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Editorial Team
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Asked: 2026-06-14T14:32:47+00:00

I’m beginning to work with EF 5 & Lightswitch in VS2012. I’m modeling a

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I’m beginning to work with EF 5 & Lightswitch in VS2012.

I’m modeling a database in EF 5 then creating the database and adding the new data-source to Lightswitch. I have a contact table that has an Email field which is type string in EF, and I know I can set the type for validation to Email Address in Lightswitch, but it doesn’t seem to want to let me. Here’s a picture of it:

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What can I do to set the type to Email Address?

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1 Answer

  1. Editorial Team

    The lack of “business types” (like Email Address, Image etc), is due to the extension that contains these types not being selected for the project. This extension is ticked by default, but sometimes people untick it, not knowing what it’s for.

    To fix this for your project:

    1. Right-click your LightSwitch project in Solution Explorer
    2. Select Properties
    3. Click on the Extensions tab
    4. Make sure that the extension called Microsoft LightSwitch Extensions is ticked

    You can help to insure that this doesn’t happen again with future projects, by ticking Use In New Projects as well.

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