Filter Data From DataBase

Question

I want to Filter data from database using CheckboxList

 

i have four checkboxlist values like january,February,march and April 

 

here i want to filter data from database by clicking these checkboxlist in LINQ. 

 

here i can put 2 values or 3 values or 4 values means i want to retrieve( jan & april)data or (Feb & march & april)  like this.

 

How to do this??

 

Ex:-