1，用nuget引用entityframework
2，添加配置文件：
<connectionStrings>
<add name="modelcontext" connectionString="Data Source=panqingqiang-PCSQL2008;Initial Catalog=QiangGe2014;Integrated Security=True" providerName="System.Data.SqlClient"/>
</connectionStrings>
3，设计实体：
public class Book
{
public int BookID { get; set; }
public string BookName { get; set; }
public string Author { get; set; }
public string Publisher { get; set; }
public decimal Price { get; set; }
public string Remark { get; set; }
}
4，设计访问数据库：
public class AppDbContext:DbContext
{
public AppDbContext():base("name=modelcontext"){}
public DbSet<Book> Books { get; set; }
}
5，下面来做一个测试：
main函数：
static void Main(string[] args)
{
Book book = new Book()
{
BookName = "C#高级编程333",
Price = 151.8M,
Publisher = "清华大学出版社",
Author = "Wrox",
};
AppDbContext dbContext = new AppDbContext();
dbContext.Books.Add(book);
int result=dbContext.SaveChanges();
Console.WriteLine(result);
var booksQuery = from b in dbContext.Books select b;
List<Book> booksList = booksQuery.ToList();
Console.WriteLine(booksList.Count());
}