Re: Sequential Guids

By Default, the property "Auto Generated Value" is not set, changing this fixes your problem. More info can be found here .

Posted to SQL Server, SQL Server Express, and SqlDataSource Control (Forum) by Nick Kusters on 12-20-2007, 12:00 AM
Filed under: slq 2005, sql 2005, Sql 2005 .NET, SQL 2005 ASP.NET, SQL Server 2005, SQLServer, sqlserver 2005, ADO.NET, Database, Default value, error, error messages, insert, language, Microsoft SQL Server 2005, Database design, .NET SQL Server 2005, Primary Key, "SQL Server", .net 3.5, Linq, MSSQL, New ID, sql 2005 DBNull null value types, SQL 2005 Design

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Update in Linq: System.Data.Linq.DuplicateKeyException: Cannot add an entity with a key that is already in use

LINQ BUGG, SQL 305 Error on SubmitChanges when inserting into table with XML data type

Re: Sequential Guids