ADO.NET :: Does Linq Dbml Need Refreshed After Allowing Cascade Deletes On Tables

Oct 20, 2010

When setting up my database, I forgot to set the delete rule to cascade on foreign keys. Now, I can't delete a user from the ASP.net control panel due to the FK constraints. So, I need to go through all my tables and allow cascade delete on all keys.Once I do this, will I need to redo my Linq .dbml? (ie: delete each table on it and drag it back on) or does it not matter?

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I have created a page with a gridview in asp.net that displays the records of a database table and allows users to delete checked records by clicking on a delete button. After I delete a record and I try to refresh the page from the browser (I am using mozilla)I get the follow message:

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ADO.NET :: LINQ To SQL - How Do You Join More Than 2 Tables

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I was trying to find out how I can join more than 2 tables using the LINQ-to-SQL syntax. For instance, joining 2 tables in SQL:

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I have T_articles to save the articles.

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[Code]....

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The main problem is that I recieve the following message:

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Using database with 3 tables and one of them is a many to many relationship. This database is used in relation with entity framework

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ADO.NET :: Linq To Sql Determine Which Tables To Write?

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I was wondering how Linq to Sql determines which tables to write to when given primary/foreign Key relationships. I can (hopefully) better explain using an example. I have the following tables:

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DataSource Controls :: How To Get Data From Two Tables In Linq

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I have no problem with running this query to find employees on a project:

[Code]....

Tring to do the reverse, finding projects that an employee worked on results in an error:

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[Code]....

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