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Reusing the datatable instance created by default on bound controls

Posted on 2009-05-14
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Last Modified: 2012-05-07
This is more of a general question and am posting this after searching through the IDE generated code and not being able to find what I need!

I have a form with bound controls (combo boxes mostly). When I added them, the IDE automatically created the table adapters (whose creation instances I can see in the designer code) and on the form load event added code of the kind I've posted here.

My question is, while I can find the table adapter instances, I cannot locate the instances of the datatable themselves - I would prefer to reuse what's already been created for submitting my updates rather than create a new one.

Any help pls?

Thanks,
this.tblGroupsTableAdapter.Fill(this.dsSaphireOra.tblGroups);

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Question by:Ignis2
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6 Comments
 
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Expert Comment

by:CodeCruiser
ID: 24386493
You can see in the statement above that you have a Typed Dataset called dsSaphireOra and a Typed DataTable called tblGroups. Is that not what you are looking for?

http://thetonesofillusion.blogspot.com/2009/04/vb-net-typed-and-untyped-dataset.html
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Author Comment

by:Ignis2
ID: 24393461
Umm, no. I do have the typed datasets - I'm not sure where the instance of these is being created and just how the plain thing works is a bit confusing!
Because, if I want to use it, I usually do something like

tblGroups tbl = new dsSaphireOra.tblGroups();

And I cannot find the instance being created anywhere - does the IDE create  a default instance on running which is what is accessible from the this pointer?
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Expert Comment

by:CodeCruiser
ID: 24393558
If the above line is automatically added to the code then it means that its an instance. I am not sure if default instance concept applies here.
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Author Comment

by:Ignis2
ID: 24393799
Just to make things a little clearer, these are created when i bind the controls to the datatables. I can see instances of the table adapters being created :

tblGroupsTableAdapter = new dsSaphireOra.tblGroupsTableAdapter()

but can't find any reference to the datatables themselves. Any idea why? Am just trying to understand how this works, so I have better control over my code!
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Author Comment

by:Ignis2
ID: 24393802
the lines of code I'm talking about are in the form.designer.cs - generated by the IDE!
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CodeCruiser earned 200 total points
ID: 24393882
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