i can't find error hier

CompaniesCollection col=new CompaniesCollection();
 DataAccessAdapter adapter = new DataAccessAdapter();
adapter.FetchEntityCollection(col,null);
c1TrueDBGrid1.DataSource = adapter;

can anybody show me what is problem.

it worked first but after reopening project it generates error

c1TrueDBGrid1.DataSource = col;

no ,it displays error hier

adapter.FetchEntityCollection(comp,null);

excuse me adapter.FetchEntityCollection(col,null);

WIthout even knowing what the error is (and is it an exception? If so, what's the stacktrace?) we're pretty much in the dark what it might be. PLease provide more information.

Error 1 The best overloaded method match for 'SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.FetchEntityCollection( SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2, SD.LLBLGen.Pro.ORMSupportClasses.IRelationPredicateBucket)' has some invalid arguments C:\working model\Form2.cs 117 13 Docs Error 2 Argument '1': cannot convert from 'Docs.CollectionClasses.CompaniesCollection' to 'SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2' C:\working model\Form2.cs 117 43 Docs

I can't find somethin hier except this

Are using the SelfServicing model or the Adapter model?

I'm asking this because CompaniesCollection is generated when you use the SelfServicing model, while you are using the Adapter model functionality -> adapter.FetchEntityCollection.

i first created SelfServicing model second adapper third joined it together (i added only DatabaseSpecific from adapter)

I think i found my fault: i am not using collections of adapter i use collections of Self servicing that is why it didn't work