In this article we are going to create custom Content Type using visual studio 2010.
Creating Empty SharePoint Project:
Open Visual Studio 2010.
Go to File => New => Project.
Select 2010 from the installed templates SharePoint and choose Empty SharePoint Project.
Name it as CustomContentType.
Enter the SharePoint server farm URL.
Select 'Deploy it as a Farm Solution".
Adding Content Type:
Right click the Solution Explorer and select Add a new item.
Select Content Type from the installed templates SharePoint and name it as CustomContentType.