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August 25th, 2008

BUY Allegra ONLINE WITHOUT PRESCRIPTION, Here's hoping that this will help someone else.  I've been working on a project for the past few months using LINQ to SQL vs. a Legacy database (and I do mean "vs."), Allegra from canadian pharmacy. Order Allegra from United States pharmacy, Today I ran into updates on a particular table throwing IndexOutOfRangeExceptions.

All you're trying to do is update some instance generated from  a LTS table.  Instead, you get an IndexOutOfRangeException from deep within Linq, where can i find Allegra online, Buy Allegra from mexico, particularly "System.Data.Linq.IdentityManager.StandardIdentityManager". 

Here's what the context looks like:

image

"Views" is a table that maps SomeTypeID and SomeValueID into a ViewID.  (The table isn't actually named 'Views,' but the purpose is the same)  This ViewID is instrumental in working with "Elements, Allegra over the counter, Where to buy Allegra, " and we're trying to change the values of a particular Element and put it back into the database.

Some code:

var ctx = new ExampleDataContext();// get some element:var element = ctx.Elements.Where(e => e.ElementID == 1).First();// set some property:element.SomeOtherValue = false;// attempt to save -- FAILctx.SubmitChanges();

No Big Deal, right?  However executing this results in:

"System.IndexOutOfRangeException was unhandled
  Message="Index was outside the bounds of the array."
  Source="System.Data.Linq"
  StackTrace:
       at System.Data.Linq.IdentityManager.StandardIdentityManager.MultiKeyManager`3.TryCreateKeyFromValues(Object[] values, buy no prescription Allegra online, Allegra price, coupon, MultiKey`2& k)"  (etc etc etc)

 

The Solution:  I mentioned this was "legacy" database, right?  Take a look at the Views table again.  The database has SomeTypeID and SomeValueID as the primary keys of the table, Allegra for sale, Purchase Allegra, but we're treating ViewID as if it were a primary key - and apparently that's what Linq to SQL doesn't like.

So, buying Allegra online over the counter, Where can i buy Allegra online, changing the legacy database is out of the question for this particular project, however I can tell the Context how I want things to behave:

image

Remove the PrimaryKey=true attributes from SomeType and SomeValue, australia, uk, us, usa, Purchase Allegra online, and add that on the ViewID property, and now LinqToSql handles the association correctly.

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  • Naveen

    Hello,
    Thanks a lot, I hit the same problem and without this solution would have taken a lot of time to figure out the fix.

  • Abel

    This is a seriously great post. My expletive count was already creeping towards triple digits and this post saved the day.

  • http://instantdevelopment.blogspot.com/ Liam

    Really well explained post. I have had this problem several times and resolved it just as you have. It is a pity that you have to change the Linq model, which means that you have to remember to do it again if you regenerate the affected tables.

  • Joe

    Yea, that saved me. Thanks a lot. I had an old primary key on a related table which was wrong. You rock.

  • Lasse

    I had the same exception, but the above didn’t really help me. I had a function that did something very similar to your above code – and this function worked in some cases, but threw the IndexOutOfRangeException in others. I ended up using this approach instead:

    db.ExecuteCommand(“UPDATE TableName SET FieldName= @p0 WHERE IDField = @p1″, FldVal, ID);

    Not quite as elegant, but it works.

  • Vien Tri

    I also have the same problem. but i don’t have two colum as the primary keys. I don’t have solution for this problem. please help me.