Using EF “Code First” with an Existing Database : ASP Alliance

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Using EF “Code First” with an Existing Database

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by Scott Guthrie
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Article Contents:

Introduction
Using EF Code-First with an Existing Database
Step 1: Create a new ASP.NET Web Application Project
Step 2: Reference the EF Code First Assembly
Step 3: Northwind Database
Step 4: Create our Model Layer
POCO Model Classes
Nullable Columns
Association Properties and Lazy Loading
Step 5: Configuring our Database Connection String
Step 6: Using our Model Classes
Download Sample
Additional Code Examples
Summary
Resources

Step 2: Reference the EF Code First Assembly

Our next step will be to add a reference to the EF Code First library to our project. Right click on the “references” node within the Solution Explorer and choose “Add Reference”.

You’ll reference the “Microsoft.Data.Entity.Ctp.dll” assembly that is installed within the “\Program Files\Microsoft ADO.NET Entity Framework Feature CTP4\Binaries\” directory when you download and install the EF Code First library. After adding this reference you’ll see it show up in your project’s references window like below:

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