Hi,Here i am demonstrating how to create primary key and foreign key in Database Using Code First Approach.

1. 1
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Hi,
In this article I am showing how to create primary key and foreign key association in Employee
and Department table .I have taken Dept_Id as the foreign key in Employee table .In my previous article
I have shown how to add Entity Frame work to visual C# please check it once before going through this
article .Here I am directly showing creation of primary key and foreign key association .You can
download Entity Framework.dll file from net and add it to Visual C#. The following are the steps to
create association between foreign key and primary key
Step 1: First create a console application and add it .Here I have named FK_PK_Association_Application.

2. 2
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 2: Now add a Department table.

3. 3
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 3: Declare variable and set the properties for Department Table.

4. 4
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 4: Add Employee Table.

5. 5
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 5: Declare variables of Employee Table and Set the properties .Also Declare Department Table as
Virtual.

6. 6
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 6: Add Entity Frame Work To FK_PK_Console Application. Add a reference to it as shown in
previous article named “Entity Framework Approach to Connect to MS SQL Server and Visual C#”.

7. 7
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 7: Add Context Class as shown.

8. 8
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 8: Now set the properties for Employee and Department Class in Context Class.

9. 9
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 9: Add Application Configuration File.

10. 10
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 10: Now declare the catalog or Database name and data source path of your SQL Server using
Connection string.

11. 11
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 11:
Create Object for Context Class, Employee Class, and Department Class and Initialize the
Database .A database initializer is a class that takes care of database creation and initialization
in a Code First application. It is the job of database initializer to create the database and
required tables based on the data model classes you create .Finally Add Employee Object to
Context.

12. 12
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 12: Press F5.Its Showing that DB has created successfully!!

13. 13
Creating Primary Key And Foreign Key Association in SQL Server 2008 Using
Visual C# 2010 and Entity Framework 5.0
Date:25.06.2013
Step 13: Login into SQL Server and Check .Finally Database named FK_PK_Association has been created
As shown in fig.
Thank You for Your Patience,
Article By:
Kiran Kumar Talikoti
Source Edge Software Pvt Ltd.