Question

I have two tables with a foreign key constraint how can I delete rows from both of them in one transaction? linq to SQL seems to call my deletes in the wrong order. Is there somewhere I can check and make sure the constraint is recognized properly by linq to SQL??

 DataContext.OtherImages.DeleteOnSubmit(myOtherImage);
 DataContext.Images.DeleteOnSubmit(myImage);
 DataContext.SubmitChanges();

The Foreign key constraint is on OtherImages. Thanks!

Answer 1

You should have something like

[Association(
    Name="FK_OtherImages_Images",
    Storage="_OtherImages",
    OtherKey="ImageId",
    DeleteRule="NO ACTION")]
public EntitySet<OtherImage> OtherImages{
    ...
}

in your Image class.

DataContext.OtherImages.DeleteOnSubmit(myOtherImage);
DataContext.Images.DeleteOnSubmit(myImage);
DataContext.SubmitChanges();

should work fine. My guess is that you’re forgetting about another foreign key. You can see what query is being run by doing

DataContext.Log = Console.Out;

or something equivalent. I wouldn’t recommend cascading the deletes just to make this work since it should work without doing that.