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Editorial Team
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Asked: 2026-05-13T12:37:12+00:00

I’m building multi-project Application where some UserControl, the user control has a Entitymodel object

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I’m building multi-project Application where some UserControl, the user control has a Entitymodel object (myDBContainer db = new myDBContainer()), when i drop my user control on my a form i got the following designer error

The specified connectionis either not
found in the configuration, not
intended to be used with the
entityclient provider

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1 Answer

  1. Editorial Team

    Well, I found a solution for this but, I don’t know is it the optimum or not. I put the connection string in the app.config through Settings file, and change the named connection in the constructor for the EF model designer to read this connection as the following

    public InvDB() : base(Properties.Settings.Default.InvDB, "InvDB")

    but this solution, you’ve to make this change every time you open the EF designer, but it’s good for now.

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