How to add reference to your project in c#?

Follow these steps:

1. Open Solution Explorer.
2. Right click your project name or right click "References" folder in your project.
3. Click on "Add Reference".
4. Reference Manager dialog box will appear.
5. Select any tab from left and select the reference.
6. If you have downloaded the dll file and want to add it in your project then click browse button and then select the location of file.
7. Click the Add button 
8. Reference will be added to your project.