How To Read Or Select Data Using Entity Framework In Visual Studio
First of all add Entity Framework to your solution as shown in the link.
How To Add Entity Framework In Visual Studio
For Reading the Data using Entity Framework follow the below code.

Here TechnomarkEntities is the instance of Entity Model.
Using enclosure do the automatic Connection Open and Close.
First of all create an instance of table that needs to be Read using Entity Framework.
Use linq query for selecting the data from table as shown below.
from c in obj.Test select c.
Assign the selected data to the instance of table.
By this way we can Read the data using Entity Framework.