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Unable to find connection…for object web.config

J01C0089 I’ve seen this error a couple of different times.  Mostly from other people calling me with the problem.  So I still don’t know what ultimately causes the problem.  But if you’re having this problem, here’s how you fix it.

First, a bit of background.

You’ll open a dataset you’ve been working with for months and see the following error message:

Unable to find connection [connectionName] (web.config)1 for object ‘Web.config’.  The connection string could not be found in application settings, or the data provider associated with the connection string could not be loaded.

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DataSets, ObjectDataSource and 3-Tier ASP.NET

As I’ve mentioned in other post, while I think LINQ has it’s uses, I still favor the use of the ObjectDataSource control in conjunction with DataSets and a 3-tiered architecture.  Since any future demos I do will probably involve this architecture, I thought it would be useful to do a short demo that demonstrates how to create a 3-Tiered architecture in ASP.NET.

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